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Pang K, Ma J, Song X, Liu X, Zhang C, Gao Y, Li K, Liu Y, Peng Y, Xu Z, Gao C. Highly Flexible and Superelastic Graphene Nanofibrous Aerogels for Intelligent Sign Language. Small 2024:e2400415. [PMID: 38698600 DOI: 10.1002/smll.202400415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Indexed: 05/05/2024]
Abstract
Highly flexible and superelastic aerogels at large deformation have become urgent mechanical demands in practical uses, but both properties are usually exclusive. Here a trans-scale porosity design is proposed in graphene nanofibrous aerogels (GNFAs) to break the trade-off between high flexibility and superelasticity. The resulting GNFAs can completely recover after 1000 fatigue cycles at 60% folding strain, and notably maintain excellent structural integrity after 10000 cycles at 90% compressive strain, outperforming most of the reported aerogels. The mechanical robustness is demonstrated to be derived from the trans-scale porous structure, which is composed of hyperbolic micropores and porous nanofibers to enable the large elastic deformation capability. It is further revealed that flexible and superelastic GNFAs exhibit high sensitivity and ultrastability as an electrical sensors to detect tension and flexion deformation. As proof, The GNFA sensor is implemented onto a human finger and achieves the intelligent recognition of sign language with high accuracy by multi-layer artificial neural network. This study proposes a highly flexible and elastic graphene aerogel for wearable human-machine interfaces in sensor technology.
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Affiliation(s)
- Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Jingyu Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Xian Song
- Department of Sports Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Xiaoting Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Chengqi Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Yue Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Kaiwen Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
| | - Yuxin Peng
- Department of Sports Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
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Chen C, Song C, Liu B, Wang Y, Jia J, Pang K, Wang Y, Wang P. Activation of BMP4/SMAD pathway by HIF-1α in hypoxic environment promotes osteogenic differentiation of BMSCs and leads to ectopic bone formation. Tissue Cell 2024; 88:102376. [PMID: 38608407 DOI: 10.1016/j.tice.2024.102376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 03/15/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024]
Abstract
OBJECTIVE Heterotopic ossification (HO), also known as ossifying myositis, is a condition that produces abnormal bone and cartilage tissue in the soft tissues. Hypoxia inducible factor lα (HIF-lα) regulates the expression of various genes, which is closely related to the promotion of bone formation, and Drosophila mothers against decapentaplegic protein (SMAD) mediates the signal transduction in the Bone morphogenetic protein (BMP) signaling pathway, which affects the function of osteoblasts and osteoclasts, and thus plays a key role in the regulation of bone remodeling. We aimed to investigate the mechanism by which HIF-1α induces osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) in a hypoxic environment. METHODS A cellular hypoxia model was constructed to verify the expression of HIF-1α, while alizarin red staining was performed to observe the osteogenic differentiation ability of bone marrow mesenchymal stem cells (BMSCs). Alizarin red staining was used to analyze the late mineralization ability of the cells. Western blot analysis was performed to analyze the expression levels of osteogenesis-related factors OCN, OPN proteins as well as the pathway proteins BMP4, p-Smad1/5/8, and Smad1. We also constructed a rat model of ectopic bone formation, observed ectopic ossification by X-ray, and verified the success of the rat model by ELISA of HIF-1α. HE staining was used to observe the matrix and trabecular structure of bone, and Masson staining was used to observe the collagen and trabecular structure of bone. Immunohistochemistry analyzed the expression of OCN and OPN in ectopic bone tissues, and WB analyzed the expression of pathway proteins BMP4, p-Smad1/5/8 and Smad1 in ectopic bone tissues to verify the signaling pathway of ectopic bone formation. RESULTS Our results indicate that hypoxic environment upregulates HIF-1a expression and activates BMP4/SMAD signaling pathway. This led to an increase in ALP content and enhanced expression of the osteogenesis-related factors OCN and OPN, resulting in enhanced osteogenic differentiation of BMSCs. The results of our in vivo experiments showed that rats inoculated with BMSCs overexpressing HIF-1α showed bony structures in tendon tissues, enhanced expression of the bone signaling pathways BMP4 and p-Smad1/5/8, and enhanced expression levels of the osteogenic-related factors OCN and OPN, resulting in the formation of ectopic bone. CONCLUSIONS These data further suggest a novel mechanistic view that hypoxic bone marrow BMSCs activate the BMP4/SMAD pathway by up-regulating the expression level of HIF-1α, thereby promoting the secretion of osteogenic factors leading to ectopic bone formation.
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Affiliation(s)
- Cong Chen
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Chunhao Song
- Department of Medical Imaging, Weihai Wendeng District People Hospital, Weihai 264200, China
| | - Bo Liu
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Yitao Wang
- Department of Laboratory, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Jun Jia
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Kai Pang
- Department of Operations Management, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Yuanhao Wang
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China
| | - Peng Wang
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China.
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Wang P, Liu B, Song C, Jia J, Wang Y, Pang K, Wang Y, Chen C. Exosome MiR-21-5p Upregulated by HIF-1α Induces Adipose Stem Cell Differentiation to Promote Ectopic Bone Formation. Chem Biodivers 2024; 21:e202301972. [PMID: 38342761 DOI: 10.1002/cbdv.202301972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/29/2024] [Accepted: 02/07/2024] [Indexed: 02/13/2024]
Abstract
Heterotopic bone occurs after burns, trauma and major orthopedic surgery, which cannot be completely cured by current treatments. The development of new treatments requires more in-depth research into the mechanism of HO. Available evidence suggests that miR-21-5p plays an important role in bone formation. However, its mechanism in traumatic HO is still unclear. First, we identified exosomes extracted from L6 cells using TEM observation of the structure and western blotting detection of the surface marker CD63. Regulation effect of HIF-1α to miR-21-5p was confirmed by q-PCR assay. Then we co-cultured L6 cells with ASCs and performed alizarin red staining and ALP detection. Overexpression of miR-21-5p upregulated BMP4, p-smad1/5/8, OCN and OPN, which suggests the BMP4-smad signaling pathway may be involved in miR-21-5p regulation of osteogenic differentiation of ASCs. Finally in vivo experiments showed that miR-21-5p exosomes promoted ectopic formation in traumatized mice. This study confirms that HIF-1α could modulate miR-21-5p exosomes to promote post-traumatic ectopic bone formation by inducing ASCs cell differentiation. Our study reveals the mechanisms of miR-21-5p in ectopic ossification formation after trauma.
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Affiliation(s)
- Peng Wang
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Bo Liu
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Chunhao Song
- Department of Medical Imaging, Weihai Wendeng District People Hospital, Weihai, 264200, China
| | - Jun Jia
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Yuanhao Wang
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Kai Pang
- Department of Operations Management, Wehai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Yitao Wang
- Department of Laboratory, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
| | - Cong Chen
- Department of Spine Surgery, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, China
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Pang K, Liu Q, Zhu Y, Wei X. In vivo photoacoustic flow cytometry-based study of the effect of melanin content on melanoma metastasis. J Biophotonics 2024; 17:e202300405. [PMID: 38010214 DOI: 10.1002/jbio.202300405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/29/2023]
Abstract
A major cause of death in cancer patients is distant metastasis of tumors, in which circulating tumor cells (CTCs) are an important marker. Photoacoustic flow cytometry (PAFC) can monitor CTCs in real time, non-invasively, and label-free; we built a PAFC system and validated the feasibility of PAFC for monitoring CTCs using in vivo animal experiments. By cultivating heavily-pigmented and moderately-pigmented melanoma cells, more CTCs were detected in mice inoculated with moderately-pigmented tumor cells, resulting in more distant metastases and poorer survival status. Tumor cells with lower melanin content may produce more CTCs, increasing the risk of metastasis. CTC melanin content may be down-regulated during the metastatic which may be a potential indicator for assessing the risk of melanoma metastasis. In conclusion, PAFC can be used to assess the risk of melanoma metastasis by dynamically monitoring the number of CTCs and the CTC melanin content in future clinical diagnoses.
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Affiliation(s)
- Kai Pang
- School of Instrument Science and Opto Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Qi Liu
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yuxi Zhu
- School of Instrument Science and Opto Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Xunbin Wei
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute and Biomedical Engineering Department, Peking University, Beijing, China
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Su X, Jiang Z, Duan Y, Zhou H, Song H, Pang K, Liu C, Zou K, Zhang R, Song H, Hu N, Tur M, Willner AE. Adaptive-optics-based turbulence mitigation in a 400 Gbit/s free-space optical link by multiplexing Laguerre-Gaussian modes varying both radial and azimuthal spatial indices: publisher's note. Opt Lett 2024; 49:346. [PMID: 38194564 DOI: 10.1364/ol.516472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Indexed: 01/11/2024]
Abstract
This publisher's note contains a correction to Opt. Lett.48, 6452 (2023)10.1364/OL.506270.
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Ma J, Huo X, Yin J, Cai S, Pang K, Liu Y, Gao C, Xu Z. Axially Encoded Mechano-Metafiber Electronics by Local Strain Engineering. Adv Mater 2023; 35:e2305615. [PMID: 37821206 DOI: 10.1002/adma.202305615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/20/2023] [Indexed: 10/13/2023]
Abstract
Multimaterial integration, such as soft elastic and stiff components, exhibits rich deformation and functional behaviors to meet complex needs. Integrating multimaterials in the level of individual fiber is poised to maximize the functional design capacity of smart wearable electronic textiles, but remains unfulfilled. Here, this work continuously integrates stiff and soft elastic components into single fiber to fabricate encoded mechano-metafiber by programmable microfluidic sequence spinning (MSS). The sequences with programmable modulus feature the controllable localization of strain along metafiber length. The mechano-metafibers feature two essential nonlinear deformation modes, which are local strain amplification and retardation. This work extends the sequence-encoded metafiber into fiber networks to exhibit greatly enhanced strain amplification and retardation capability in cascades. Local strain engineering enables the design of highly sensitive strain sensors, stretchable fiber devices to protect brittle components and the fabrication of high-voltage supercapacitors as well as axial electroluminescent arrays. The approach allows the scalably design of multimaterial metafibers with programmable localized mechanical properties for woven metamaterials, smart textiles, and wearable electronics.
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Affiliation(s)
- Jingyu Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Xiaodan Huo
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310028, China
| | - Jun Yin
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310028, China
| | - Shengying Cai
- Center for Healthcare Materials, Shaoxing Institute, Zhejiang University, Shaoxing, 312000, China
| | - Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, P. R. China
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Zou K, Pang K, Song H, Karpov M, Su X, Zhang R, Song H, Zhou H, Kippenberg TJ, Tur M, Willner AE. Space-time wave packets with reduced divergence and tunable group velocity generated in free space after multi-mode fiber propagation. Opt Lett 2023; 48:5695-5698. [PMID: 37910736 DOI: 10.1364/ol.504531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/04/2023] [Indexed: 11/03/2023]
Abstract
Previously, space-time wave packets (STWPs) have been generated in free space with reduced diffraction and a tunable group velocity by combining multiple frequency comb lines each carrying a single Bessel mode with a unique wave number. It might be potentially desirable to propagate the STWP through fiber for reconfigurable positioning. However, fiber mode coupling might degrade the output STWP and distort its propagation characteristics. In this Letter, we experimentally demonstrate STWP generation and propagation over 1-m graded-index multi-mode fiber. Fiber mode coupling is mitigated by pre-distortion according to the inverse matrix of the fiber mode coupling matrix. Measurement of the STWP at the fiber output shows that its group velocity can vary from 1.0042c to 0.9967c by tuning the wave number of the Bessel mode on each frequency. The measured time-averaged intensity profiles show that the beam radius remains similar after 150-mm free-space propagation after exiting the fiber.
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Pang K, Yang Y, Tian D, Zeng N, Cao S, Ling S, Gao J, Zhao P, Wang H, Kong Y, Zhang J, Chen G, Deng W, Bai Z, Jin L, Wu G, Zhu D, Wang Y, Zhou J, Wu B, Lin G, Xiao Y, Gao Z, Ye Y, Wang X, Li A, Han J, Yao H, Yang Y, Zhang Z. Long-course chemoradiation plus concurrent/sequential PD-1 blockade as neoadjuvant treatment for MMR-status-unscreened locally advanced rectal cancer: protocol of a multicentre, phase 2, randomised controlled trial (the POLAR-STAR trial). BMJ Open 2023; 13:e069499. [PMID: 37699634 PMCID: PMC10503326 DOI: 10.1136/bmjopen-2022-069499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 07/26/2023] [Indexed: 09/14/2023] Open
Abstract
INTRODUCTION Recent preclinical studies have discovered unique synergism between radiotherapy and immune checkpoint inhibitors, which has already brought significant survival benefit in lung cancer. In locally advanced rectal cancer (LARC), neoadjuvant radiotherapy plus immune checkpoint inhibitors have also achieved surprisingly high pathological complete response (pCR) rates even in proficient mismatch-repair patients. As existing researches are all phase 2, single-cohort trials, we aim to conduct a randomised, controlled trial to further clarify the efficacy and safety of this novel combination therapy. METHODS AND ANALYSIS Eligible patients with LARC are randomised to three arms (two experiment arms, one control arm). Patients in all arms receive long-course radiotherapy plus concurrent capecitabine as neoadjuvant therapy, as well as radical surgery. Distinguishingly, patients in arm 1 also receive anti-PD-1 (Programmed Death 1) treatment starting at Day 8 of radiation (concurrent plan), and patients in arm 2 receive anti-PD-1 treatment starting 2 weeks after completion of radiation (sequential plan). Tislelizumab (anti-PD-1) is scheduled to be administered at 200 mg each time for three consecutive times, with 3-week intervals. Randomisation is stratified by different participating centres, with a block size of 6. The primary endpoint is pCR rate, and secondary endpoints include neoadjuvant-treatment-related adverse event rate, as well as disease-free and overall survival rates at 2, 3 and 5 years postoperation. Data will be analysed with an intention-to-treat approach. ETHICS AND DISSEMINATION This protocol has been approved by the institutional ethical committee of Beijing Friendship Hospital (the primary centre) with an identifying serial number of 2022-P2-050-01. Before publication to peer-reviewed journals, data of this research will be stored in a specially developed clinical trial database. TRIAL REGISTRATION NUMBER NCT05245474.
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Affiliation(s)
- Kai Pang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yun Yang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Dan Tian
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Na Zeng
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, Beijing, China
| | - Shun Cao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Shen Ling
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Jiale Gao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Pengfei Zhao
- Radiotherapy and Radiation Oncology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Hao Wang
- Statistics and Methodology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yuanyuan Kong
- Statistics and Methodology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Jie Zhang
- Radiology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Guangyong Chen
- Clinical Pathology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Wei Deng
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Zhigang Bai
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Lan Jin
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Guoju Wu
- Gastrointestinal Surgery, Beijing Hospital, Beijing, Beijing, China
| | - Danyang Zhu
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Yue Wang
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Jiaolin Zhou
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Bin Wu
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Guole Lin
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Yi Xiao
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Zhidong Gao
- Gastrointestinal Surgery, Peking University People's Hospital, Beijing, Beijing, China
| | - Yingjiang Ye
- Gastrointestinal Surgery, Peking University People's Hospital, Beijing, Beijing, China
| | - Xin Wang
- General Surgery, Peking University First Hospital, Beijing, Beijing, China
| | - Ang Li
- General Surgery, Xuanwu Hospital Capital Medical University, Beijing, Beijing, China
| | - Jiagang Han
- General Surgery, Beijing Chao-Yang Hospital Capital Medical University, Beijing, Beijing, China
| | - Hongwei Yao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yingchi Yang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Zhongtao Zhang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
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Zhang R, Zhang Y, Dong S, Pang K, Yang X, Wei X. Performance of indocyanine green in sentinel lymph node mapping and lymph node metastasis in penile cancer: systematic review, meta-analysis, and single-center experience. World J Urol 2023; 41:2319-2326. [PMID: 37419973 DOI: 10.1007/s00345-023-04485-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/07/2023] [Indexed: 07/09/2023] Open
Abstract
PURPOSE The aim of this study was to investigate the overall sensitivity and specificity of indocyanine green (ICG)-near-infrared (NIR) fluorescence imaging in the detection of sentinel lymph node metastasis (SLNM) in penile cancer. METHODS We searched PubMed, Embase, Web of Science, Scopus, and the Cochrane Library databases to identify manuscripts where ICG was intravenously administered prior to or during penile cancer surgery, with no restriction on language or publication status. The results extracted are presented as forest plots. RESULTS Seven studies were included in the analysis. The median sensitivity and specificity of ICG-NIR imaging for SLNM detection were 100 and 4%, respectively; the pooled sensitivity was 100.0% (95% confidence interval [CI] 97.0-100.0) and specificity was 2.0% (95% CI 1.0-3.0). There was no significant difference in the diagnostic results between different injection sites and doses in each experimental group. CONCLUSION To our knowledge, this meta-analysis is the first to summarize the diagnostic performance of ICG-NIR imaging for SLNM detection in penile cancer. ICG is sensitive in the imaging of SLN tissue, which can consequently improve the accuracy of lymph node detection. However, the specificity is very low.
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Affiliation(s)
- Rui Zhang
- Institute of Medical Technology, Peking University Health Science Center, Beijing, 100080, China
| | - Yaqin Zhang
- First Clinical Medical College, Nanjing Medical University, Nanjing, 210000, China
| | - Sihan Dong
- Institute of Medical Technology, Peking University Health Science Center, Beijing, 100080, China
| | - Kai Pang
- Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing, 100192, China
| | - Xiaofeng Yang
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Xunbin Wei
- Institute of Medical Technology, Peking University Health Science Center, Beijing, 100080, China.
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, Beijing, China.
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Pang K, Dong S, Zhu Y, Zhu X, Zhou Q, Gu B, Jin W, Zhang R, Fu Y, Yu B, Sun D, Duanmu Z, Wei X. Advanced flow cytometry for biomedical applications. J Biophotonics 2023; 16:e202300135. [PMID: 37263969 DOI: 10.1002/jbio.202300135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/03/2023]
Abstract
Flow cytometry (FC) is a versatile tool with excellent capabilities to detect and measure multiple characteristics of a population of cells or particles. Notable advancements in in vivo photoacoustic FC, coherent Raman FC, microfluidic FC, and so on, have been achieved in the last two decades, which endows FC with new functions and expands its applications in basic research and clinical practice. Advanced FC broadens the tools available to researchers to conduct research involving cancer detection, microbiology (COVID-19, HIV, bacteria, etc.), and nucleic acid analysis. This review presents an overall picture of advanced flow cytometers and provides not only a clear understanding of their mechanisms but also new insights into their practical applications. We identify the latest trends in this area and aim to raise awareness of advanced techniques of FC. We hope this review expands the applications of FC and accelerates its clinical translation.
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Affiliation(s)
- Kai Pang
- School of Instrument Science and Opto-Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Sihan Dong
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Yuxi Zhu
- School of Instrument Science and Opto-Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Xi Zhu
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Quanyu Zhou
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Bobo Gu
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Jin
- International Cancer Institute, Peking University, Beijing, China
| | - Rui Zhang
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Yuting Fu
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Bingchen Yu
- School of Instrument Science and Opto-Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Da Sun
- School of Instrument Science and Opto-Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Zheng Duanmu
- School of Instrument Science and Opto-Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Xunbin Wei
- International Cancer Institute, Peking University, Beijing, China
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11
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Zhang L, Peng L, Lu Y, Ming X, Sun Y, Xu X, Xia Y, Pang K, Fang W, Huang N, Xu Z, Ying Y, Liu Y, Fu Y, Gao C. Sub-second ultrafast yet programmable wet-chemical synthesis. Nat Commun 2023; 14:5015. [PMID: 37596259 PMCID: PMC10439120 DOI: 10.1038/s41467-023-40737-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 08/03/2023] [Indexed: 08/20/2023] Open
Abstract
Wet-chemical synthesis via heating bulk solution is powerful to obtain nanomaterials. However, it still suffers from limited reaction rate, controllability, and massive consumption of energy/reactants, particularly for the synthesis on specific substrates. Herein, we present an innovative wet-interfacial Joule heating (WIJH) approach to synthesize various nanomaterials in a sub-second ultrafast, programmable, and energy/reactant-saving manner. In the WIJH, Joule heat generated by the graphene film (GF) is confined at the substrate-solution interface. Accompanied by instantaneous evaporation of the solvent, the temperature is steeply improved and the precursors are concentrated, thereby synergistically accelerating and controlling the nucleation and growth of nanomaterials on the substrate. WIJH leads to a record high crystallization rate of HKUST-1 (~1.97 μm s-1), an ultralow energy cost (9.55 × 10-6 kWh cm-2) and low precursor concentrations, which are up to 5 orders of magnitude faster, -6 and -2 orders of magnitude lower than traditional methods, respectively. Moreover, WIJH could handily customize the products' amount, size, and morphology via programming the electrified procedures. The as-prepared HKUST-1/GF enables the Joule-heating-controllable and low-energy-required capture and liberation towards CO2. This study opens up a new methodology towards the superefficient synthesis of nanomaterials and solvent-involved Joule heating.
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Affiliation(s)
- Lin Zhang
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou, 310058, China
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yuanchao Lu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xin Ming
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yuxin Sun
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoyi Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yuxing Xia
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Wenzhang Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Ning Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, China
| | - Yibin Ying
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou, 310058, China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, China.
| | - Yingchun Fu
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou, 310058, China.
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, China.
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12
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Wei X, Cheng D, Shao C, Pang K, Xiao J, Zhang Y, Wu M, Zhang L, Ni P, Zhang F. A comparative study of pilomatricoma and epidermoid cyst with ultrasound. Clin Radiol 2023; 78:e582-e589. [PMID: 37183139 DOI: 10.1016/j.crad.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/09/2023] [Accepted: 04/19/2023] [Indexed: 05/16/2023]
Abstract
AIM To explore and compare the ultrasonic (US) features of pilomatricoma (PM) and epidermoid cyst (EC) in the differential diagnosis and improve the accuracy of US diagnosis of PM. MATERIALS AND METHODS Three hundred and nine patients who underwent US examination before surgery with a histopathological diagnosis of PM or EC after surgery were analysed retrospectively. The patients were categorised into the training and validation sets according to the inspection times. Univariate analysis was undertaken on the US and clinical features of PM and statistically significant variables (p<0.05) were included in the multivariate logistic regression model to establish a diagnostic model. RESULTS The results demonstrated that the multivariate logistic regression model for PM was statistically significant (p<0.001). The risk factors included posterior echo attenuation and hypoechoic halos (odds ratio [OR] = 9.277, 10.254) and the protective factors included age, diameter thickness, and posterior echo enhancement (OR=0.936, 0.302, 0.156). The performance of the diagnostic model was tested using the training set (area under the receiver operating characteristic curve [AUC] = 0.974, 95% confidence interval [CI] = 0.955-0.994) and the validation set (AUC = 0.967, 95% CI = 0.926-1.000), which demonstrated good discriminant ability. CONCLUSIONS The diagnostic accuracy for PM was higher than that for EC when the nodule is characterised by posterior echo attenuation, hypoechoic halos, smaller thickness, and younger age. The US diagnostic model developed may be used to guide the diagnosis of PM.
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Affiliation(s)
- X Wei
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - D Cheng
- Department of Radiology, Jinan Fourth People's Hospital, Jinan, Shandong, China
| | - C Shao
- Department of Evidence-Based Medicine, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - K Pang
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - J Xiao
- Department of Evidence-Based Medicine, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - Y Zhang
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - M Wu
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - L Zhang
- Department of Pathology, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - P Ni
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China
| | - F Zhang
- Department of Ultrasound, the Second Hospital of Shandong University, Jinan, Shandong, China.
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13
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Li X, Zhu Q, Pang K, Lang Z. Effective removal of Rhodamine B using the hydrothermal carbonization and citric acid modification of furfural industrial processing waste. Environ Technol 2023:1-12. [PMID: 37194688 DOI: 10.1080/09593330.2023.2215451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In this study, the removal of RhB from water by furfural residue (FR) biochar was prepared by hydrothermal carbonization (HTC) and citric acid (CA) modification and named this biochar as CHFR (C refers to citric acid, H refers to hydrothermal carbonization and FR is furfural residue). The CHFR were characterized by SEM, FT-IR and XPS, and CHFR was investigated by the effects of initial concentration, adsorbent dosage, pH, and contact time on the removal of RhB, and the experimental data were analyzed using the adsorption isotherm models, the adsorption kinetic models and thermodynamics, et al. The results showed that CHFR has strong adsorption performance, and the theoretical maximum adsorption capacity of RhB was 39.46 mg·g-1 under the reaction conditions of pH3, the dosage of 1.5 g·L-1, and 120 min contact time, with a removal efficiency close to 100%. the adsorption of RhB by CHFR is spontaneous and endothermic, which is consistent with the Freundlich adsorption, and the isotherm model fits well with the pseudo-second-order model, and the adsorption rate could still be as high as 92.74% after five regenerations, therefore, CHFR is an environmentally friendly and efficient adsorbent with excellent adsorption regeneration performance.
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Affiliation(s)
- Xiao Li
- Department of Chemistry, Chemical and Materials, Resource and Environment Major, Heilongjiang University, Harbin, Heilongjiang, China
| | - Qi Zhu
- Department of Chemistry, Chemical and Materials, Resource and Environment Major, Heilongjiang University, Harbin, Heilongjiang, China
| | - Kai Pang
- Department of Chemistry, Chemical and Materials, Resource and Environment Major, Heilongjiang University, Harbin, Heilongjiang, China
| | - Ze Lang
- Department of Chemistry, Chemical and Materials, Resource and Environment Major, Heilongjiang University, Harbin, Heilongjiang, China
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14
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Feng Z, Pang K, Tian M, Gu X, Lin H, Yang X, Yang Y, Zhang Z. Sarcobesity, but not visceral fat, is an independent risk factor for complications after radical resection of colorectal cancer. Front Nutr 2023; 10:1126127. [PMID: 37260520 PMCID: PMC10228740 DOI: 10.3389/fnut.2023.1126127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 04/10/2023] [Indexed: 06/02/2023] Open
Abstract
Background The influence of body composition on the outcome of colorectal cancer surgery is controversial. The aim of this study was to evaluate the effects of visceral obesity and sarcobesity on the incidence of total and surgical complications after radical resection of colorectal cancer. Methods We collected a total of 426 patients who underwent elective radical resection of colorectal cancer at Beijing Friendship Hospital, Capital Medical University from January 2017 to May 2018. According to the inclusion and exclusion criteria, 387 patients were finally included. A CT scan at the level of the L3-L4 intervertebral disk was selected to measure the values of visceral fat area and skeletal muscle area. Multivariate analysis was used to explore the independent risk/protective factors affecting postoperative complications. Results 128 (33.1%) patients developed complications, and 44 (11.4%) patients developed major complications. Among them, 111 patients developed surgical complications and 21 developed medical complications. Visceral fat area (Z = -3.271, p = 0.001), total fat area (Z = -2.613, p = 0.009), visceral fat area to subcutaneous fat area ratio (V/S, Z = -2.633, p = 0.008), and sarcobesity index (Z = -2.282, p = 0.023) were significantly associated with total complications. Visceral fat area (Z = -2.119, p = 0.034) and V/S (Z = -2.010, p = 0.044) were significantly associated with total surgical complications. Sarcobesity index, smoking, stoma, blood loss, surgery time, and American Society of Anesthesiology (ASA) score were selected as risk factors for total postoperative complications according to LASSO regression. Multivariate logistic regression analysis suggested that sarcobesity index was an independent risk factor for postoperative total complications and surgical complications. Subgroup analysis suggested that albumin level was an independent protective factor for postoperative total complications in male patients. Smoking, operative time, and sarcobesity index were independent risk factors, and cholesterol was an independent protective factor for total postoperative complications in female patients. Conclusion Increased sarcobesity index is an independent risk factor for postoperative complications in patients with colorectal cancer, while visceral fat area is not. For female patients, smoking, operation time, and obesity index are independent risk factors for postoperative complications, while cholesterol is an independent protective factor. For male patients, serum albumin is an independent protective factor for postoperative complications.
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15
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Zhao Q, Lian J, Pang K, Wang P, Ge R, Chu Y. Prognostic significance of JAM 3 in gastric cancer: An observational study from TCGA and GEO. Medicine (Baltimore) 2023; 102:e33603. [PMID: 37115068 PMCID: PMC10145878 DOI: 10.1097/md.0000000000033603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/23/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
Junctional adhesion molecule 3 (JAM3) can be used as a prognostic marker in multiple cancer types. However, the potential prognostic role of JAM3 in gastric cancer (GC) remains unclear. The purpose of this research was to gauge JAM3 expression and methylation as potential biomarkers for GC patient survival. Through bioinformatics research, we analyzed JAM3 expression, methylation, prognosis, and immune cell infiltrations. JAM3 methylation acts as a negative regulator of JAM3, leading to reduced expression of JAM3 in GC tissues relative to normal tissues. Patients with GC who expressed little JAM3 have a better chance of living a long time free of the disease, according to the Cancer Genome Atlas (TCGA) database. Through univariate and multivariate Cox regression analysis, inadequate JAM3 expression was labeled as an isolated indicator for overall survival (OS). The GSE84437 dataset was also used to confirm JAM3 prognostic role in GC, with consistent findings. A meta-analysis also found that low levels of JAM3 expression were significantly associated with longer OS. Finally, there was a strong correlation between JAM3 expression and a subset of immune cells. According to the TCGA database, low JAM3 expression could predict favorable OS and progression-free-survival (PFS) in GC patients (P < .05). The univariate and multivariate Cox regression demonstrated that low JAM3 expression was independent biomarker for OS (P < .05). Moreover, GSE84437 dataset was utilized to verify the prognostic role of JAM3 in GC, and the similar results were reached (P < .05). A meta-analysis revealed that low JAM3 expression was closely relevant to better OS. Finally, JAM3 expression exhibited a close correlation with some immune cells (P < .05). JAM3 might be a viable predictive biomarker and likely plays a crucial part in immune cell infiltration in individuals with GC.
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Affiliation(s)
- Qinfu Zhao
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Jiayu Lian
- Digestive Endoscopy Room, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Kai Pang
- Operation Management Section, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Ping Wang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Ruiyin Ge
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Yanliu Chu
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
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16
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Liu W, Jiang X, Yu Z, Pang K, Wang J, Peng Y. Effects of a Graphene Heating Device on Fatigue Recovery of Biceps Brachii. Bioengineering (Basel) 2023; 10:bioengineering10030381. [PMID: 36978772 PMCID: PMC10044709 DOI: 10.3390/bioengineering10030381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/05/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Far-infrared (FIR) is considered to be an ideal method to promote fatigue recovery due to its high permeability and strong radiation. In this paper, we report a flexible and wearable graphene heating device to help fatigue recovery of human exercise by using its high FIR divergence property. This study compares two different fatigue recovery methods, graphene far-infrared heating device hot application and natural recovery, over a 20 min recovery time among the male colleges' exhaustion exercise. Experimental results show that the achieved graphene device holds excellent electro-thermal radiation conversion efficiency of 70% and normal total emissivity of 89%. Moreover, the graphene FIR therapy in our work is more energy-efficient, easy to use, and wearable than traditional fatigue recovery methods. Such an anti-fatigue strategy offers new opportunities for enlarging potential applications of graphene film in body science, athletic training recovery, and wearable devices.
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Affiliation(s)
- Wenming Liu
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China
| | - Xiaohui Jiang
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China
| | - Zhiran Yu
- The MOF Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Kai Pang
- The MOF Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jian Wang
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China
| | - Yuxin Peng
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China
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17
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Hong F, Wang M, Dong B, Diao X, Zhang X, Pang K, Zhang Y, Hou D. Molecular Insight into the Pozzolanic Reaction of Metakaolin and Calcium Hydroxide. Langmuir 2023; 39:3601-3609. [PMID: 36848440 DOI: 10.1021/acs.langmuir.2c03115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The reaction mechanism of the pozzolanic reaction of metakaolin (MK) from the atomic point of view has not yet been explored. To explain the process and mechanism of the pozzolanic reaction from the atomic point of view, molecular insight into the pozzolanic reaction of MK and calcium hydroxide (CH) was analyzed through the reaction molecular dynamics (MD) simulation. The results show that the pozzolanic reaction of MK and CH can be essentially regarded as the CH decomposition and penetration into MK. Also, the structure evolution after the pozzolanic reaction shows that the water molecules cannot penetrate the MK structure till the participation of Ca2+ and OH- ions of CH. The Ca2+ and OH- ions have strong interaction with MK and drill into the MK structure, followed by the destruction of a part of the MK structure and water penetration. The final structure of CH removed by MK can be regarded as the precursor of the CASH gel structure.
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Affiliation(s)
- Fen Hong
- Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
| | - Muhan Wang
- Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
| | - Biqin Dong
- College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiaoxiang Diao
- Tianjin Housing Group Construction Engineering General Contraction Co., Ltd., Tianjin 300000, China
| | | | - Kai Pang
- China Construction Port Group Co., Ltd., Qingdao 266033, China
| | - Yongmin Zhang
- China Construction Port Group Co., Ltd., Qingdao 266033, China
| | - Dongshuai Hou
- Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
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18
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Yang KY, Shirpurkar C, White AD, Zang J, Chang L, Ashtiani F, Guidry MA, Lukin DM, Pericherla SV, Yang J, Kwon H, Lu J, Ahn GH, Van Gasse K, Jin Y, Yu SP, Briles TC, Stone JR, Carlson DR, Song H, Zou K, Zhou H, Pang K, Hao H, Trask L, Li M, Netherton A, Rechtman L, Stone JS, Skarda JL, Su L, Vercruysse D, MacLean JPW, Aghaeimeibodi S, Li MJ, Miller DAB, Marom DM, Willner AE, Bowers JE, Papp SB, Delfyett PJ, Aflatouni F, Vučković J. Multi-dimensional data transmission using inverse-designed silicon photonics and microcombs. Nat Commun 2022; 13:7862. [PMID: 36543782 PMCID: PMC9772188 DOI: 10.1038/s41467-022-35446-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
The use of optical interconnects has burgeoned as a promising technology that can address the limits of data transfer for future high-performance silicon chips. Recent pushes to enhance optical communication have focused on developing wavelength-division multiplexing technology, and new dimensions of data transfer will be paramount to fulfill the ever-growing need for speed. Here we demonstrate an integrated multi-dimensional communication scheme that combines wavelength- and mode- multiplexing on a silicon photonic circuit. Using foundry-compatible photonic inverse design and spectrally flattened microcombs, we demonstrate a 1.12-Tb/s natively error-free data transmission throughout a silicon nanophotonic waveguide. Furthermore, we implement inverse-designed surface-normal couplers to enable multimode optical transmission between separate silicon chips throughout a multimode-matched fibre. All the inverse-designed devices comply with the process design rules for standard silicon photonic foundries. Our approach is inherently scalable to a multiplicative enhancement over the state of the art silicon photonic transmitters.
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Affiliation(s)
- Ki Youl Yang
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA ,grid.38142.3c000000041936754XJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA USA
| | - Chinmay Shirpurkar
- grid.170430.10000 0001 2159 2859The College of Optics and Photonics, University of Central Florida, Orlando, FL USA
| | - Alexander D. White
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Jizhao Zang
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA ,grid.266190.a0000000096214564Department of Physics, University of Colorado, Boulder, CO USA
| | - Lin Chang
- grid.133342.40000 0004 1936 9676Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA USA
| | - Farshid Ashtiani
- grid.25879.310000 0004 1936 8972Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA USA
| | - Melissa A. Guidry
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Daniil M. Lukin
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Srinivas V. Pericherla
- grid.170430.10000 0001 2159 2859The College of Optics and Photonics, University of Central Florida, Orlando, FL USA
| | - Joshua Yang
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Hyounghan Kwon
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Jesse Lu
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA ,SPINS Photonics Inc, Hollister, CA USA
| | - Geun Ho Ahn
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Kasper Van Gasse
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Yan Jin
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA ,grid.266190.a0000000096214564Department of Physics, University of Colorado, Boulder, CO USA
| | - Su-Peng Yu
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA ,grid.266190.a0000000096214564Department of Physics, University of Colorado, Boulder, CO USA
| | - Travis C. Briles
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA
| | - Jordan R. Stone
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA
| | - David R. Carlson
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA ,Octave Photonics, Louisville, CO USA
| | - Hao Song
- grid.42505.360000 0001 2156 6853Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA USA
| | - Kaiheng Zou
- grid.42505.360000 0001 2156 6853Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA USA
| | - Huibin Zhou
- grid.42505.360000 0001 2156 6853Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA USA
| | - Kai Pang
- grid.42505.360000 0001 2156 6853Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA USA
| | - Han Hao
- grid.25879.310000 0004 1936 8972Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA USA
| | - Lawrence Trask
- grid.170430.10000 0001 2159 2859The College of Optics and Photonics, University of Central Florida, Orlando, FL USA
| | - Mingxiao Li
- grid.133342.40000 0004 1936 9676Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA USA
| | - Andy Netherton
- grid.133342.40000 0004 1936 9676Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA USA
| | - Lior Rechtman
- grid.9619.70000 0004 1937 0538Applied Physics Department, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Jinhee L. Skarda
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Logan Su
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Dries Vercruysse
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | | | - Shahriar Aghaeimeibodi
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Ming-Jun Li
- grid.417796.aCorning Incorporated, Corning, NY USA
| | - David A. B. Miller
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA
| | - Dan M. Marom
- grid.9619.70000 0004 1937 0538Applied Physics Department, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - John E. Bowers
- grid.133342.40000 0004 1936 9676Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA USA
| | - Scott B. Papp
- grid.94225.38000000012158463XTime and Frequency Division, National Institute of Standards and Technology, Boulder, CO USA ,grid.266190.a0000000096214564Department of Physics, University of Colorado, Boulder, CO USA
| | - Peter J. Delfyett
- grid.170430.10000 0001 2159 2859The College of Optics and Photonics, University of Central Florida, Orlando, FL USA
| | - Firooz Aflatouni
- grid.25879.310000 0004 1936 8972Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA USA
| | - Jelena Vučković
- grid.168010.e0000000419368956E.L.Ginzton Laboratory, Stanford University, Stanford, CA USA ,SPINS Photonics Inc, Hollister, CA USA
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19
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Zou K, Pang K, Song H, Fan J, Zhao Z, Song H, Zhang R, Zhou H, Minoofar A, Liu C, Su X, Hu N, McClung A, Torfeh M, Arbabi A, Tur M, Willner AE. High-capacity free-space optical communications using wavelength- and mode-division-multiplexing in the mid-infrared region. Nat Commun 2022; 13:7662. [PMID: 36496483 PMCID: PMC9741622 DOI: 10.1038/s41467-022-35327-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
Due to its absorption properties in atmosphere, the mid-infrared (mid-IR) region has gained interest for its potential to provide high data capacity in free-space optical (FSO) communications. Here, we experimentally demonstrate wavelength-division-multiplexing (WDM) and mode-division-multiplexing (MDM) in a ~0.5 m mid-IR FSO link. We multiplex three ~3.4 μm wavelengths (3.396 μm, 3.397 μm, and 3.398 μm) on a single polarization, with each wavelength carrying two orbital-angular-momentum (OAM) beams. As each beam carries 50-Gbit/s quadrature-phase-shift-keying data, a total capacity of 300 Gbit/s is achieved. The WDM channels are generated and detected in the near-IR (C-band). They are converted to mid-IR and converted back to C-band through the difference frequency generation nonlinear processes. We estimate that the system penalties at a bit error rate near the forward error correction threshold include the following: (i) the wavelength conversions induce ~2 dB optical signal-to-noise ratio (OSNR) penalty, (ii) WDM induces ~1 dB OSNR penalty, and (iii) MDM induces ~0.5 dB OSNR penalty. These results show the potential of using multiplexing to achieve a ~30X increase in data capacity for a mid-IR FSO link.
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Affiliation(s)
- Kaiheng Zou
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Kai Pang
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Hao Song
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Jintao Fan
- grid.33763.320000 0004 1761 2484Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, 300072 Tianjin, China
| | - Zhe Zhao
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Haoqian Song
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Runzhou Zhang
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Huibin Zhou
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Amir Minoofar
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Cong Liu
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Xinzhou Su
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Nanzhe Hu
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Andrew McClung
- grid.266683.f0000 0001 2166 5835Department of Electrical and Computer Engineering, University of Massachusetts Amherst, Amherst, MA 01003 USA
| | - Mahsa Torfeh
- grid.266683.f0000 0001 2166 5835Department of Electrical and Computer Engineering, University of Massachusetts Amherst, Amherst, MA 01003 USA
| | - Amir Arbabi
- grid.266683.f0000 0001 2166 5835Department of Electrical and Computer Engineering, University of Massachusetts Amherst, Amherst, MA 01003 USA
| | - Moshe Tur
- grid.12136.370000 0004 1937 0546School of Electrical Engineering, Tel Aviv University, Ramat Aviv, 69978 Israel
| | - Alan E. Willner
- grid.42505.360000 0001 2156 6853Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 USA ,grid.42505.360000 0001 2156 6853Dornsife Department of Physics & Astronomy, University of Southern California, Los Angeles, CA 90089 USA
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20
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Minoofar A, Zou K, Pang K, Song H, Karpov M, Yessenov M, Zhao Z, Song H, Zhou H, Su X, Kippenberg TJ, Abouraddy AF, Tur M, Willner AE. Generation of OAM-carrying space-time wave packets with time-dependent beam radii using a coherent combination of multiple LG modes on multiple frequencies. Opt Express 2022; 30:45267-45278. [PMID: 36522933 DOI: 10.1364/oe.472745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
Space-time (ST) wave packets, in which spatial and temporal characteristics are coupled, have gained attention due to their unique propagation characteristics, such as propagation invariance and tunable group velocity in addition to their potential ability to carry orbital angular momentum (OAM). Through experiment and simulation, we explore the generation of OAM-carrying ST wave packets, with the unique property of a time-dependent beam radius at various ranges of propagation distances. To achieve this, we synthesize multiple frequency comb lines, each assigned to a coherent combination of multiple Laguerre-Gaussian (LGℓ,p) modes with the same azimuthal index but different radial indices. The time-dependent interference among the spatial modes at the different frequencies leads to the generation of the desired OAM-carrying ST wave packet with dynamically varying radii. The simulation results indicate that the dynamic range of beam radius oscillations increases with the number of modes and frequency lines. The simulated ST wave packet for OAM of orders +1 or +3 has an OAM purity of >95%. In addition, we experimentally generate and measure the OAM-carrying ST wave packets with time-dependent beam radii. In the experiment, several lines of a Kerr frequency comb are spatially modulated with the superposition of multiple LG modes and combined to generate such an ST wave packet. In the experiment, ST wave packets for OAM of orders +1 or +3 have an OAM purity of >64%. In simulation and experiment, OAM purity decreases and beam radius becomes larger over the propagation.
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21
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Zhao Q, Dong L, Liang H, Pang K, Wang P, Ge R, Li T, Jiang S, Chu Y. Evaluation of multiple biological indicators for combined diagnosis of gastric cancer: A retrospective analysis. Medicine (Baltimore) 2022; 101:e31904. [PMID: 36451446 PMCID: PMC9704904 DOI: 10.1097/md.0000000000031878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
To assess carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), platelet distribution width (PDW), neutrophil-to-lymphocyte ratio (NLR), and platelet-lymphocyte ratio (PLR) for gastric cancer's (GC) diagnostic efficiency, and the use of receiver operating characteristic curves (ROC) combined with logistic regression to evaluate multi-index combination's diagnostic value of GC. 773 GC patients' clinical data were retrospectively collected in the Weihai Municipal Hospital, affiliated hospital of Shandong University from April 2018 to May 2021, and selected 2368 healthy physical examination patients during the same period as the control group. A total of 3141 samples was included in this study, including 773 cases in the GC group and 2368 cases in the healthy physical examination group. The results of the overall comparison between groups showed that apart from gender, the age differences, CEA, CA19-9, PDW, NLR, and PLR were statistically significant (P < .001). Spearman ranks correlation analysis's results showed that CA19-9, CEA, PLR, and NLR were correlated with GC patients' clinical-stage positively, and the correlation coefficients r was 0.249, 0.280, 0.252, 0.262 (all P < .001), and PDW was correlated with the clinical stage negatively (r = -0.186, P < .001). The ROC curve analysis results of CEA, CA19-9, PDW, NLR and PLR showed that CEA's diagnostic cutoff value for GC was 3.175 (area under the curve [AUC] = 0.631, 95% CI: 0.606-0.655, P < .001), the CA19-9's diagnostic cutoff value is 19.640 (AUC = 0.589, 95% CI: 0.563-0.615, P < .001), PDW's diagnostic cutoff value is 15.750 (AUC = 0.799, 95% CI: 0.778-0.820, P < .001), NLR's diagnostic cutoff value was 2.162 (AUC = 0.699, 95% CI: 0.675-0.721, P < .001), and PLR's diagnostic cutoff value was 149.540 (AUC = 0.709, 95% CI: 0.688-0.732, P < .001). The area under the ROC curve for the combined diagnosis of GC with 5 indicators was 0.877 (95% CI: 0.860-0.894, P < .001), which was better than a single indicator (P < .05). The diagnostic efficiency of combined detection of CEA, CA19-9, PDW, NLR, and PLR is better than that of single index detection alone, which can reduce the misdiagnosis rate of GC effectively.
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Affiliation(s)
- Qinfu Zhao
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Luying Dong
- Department of Physical Examination, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Heye Liang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Kai Pang
- Operation Management Section, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Ping Wang
- Operation Management Section, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Ruiyin Ge
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Tian Li
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Shuyi Jiang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Yanliu Chu
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
- * Correspondence: Yanliu Chu, Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, China (e-mail:)
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22
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Zou K, Su X, Yessenov M, Pang K, Karapetyan N, Karpov M, Song H, Zhang R, Zhou H, Kippenberg TJ, Tur M, Abouraddy AF, Willner AE. Tunability of space-time wave packet carrying tunable and dynamically changing OAM value. Opt Lett 2022; 47:5751-5754. [PMID: 37219320 DOI: 10.1364/ol.472363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/10/2022] [Indexed: 05/24/2023]
Abstract
Space-time (ST) wave packets have gained much interest due to their dynamic optical properties. Such wave packets can be generated by synthesizing frequency comb lines, each having multiple complex-weighted spatial modes, to carry dynamically changing orbital angular momentum (OAM) values. Here, we investigate the tunability of such ST wave packets by varying the number of frequency comb lines and the combinations of spatial modes on each frequency. We experimentally generate and measure the wave packets with tunable OAM values from +1 to +6 or from +1 to +4 during a ∼5.2-ps period. We also investigate, in simulation, the temporal pulse width of the ST wave packet and the nonlinear variation of the OAM values. The simulation results show that: (i) a pulse width can be narrower for the ST wave packet carrying dynamically changing OAM values using more frequency lines; and (ii) the nonlinearly varying OAM value can result in different frequency chirps along the azimuthal direction at different time instants.
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23
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Song H, Zhang R, Zhou H, Su X, Zou K, Duan Y, Karapetyan N, Song H, Pang K, Hu N, Minoofar A, Tur M, Willner AE. Turbulence-resilient pilot-assisted self-coherent free-space optical communications using a photodetector array for bandwidth enhancement. Opt Lett 2022; 47:5723-5726. [PMID: 37219313 DOI: 10.1364/ol.474149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/07/2022] [Indexed: 05/24/2023]
Abstract
We experimentally demonstrate a 4-Gbit/s 16-QAM pilot-assisted, self-coherent, and turbulence-resilient free-space optical link using a photodetector (PD) array. The turbulence resilience is enabled by the efficient optoelectronic mixing of the data and pilot beams in a free-space-coupled receiver, which can automatically compensate for turbulence-induced modal coupling to recover the data's amplitude and phase. For this approach, a sufficient PD area might be needed to collect the beams while the bandwidth of a single larger PD could be limited. In this work, we use an array of smaller PDs instead of a single larger PD to overcome the beam collection and bandwidth response trade-off. In the PD-array-based receiver, the data and pilot beams are efficiently mixed in the aggregated PD area formed by four PDs, and the four mixing outputs are electrically combined for data recovery. The results show that: (i) either with or without turbulence effects (D/r0 = ∼8.4), the 1-Gbaud 16-QAM signal recovered by the PD array has a lower error vector magnitude than that of a single larger PD; (ii) for 100 turbulence realizations, the pilot-assisted PD-array receiver recovers 1-Gbaud 16-QAM data with a bit-error rate below 7% of the forward error correction limit; and (iii) for 1000 turbulence realizations, the average electrical mixing power loss of a single smaller PD, a single larger PD, and a PD array is ∼5.5 dB, ∼1.2 dB, and ∼1.6 dB, respectively.
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24
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Pang K, Yang Y, Zhao P, Wu G, Li J, Gao J, Yao H, Yang Y, Zhang Z. Adding immune checkpoint blockade to neoadjuvant chemoradiation in locally advanced rectal cancer. Br J Surg 2022; 109:1178-1179. [DOI: 10.1093/bjs/znac298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 07/31/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Kai Pang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Yun Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Pengfei Zhao
- Department of Radiation Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Guocong Wu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Jun Li
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Jiale Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Hongwei Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Yingchi Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
| | - Zhongtao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre for Digestive Diseases , Beijing , China
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25
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Liu X, Pang K, Qin H, Liu Y, Liu Y, Gao C, Xu Z. Hyperbolic Graphene Framework with Optimum Efficiency for Conductive Composites. ACS Nano 2022; 16:14703-14712. [PMID: 36001475 DOI: 10.1021/acsnano.2c05414] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Constructing conductive filler networks with high efficiency is essential to fabricating functional polymer composites. Although two-dimensional (2D) sheets have prevailed in nanocomposites, their efficiency in enhancing conductive functions seems to reach a limit, as if merely addressing the dispersion homogeneity. Here, we exploit the unrecognized geometric curvature of 2D sheets to break the efficiency limit of filler systems. We introduce the hyperbolic curvature concept to mediate the incompatibility between 2D planar topology and 3D filler space and hold the efficient conductive path through face-to-face contact. The hyperbolic graphene framework exhibits a record efficiency in enhancing electrically and thermally conductive functions of nanocomposites. At a volume loading of only 1.6%, the thermal and electrical conductivities reach 31.6 W/(mK) and 13 911 S/m, respectively. We demonstrate that the conductive nanocomposites with a hyperbolic graphene aerogel framework are useful for thermal management, sensing, and electromagnetic shielding. Our work provides a solution to reconcile the incompatibility between the 2D planar structure of sheets and the highly expected 3D conductive path, presenting a geometrically optimal filler system to break the efficiency limit of multifunctional nanocomposites and broaden the structural design space of 2D sheets by curvature modulation to meet more applications.
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Affiliation(s)
- Xiaoting Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Huasong Qin
- Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yilun Liu
- Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
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26
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Yang Y, Pang K, Zhang Z. 447TiP Neoadjuvant long-course chemoradiation plus tislelizumab (anti-PD1) for MMR-status-unscreened locally advanced rectal cancer: Study protocol for a phase II, 3-arm, randomized trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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27
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Pang K, Zhang X, Zong L, Yang H, Zhang T, Duan Y, Zhang J. Tuning liquid aggregation of zwitterionic chitin nanocrystals by graphene oxide planar catchers via electrostatic regulation. J Colloid Interface Sci 2022; 628:566-572. [PMID: 36007421 DOI: 10.1016/j.jcis.2022.08.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/14/2022] [Accepted: 08/15/2022] [Indexed: 11/27/2022]
Abstract
As important structural units, biomass nanomaterials have exhibited great potentials to construct high-performance macroscopic materials for broad applications by liquid assembly. However, the liquid aggregation of nanomaterials was less investigated. Here, we demonstrate that the one-dimensional (1D) zwitterionic chitin nanocrystals (ZChNCs) can be reversibly captured and released by two-dimensional (2D) planar catchers of graphene oxide (GO) sheets. The dominant electrostatic regulation strategy by pH variation drives that there are three reversible changes for the liquid aggregation of ZChNCs and GO, which were the isolated dispersion state (pH > 7), homogeneous hybridization state (7 ≥ pH ≥ 5), and partially stacked hybridization state (pH < 5), respectively. We found there are no sedimentation during the change of liquid aggregation with the higher absolute Zeta potentials (almost>30 mV). Moreover, the ZChNCs-GO nanohybrids have reached a maximum Zeta potential up to -80 mV, which can be explained by the ionization of excess carboxyl groups on the surface of ZChNCs. Besides, the electrostatic regulation endows the nanohybrids with rheological behavior, which is beneficial to the macro assembly of liquid nanomaterials. This work provides a new class of hybrid colloidal nanomaterials, opens the structural design dimension of macro assembly and holds great potentials in high-performance biodegradable material.
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Affiliation(s)
- Kai Pang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China
| | - Xiaofang Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China
| | - Lu Zong
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hongsheng Yang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China.
| | - Tongping Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China
| | - Yongxin Duan
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China
| | - Jianming Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial, Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao266042, China
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28
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Pang K, Ma L, Bai H, Yi X. Dynamic event-based finite-horizon H ∞ secure consensus control of a class of nonlinear multi-agent systems. ISA Trans 2022; 127:168-177. [PMID: 34998520 DOI: 10.1016/j.isatra.2021.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/07/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
In this paper, we investigate the H∞ consensus control issue for nonlinear multi-agent systems (MASs) subject to multiple attacks over a finite time interval. A novel and comprehensive model to characterize the multiple attacks is presented that includes denial-of-service (DoS) attacks, scaling attacks and replay attacks. With the hope of easing the communication burdens, we implement a dynamic event-triggered scheme to schedule the process of data sharing among the individual subsystems, which helps judge if the collected data should be shared to neighboring agents for control input update. The aim of the proposed problem is to develop an output feedback strategy to meet the desired H∞ consensus performance despite the existence of multiple attacks. Some conditions are presented for the solvability of the investigated problem, and the feedback gains are obtained via certain convex optimization algorithms. The proposed theoretical result is finally demonstrated by virtue of two illustrative simulation examples.
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Affiliation(s)
- Kai Pang
- School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Lifeng Ma
- School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Hongyang Bai
- School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaojian Yi
- School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
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Hu N, Song H, Zhang R, Zhou H, Liu C, Su X, Song H, Pang K, Zou K, Lynn B, Tur M, Willner AE. Demonstration of turbulence mitigation in a 200-Gbit/s orbital-angular-momentum multiplexed free-space optical link using simple power measurements for determining the modal crosstalk matrix. Opt Lett 2022; 47:3539-3542. [PMID: 35838722 DOI: 10.1364/ol.464217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
We experimentally demonstrate turbulence mitigation in a 200-Gbit/s quadrature phase-shift keying (QPSK) orbital-angular-momentum (OAM) mode-multiplexed system using simple power measurements for determining the modal coupling matrix. To probe and mitigate turbulence, we perform the following: (i) sequentially transmit multiple probe beams at 1550-nm wavelength each with a different combination of Laguerre-Gaussian (LG) modes; (ii) detect the power coupling of each probe beam to LG0,0 for determining the complex modal coupling matrix; (iii) calculate the conjugate phase of turbulence-induced spatial phase distortion; (iv) apply this conjugate phase to a spatial light modulator (SLM) at the receiver to mitigate the turbulence distortion for the 1552-nm mode-multiplexed data-carrying beams. The probe wavelength is close enough to the data wavelength such that it experiences similar turbulence, but is far enough away such that the probe beams do not affect the data beams and can all operate simultaneously. Our experimental results show that with our turbulence mitigation approach the following occur: (a) the inter-channel crosstalk is reduced by ∼25 and ∼21 dB for OAM +1 and -2 channels, respectively; (b) the optical signal-to-noise ratio (OSNR) penalty is <1 dB for both OAM channels for a bit error rate (BER) at the 7% forward error correction (FEC) limit, compared with the no turbulence case.
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Zhou H, Su X, Minoofar A, Zhang R, Zou K, Song H, Pang K, Song H, Hu N, Zhao Z, Almaiman A, Zach S, Tur M, Molisch AF, Sasaki H, Lee D, Willner AE. Utilizing multiplexing of structured THz beams carrying orbital-angular-momentum for high-capacity communications. Opt Express 2022; 30:25418-25432. [PMID: 36237073 DOI: 10.1364/oe.459720] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/17/2022] [Indexed: 06/16/2023]
Abstract
Structured electromagnetic (EM) waves have been explored in various frequency regimes to enhance the capacity of communication systems by multiplexing multiple co-propagating beams with mutually orthogonal spatial modal structures (i.e., mode-division multiplexing). Such structured EM waves include beams carrying orbital angular momentum (OAM). An area of increased recent interest is the use of terahertz (THz) beams for free-space communications, which tends to have: (a) larger bandwidth and lower beam divergence than millimeter-waves, and (b) lower interaction with matter conditions than optical waves. Here, we explore the multiplexing of THz OAM beams for high-capacity communications. Specifically, we experimentally demonstrate communication systems with two multiplexed THz OAM beams at a carrier frequency of 0.3 THz. We achieve a 60-Gbit/s quadrature-phase-shift-keying (QPSK) and a 24-Gbit/s 16 quadrature amplitude modulation (16-QAM) data transmission with bit-error rates below 3.8 × 10-3. In addition, to show the compatibility of different multiplexing approaches (e.g., polarization-, frequency-, and mode-division multiplexing), we demonstrate an 80-Gbit/s QPSK THz communication link by multiplexing 8 data channels at 2 polarizations, 2 frequencies, and 2 OAM modes.
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31
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Li D, Zhu B, Pang K, Zhang Q, Qu M, Liu W, Fu Y, Xie J. Virtual Sensor Array Based on Piezoelectric Cantilever Resonator for Identification of Volatile Organic Compounds. ACS Sens 2022; 7:1555-1563. [PMID: 35549157 DOI: 10.1021/acssensors.2c00442] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Piezoelectric cantilever resonator is one of the most promising platforms for real-time sensing of volatile organic compounds (VOCs). However, it has been a great challenge to eliminate the cross-sensitivity of various VOCs for these cantilever-based VOC sensors. Herein, a virtual sensor array (VSA) is proposed on the basis of a sensing layer of GO film deposited onto an AlN piezoelectric cantilever with five groups of top electrodes for identification of various VOCs. Different groups of top electrodes are applied to obtain high amplitudes of multiple resonance peaks for the cantilever, thus achieving low limits of detection (LODs) to VOCs. Frequency shifts of multiple resonant modes and changes of impedance values are taken as the responses of the proposed VSA to VOCs, and these multidimensional responses generate a unique fingerprint for each VOC. On the basis of machine learning algorithms, the proposed VSA can accurately identify different types of VOCs and mixtures with accuracies of 95.8 and 87.5%, respectively. Furthermore, the VSA has successfully been applied to identify the emissions from healthy plants and "plants with late blight" with an accuracy of 89%. The high levels of identifications show great potentials of the VSA for diagnosis of infectious plant diseases by detecting VOC biomarkers.
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Affiliation(s)
- Dongsheng Li
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
| | - Boyi Zhu
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
| | - Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Qian Zhang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
| | - Mengjiao Qu
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
| | - Weiting Liu
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
| | - YongQing Fu
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Jin Xie
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, People’s Republic of China
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32
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Pang K, Zou K, Song H, Karpov M, Yessenov M, Zhao Z, Minoofar A, Zhang R, Song H, Zhou H, Su X, Hu N, Kippenberg TJ, Abouraddy AF, Tur M, Willner AE. Synthesis of near-diffraction-free orbital-angular-momentum space-time wave packets having a controllable group velocity using a frequency comb. Opt Express 2022; 30:16712-16724. [PMID: 36221508 DOI: 10.1364/oe.456781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/14/2022] [Indexed: 06/16/2023]
Abstract
Novel forms of light beams carrying orbital angular momentum (OAM) have recently gained interest, especially due to some of their intriguing propagation features. Here, we experimentally demonstrate the generation of near-diffraction-free two-dimensional (2D) space-time (ST) OAM wave packets (ℓ = +1, +2, or +3) with variable group velocities in free space by coherently combining multiple frequency comb lines, each carrying a unique Bessel mode. Introducing a controllable specific correlation between temporal frequencies and spatial frequencies of these Bessel modes, we experimentally generate and detect near-diffraction-free OAM wave packets with high mode purities (>86%). Moreover, the group velocity can be controlled from 0.9933c to 1.0069c (c is the speed of light in vacuum). These ST OAM wave packets might find applications in imaging, nonlinear optics, and optical communications. In addition, our approach might also provide some insights for generating other interesting ST beams.
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33
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Pang K, Liu X, Pang J, Samy A, Xie J, Liu Y, Peng L, Xu Z, Gao C. Highly Efficient Cellular Acoustic Absorber of Graphene Ultrathin Drums. Adv Mater 2022; 34:e2103740. [PMID: 35064589 DOI: 10.1002/adma.202103740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Atomically thin 2D graphene sheets exhibit unparalleled in-plane stiffness and large out-of-plane elasticity, thereby providing strong mechanical resonance for nanomechanical devices. The exceptional resonance behavior of ultrathin graphene, which promises the fabrication of superior acoustic absorption materials, however, remains unfulfilled for the lack of applicable form and assembly methods. Here, a highly efficient acoustic absorber is presented, wherein cellular networks of ultrathin graphene membranes are constructed into polymer foams. The ultrathin graphene drums exhibit strong resonances and efficiently dissipate sound waves in a broad frequency range. A record specific noise reduction coefficient (51.3 at 30 mm) is achieved in the graphene-based acoustic absorber, fully realizing the superior resonance properties of graphene sheets. The scalable method facilely transforms commercial polymer foams to superior acoustic absorbers with a ≈320% enhancement in average absorption coefficient across wide frequencies from 200 to 6000 Hz. The graphene acoustic absorber offers a convenient method to exploit the extraordinary resonance properties of 2D sheets, opening extensive new applications in noise protection, building design, instruments and acoustic devices.
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Affiliation(s)
- Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Xiaoting Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Jintao Pang
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Akram Samy
- Department of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China
| | - Jin Xie
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030000, China
| | - Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
- Graphene Industry and Engineering Research Institute, Xiamen University, Xiamen, 361005, China
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34
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Bian J, Zhu Q, Wang A, Sun Y, Pang K, Li X, Lang Z. Adsorption of nitrate from water by quaternized chitosan wrinkled microspheres@MgFe-LDHs core-shell composite. NEW J CHEM 2022. [DOI: 10.1039/d2nj01902g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, nitrate pollution in water became one of the global ecological problems. In this study, a new core-shell composite (GCS@CTA@MgFe-LDHs) was prepared by in-situ growth of MgFe-Cl--LDHs plates...
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35
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Li Z, Guo F, Pang K, Lin J, Gao Q, Chen Y, Chang D, Wang Y, Liu S, Han Y, Liu Y, Xu Z, Gao C. Precise Thermoplastic Processing of Graphene Oxide Layered Solid by Polymer Intercalation. Nanomicro Lett 2021; 14:12. [PMID: 34862936 PMCID: PMC8643290 DOI: 10.1007/s40820-021-00755-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/18/2021] [Indexed: 05/16/2023]
Abstract
The processing capability is vital for the wide applications of materials to forge structures as-demand. Graphene-based macroscopic materials have shown excellent mechanical and functional properties. However, different from usual polymers and metals, graphene solids exhibit limited deformability and processibility for precise forming. Here, we present a precise thermoplastic forming of graphene materials by polymer intercalation from graphene oxide (GO) precursor. The intercalated polymer enables the thermoplasticity of GO solids by thermally activated motion of polymer chains. We detect a critical minimum containing of intercalated polymer that can expand the interlayer spacing exceeding 1.4 nm to activate thermoplasticity, which becomes the criteria for thermal plastic forming of GO solids. By thermoplastic forming, the flat GO-composite films are forged to Gaussian curved shapes and imprinted to have surface relief patterns with size precision down to 360 nm. The plastic-formed structures maintain the structural integration with outstanding electrical (3.07 × 105 S m-1) and thermal conductivity (745.65 W m-1 K-1) after removal of polymers. The thermoplastic strategy greatly extends the forming capability of GO materials and other layered materials and promises versatile structural designs for more broad applications.
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Affiliation(s)
- Zeshen Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Fan Guo
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China.
- National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, 1 Guanghua Road, Nanjing, 210094, People's Republic of China.
| | - Kai Pang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Jiahao Lin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Qiang Gao
- School of Mechanical Engineering, Southeast University, Nanjing, 211189, People's Republic of China
| | - Yance Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Dan Chang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Ya Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Senping Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Yi Han
- Hangzhou Gaoxi Technology Co. Ltd, Yuhang District, Liangzhu, 311113, People's Republic of China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China.
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China.
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36
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Song H, Zhou H, Zou K, Zhang R, Pang K, Song H, Minoofar A, Su X, Hu N, Liu C, Bock R, Zach S, Tur M, Willner AE. Demonstration of generating a 100 Gbit/s orbital-angular-momentum beam with a tunable mode order over a range of wavelengths using an integrated broadband pixel-array structure. Opt Lett 2021; 46:4765-4768. [PMID: 34598194 DOI: 10.1364/ol.435725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
We experimentally generate an orbital-angular-momentum (OAM) beam with a tunable mode order over a range of wavelengths utilizing an integrated broadband pixel-array OAM emitter. The emitter is composed of a 3-to-4 coupler, four phase controllers, and a mode convertor. An optical input is split into four waveguides by the coupler. Subsequently, the four waveguide fields are coherently combined and transformed into a free-space OAM beam by the mode convertor. By tuning the phase delay Δφ between the four waveguides using the integrated phase controllers, the OAM order of the generated beam could be changed. Our results show that (a) a single OAM beam with a tunable OAM order (ℓ=-1 or ℓ=+1) is generated with the intermodal power coupling of <-11dB, and (b) in a wavelength range of 6.4 nm, a free-space link of a single 50 Gbaud quadrature-phase-shift-keying (QPSK) channel carried by the tunable OAM beam is achieved with a bit error rate below the forward-error-correction threshold. As proof of concept, a 400 Gbit/s OAM-multiplexed and WDM QPSK link is demonstrated with a ∼1-dB OSNR penalty compared with a single-beam link.
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Zhou H, Song H, Zhao Z, Zhang R, Song H, Pang K, Zou K, Liu C, Su X, Hu N, Bock R, Lynn B, Tur M, Willner AE. Modal properties of a beam carrying OAM generated by a circular array of multiple ring-resonator emitters. Opt Lett 2021; 46:4722-4725. [PMID: 34598183 DOI: 10.1364/ol.435916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
We investigate the modal properties of a beam carrying orbital angular momentum (OAM) generated by a circular array (ring) of multiple micro-ring emitters (rings) analytically and via simulation. In such a "ring-of-rings" structure, N emitters generate N optical vortex beams with the same OAM-order l0 at the same wavelength. The output beam is a coherent combination of the N vortex beams located at different azimuthal positions, having the same radial displacement. We derive an analytical expression for the output optical field and calculate the OAM-order power spectrum of the generated beam. The analytical expression and simulation results show that (1) the OAM spectrum of the output beam composes equidistant OAM spectral components, symmetrically surrounding l0 with a spacing equal to N; (2) the envelope of the OAM spectrum broadens with an increased radius of the circular array or the value of l0; and (3) the OAM components of the generated beam could be tuned either by changing the value of l0, corresponding to different spectrum envelopes, or by adding different linear phase delays to the micro-ring emitters, which does not affect the envelope of the OAM spectrum.
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Zhu X, Suo Y, Fu Y, Zhang F, Ding N, Pang K, Xie C, Weng X, Tian M, He H, Wei X. Reply to Comment on "In vivo flow cytometry reveals a circadian rhythm of circulating tumor cells". Light Sci Appl 2021; 10:189. [PMID: 34531363 PMCID: PMC8446013 DOI: 10.1038/s41377-021-00625-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 08/25/2021] [Indexed: 05/05/2023]
Affiliation(s)
- Xi Zhu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Yuanzhen Suo
- Biomedical Pioneering Innovation Center, Peking University, Beijing, 100871, China.
- School of Life Sciences, Peking University, Beijing, 100871, China.
| | - Yuting Fu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Fuli Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Nan Ding
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Kai Pang
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science & Technology University, Beijing, 100192, China
| | - Chengying Xie
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Xiaofu Weng
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Meilu Tian
- Biomedical Engineering Department, Peking University, Beijing, 100081, China
| | - Hao He
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China.
| | - Xunbin Wei
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China.
- Biomedical Engineering Department, Peking University, Beijing, 100081, China.
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, 100142, China.
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Pang K, Zou K, Song H, Zhao Z, Minoofar A, Zhang R, Song H, Zhou H, Su X, Liu C, Hu N, Tur M, Willner AE. Simulation of near-diffraction- and near-dispersion-free OAM pulses with controllable group velocity by combining multiple frequencies, each carrying a Bessel mode. Opt Lett 2021; 46:4678-4681. [PMID: 34525080 DOI: 10.1364/ol.434266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Optical pulses carrying orbital angular momentum (OAM) have recently gained interest. In general, it might be beneficial to simultaneously achieve: (i) minimum diffraction, (ii) minimum dispersion, and (iii) controllable group velocity. Here, we explore via simulation the generation of near-diffraction-free and near-dispersion-free OAM pulses with arbitrary group velocities by coherently combining multiple frequencies. Each frequency carries a specific Bessel mode with the same topological charge (ℓ) but different kr (spatial frequency) values based on space-time correlations. Moreover, we also find that (i) both positive and negative group velocities could be achieved and continuously controlled from the subluminal to superluminal values and (ii) when the ℓ is varied from 0 to 10, the simulated value of the group velocity remains the same. However, as the ℓ value increases, the pulse duration becomes longer for a given number of frequency lines.
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Pang K, Sun P, Li J, Zeng N, Yang X, Jin L, Yang Y, Jin L, Yao H, Zhang Z. Prophylactic subcutaneous drainage reduces post-operative incisional infections in colorectal surgeries: a meta-analysis of randomized controlled trials. Int J Colorectal Dis 2021; 36:1633-1642. [PMID: 33723634 DOI: 10.1007/s00384-021-03908-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/09/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND Due to lack of high-level evidences, prophylactic subcutaneous drainage has so far not been recommended in relevant guidelines as a countermeasure against incisional infections. This meta-analysis aims to clarify the efficacy of subcutaneous drainage in reducing incisional infections in colorectal surgeries. METHODS Cochrane Library, Embase, and PubMed were searched for randomized controlled trials comparing the incidence rate of incisional infections between patients receiving prophylactic subcutaneous drainage (interventions) and those not receiving (controls) after digestive surgeries. Results from included RCTs were pooled multiple times according to different surgical types. Heterogeneity, publication bias, and certainty of evidences were estimated. RESULTS Eight randomized controlled trials were included. Three RCTs each included patients receiving all sorts of digestive surgeries (gastrointestinal, hepatobiliary, and pancreatic); pooled incisional infection rates between the drainage group and the control group were not significantly different (RR = 0.76, 95%CI: 0.48-1.21, p = 0.25). Four RCTs included patients receiving colorectal surgeries; pooled incisional infection rate in the drainage group was significantly lower than that in the control group (RR = 0.34, 95%CI: 0.19-0.61, p = 0.0004). Four RCTs included patients receiving upper GI and/or HBP surgeries; pooled incisional infection rates in the drainage group and the non-drainage group were not significantly different (RR = 0.85, 95%CI: 0.54-1.34, p = 0.49). CONCLUSIONS Prophylactic subcutaneous drainage significantly reduces post-operative incisional infections in colorectal surgeries but was not efficacious in digestive surgeries in general.
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Affiliation(s)
- Kai Pang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Peilin Sun
- Peking Union Medical College, PUMC, Beijing, 100730, China
| | - Jun Li
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Na Zeng
- Department of Methodology and Statistics, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, Beijing, 100050, China
| | - Xiaobao Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Lei Jin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Yingchi Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China.
| | - Lan Jin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China.
| | - Hongwei Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China
| | - Zhongtao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, 95 Yong-an Road, Xi-Cheng District, Beijing, 100050, China.
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41
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Pang K, Alam MZ, Zhou Y, Liu C, Reshef O, Manukyan K, Voegtle M, Pennathur A, Tseng C, Su X, Song H, Zhao Z, Zhang R, Song H, Hu N, Almaiman A, Dawlaty JM, Boyd RW, Tur M, Willner AE. Adiabatic Frequency Conversion Using a Time-Varying Epsilon-Near-Zero Metasurface. Nano Lett 2021; 21:5907-5913. [PMID: 34251831 DOI: 10.1021/acs.nanolett.1c00550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A time-dependent change in the refractive index of a material leads to a change in the frequency of an optical beam passing through that medium. Here, we experimentally demonstrate that this effect-known as adiabatic frequency conversion (AFC)-can be significantly enhanced by a nonlinear epsilon-near-zero-based (ENZ-based) plasmonic metasurface. Specifically, by using a 63-nm-thick metasurface, we demonstrate a large, tunable, and broadband frequency shift of up to ∼11.2 THz with a pump intensity of 4 GW/cm2. Our results represent a decrease of ∼10 times in device thickness and 120 times in pump peak intensity compared with the cases of bare, thicker ENZ materials for the similar amount of frequency shift. Our findings might potentially provide insights for designing efficient time-varying metasurfaces for the manipulation of ultrafast pulses.
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Affiliation(s)
- Kai Pang
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - M Zahirul Alam
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
| | - Yiyu Zhou
- The Institute of Optics, University of Rochester, Rochester, New York 14627, United States
| | - Cong Liu
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States
| | - Orad Reshef
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
| | - Karapet Manukyan
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Matt Voegtle
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Anuj Pennathur
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Cindy Tseng
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Xinzhou Su
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Hao Song
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Zhe Zhao
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Runzhou Zhang
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Haoqian Song
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Nanzhe Hu
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Ahmed Almaiman
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
- King Saud University, Riyadh, Saudi Arabia
| | - Jahan M Dawlaty
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Robert W Boyd
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
- The Institute of Optics, University of Rochester, Rochester, New York 14627, United States
| | - Moshe Tur
- School of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Alan E Willner
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
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42
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Liu C, Alam MZ, Pang K, Manukyan K, Hendrickson JR, Smith EM, Zhou Y, Reshef O, Song H, Zhang R, Song H, Alishahi F, Fallahpour A, Almaiman A, Boyd RW, Tur M, Willner AE. Tunable Doppler shift using a time-varying epsilon-near-zero thin film near 1550 nm. Opt Lett 2021; 46:3444-3447. [PMID: 34264234 DOI: 10.1364/ol.430106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
We experimentally investigate the tunable Doppler shift in an 80 nm thick indium-tin-oxide (ITO) film at its epsilon-near-zero (ENZ) region. Under strong and pulsed excitation, ITO exhibits a time-varying change in the refractive index. A maximum frequency redshift of 1.8 THz is observed in the reflected light when the pump light has a peak intensity of ∼140GW/cm2 and a pulse duration of ∼580fs, at an incident angle of 40°. The frequency shift increases with the increase in pump intensity and saturates at the intensity of ∼140GW/cm2. When the pump pulse duration increases from ∼580fs to ∼1380fs, the maximum attainable frequency shift decreases from 1.8 THz to 0.7 THz. In addition, the pump energy required to saturate the frequency shift decreases with the increase in pump pulse duration for ∼x<1ps and remains unchanged for ∼x>1ps durations. Tunability exists among the pump pulse energy, duration, and incident angle for the Doppler shift of the ITO-ENZ material, which can be employed to design efficient frequency shifters for telecom applications.
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43
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Weng X, Wei D, Yang Z, Pang W, Pang K, Gu B, Wei X. Photodynamic therapy reduces metastasis of breast cancer by minimizing circulating tumor cells. Biomed Opt Express 2021; 12:3878-3886. [PMID: 34457386 PMCID: PMC8367230 DOI: 10.1364/boe.429947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/12/2021] [Accepted: 05/15/2021] [Indexed: 06/13/2023]
Abstract
Cancer metastasis after traditional surgery introduces a high barrier to therapy efficacy. Photodynamic therapy (PDT) for cancer is based on a photochemical process of photosensitizers that concentrate in tumors and release oxidant species under light excitation to destroy cells. Compared with traditional surgery, PDT provides minimal invasion and targeted therapy. In this in vivo study, we monitor the real-time and long-term dynamics of circulating tumor cells (CTCs) after a single round of PDT and after surgical resection in a breast cancer animal model. The CTC level is low after PDT treatment, and the recurrence of the primary tumor is postponed in the PDT group compared with the resection group. We find that metastasis is correlated with the CTC level, and the PDT-treated mice show no metastasis in the lung or liver. Our results suggest PDT can effectively reduce metastasis by minimizing CTCs after treatment and is a great technology for breast cancer therapy.
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Affiliation(s)
- Xiaofu Weng
- School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
| | - Dan Wei
- Key Laboratory of Oceanographic Big Data Mining and Application of Zhejiang Province, School of Information Engineering, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
| | - Zhangru Yang
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, No. 241 West Huaihai Road, Shanghai 200030, China
| | - Wen Pang
- School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
| | - Kai Pang
- School of Instrument Science and Opto Electronics Engineering of Beijing Information Science and Technology University, Beijing 100192, China
| | - Bobo Gu
- School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
| | - Xunbin Wei
- School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
- Biomedical Engineering Department, Peking University, Beijing, 100081, China
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, Beijing, 100142, China
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44
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Zhu X, Suo Y, Fu Y, Zhang F, Ding N, Pang K, Xie C, Weng X, Tian M, He H, Wei X. In vivo flow cytometry reveals a circadian rhythm of circulating tumor cells. Light Sci Appl 2021; 10:110. [PMID: 34045431 PMCID: PMC8160330 DOI: 10.1038/s41377-021-00542-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 05/13/2023]
Abstract
Circulating tumor cells (CTCs) is an established biomarker of cancer metastasis. The circulation dynamics of CTCs are important for understanding the mechanisms underlying tumor cell dissemination. Although studies have revealed that the circadian rhythm may disrupt the growth of tumors, it is generally unclear whether the circadian rhythm controls the release of CTCs. In clinical examinations, the current in vitro methods for detecting CTCs in blood samples are based on a fundamental assumption that CTC counts in the peripheral blood do not change significantly over time, which is being challenged by recent studies. Since it is not practical to draw blood from patients repeatedly, a feasible strategy to investigate the circadian rhythm of CTCs is to monitor them by in vivo detection methods. Fluorescence in vivo flow cytometry (IVFC) is a powerful optical technique that is able to detect fluorescent circulating cells directly in living animals in a noninvasive manner over a long period of time. In this study, we applied fluorescence IVFC to monitor CTCs noninvasively in an orthotopic mouse model of human prostate cancer. We observed that CTCs exhibited stochastic bursts over cancer progression. The probability of the bursting activity was higher at early stages than at late stages. We longitudinally monitored CTCs over a 24-h period, and our results revealed striking daily oscillations in CTC counts that peaked at the onset of the night (active phase for rodents), suggesting that the release of CTCs might be regulated by the circadian rhythm.
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Affiliation(s)
- Xi Zhu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Yuanzhen Suo
- Biomedical Pioneering Innovation Center, Peking University, 100871, Beijing, China.
- School of Life Sciences, Peking University, 100871, Beijing, China.
| | - Yuting Fu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Fuli Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Nan Ding
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Kai Pang
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University, 100192, Beijing, China
| | - Chengying Xie
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Xiaofu Weng
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China
| | - Meilu Tian
- Biomedical Engineering Department, Peking University, 100081, Beijing, China
| | - Hao He
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China.
| | - Xunbin Wei
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China.
- Biomedical Engineering Department, Peking University, 100081, Beijing, China.
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 100142, Beijing, China.
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45
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Weng X, Wei D, Zhu X, Tao L, Guo J, Pang K, Yang Z, Wei X. Real-time monitoring of single circulating tumor cells with a fluorescently labeled deoxy-glucose by in vivo flow cytometry. Cytometry A 2021; 99:586-592. [PMID: 33797159 DOI: 10.1002/cyto.a.24344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/21/2021] [Accepted: 03/25/2021] [Indexed: 11/11/2022]
Abstract
Circulating tumor cells (CTCs) play an essential role in metastasis and serve as an important prognostic biomarker. The technology of CTC labeling and detection in vivo can greatly improve the research of cancer metastasis and therapy. However, there is no in vivo technology to detect CTCs in clinic. In this study, we demonstrate that 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino]-2-deoxy-d-glucose (2-NBDG), a 2-deoxy-glucose analog, can work in vivo to indicate CTCs and metastases fluorescently by direct intravenous injection. During the development of an implanted tumor in mice, the spontaneous CTCs released from the primary tumor into blood vessels can be labeled by 2-NBDG due to the abnormal metabolism of CTCs. The green fluorescence of 2-NBDG from CTCs is then noninvasively detected by an in vivo flow cytometry system. Due to the high uptake of glucose by tumor cells, the CTCs in mice can maintain a high 2-NBDG level and thus be distinguished by 2-NBDG fluorescence in vivo efficiently, enabling tumor detection in vivo like positron emission tomography (PET) but at the single-cell resolution. Our results suggest 2-NBDG, a glucose analog with high biosafety, holds promising potential in clinical applications, similar to the widely-used contrast medium 2-F18 -fluorodeoxyglucose in PET.
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Affiliation(s)
- Xiaofu Weng
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Dan Wei
- Key Laboratory of Oceanographic Big Data Mining & Application of Zhejiang Province, School of Information Engineering, Zhejiang Ocean University, Zhejiang, China
| | - Xi Zhu
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Lechan Tao
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Guo
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Peking University Cancer Hospital, Beijing, China
| | - Kai Pang
- School of Instrument Science and Opto Electronics Engineering of Beijing Information Science & Technology University, Beijing, China
| | - Zhangru Yang
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xunbin Wei
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.,Biomedical Engineering Department, Peking University, Beijing, China.,Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Peking University Cancer Hospital, Beijing, China
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46
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Song X, Liu X, Peng Y, Xu Z, Liu W, Pang K, Wang J, Zhong L, Yang Q, Meng J. A graphene-coated silk-spandex fabric strain sensor for human movement monitoring and recognition. Nanotechnology 2021; 32:215501. [PMID: 33601355 DOI: 10.1088/1361-6528/abe788] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Flexible and stretchable sensors are emerging and promising wearable devices for motion monitoring. Manufacturing a flexible and stretchable strain sensor with desirable electromechanical performance and excellent skin compatibility plays an essential role in building a smart wearable system. In this paper, a graphene-coated silk-spandex (GCSS) fabric strain sensor is prepared by reducing graphene oxide. The sensor functions as a result of conductive fiber extending and woven structure deforming. The conductive fabric can be stretched towards 60% with high sensitivity, and its performance remains constant after a 1000-cycle test. Based on its superior performance, the GCSS is successfully employed to detect full-range human movement and provide data for deep learning-based gesture recognition. This work offers a desirable method to fabricate low-cost strain sensors for industrial applications such as human movement detection and advanced information science.
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Affiliation(s)
- Xian Song
- Department of Sports Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Xiaoting Liu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Yuxin Peng
- Department of Sports Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Zhen Xu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Wenming Liu
- Department of Sports Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Kai Pang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Jianxiang Wang
- Department of Sports Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Liang Zhong
- Department of Sports Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Qiang Yang
- College of Electrical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Jun Meng
- College of Electrical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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47
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Zhao Z, Zhang R, Song H, Pang K, Almaiman A, Zhou H, Song H, Liu C, Hu N, Su X, Minoofar A, Sasaki H, Lee D, Tur M, Molisch AF, Willner AE. Modal coupling and crosstalk due to turbulence and divergence on free space THz links using multiple orbital angular momentum beams. Sci Rep 2021; 11:2110. [PMID: 33483536 PMCID: PMC7822854 DOI: 10.1038/s41598-020-80179-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/16/2020] [Indexed: 11/09/2022] Open
Abstract
Orbital-angular-momentum (OAM) multiplexing has been utilized to increase the channel capacity in both millimeter-wave and optical domains. Terahertz (THz) wireless communication is attracting increasing attention due to its broadband spectral resources. Thus, it might be valuable to explore the system performance of THz OAM links to further increase the channel capacity. In this paper, we study through simulations the fundamental system-degrading effects when using multiple OAM beams in THz communications links under atmospheric turbulence. We simulate and analyze the effects of divergence, turbulence, limited-size aperture, and misalignment on the signal power and crosstalk of THz OAM links. We find through simulations that the system-degrading effects are different in two scenarios with atmosphere turbulence: (a) when we consider the same strength of phasefront distortion, faster divergence (i.e., lower frequency; smaller beam waist) leads to higher power leakage from the transmitted mode to neighbouring modes; and (b) however, when we consider the same atmospheric turbulence, the divergence effect tends to affect the power leakage much less, and the power leakage increases as the frequency, beam waist, or OAM order increases. Simulation results show that: (i) the crosstalk to the neighbouring mode remains < - 15 dB for a 1-km link under calm weather, when we transmit OAM + 4 at 0.5 THz with a beam waist of 1 m; (ii) for the 3-OAM-multiplexed THz links, the signal-to-interference ratio (SIR) increases by ~ 5-7 dB if the mode spacing increases by 1, and SIR decreases with the multiplexed mode number; and (iii) limited aperture size and misalignment lead to power leakage to other modes under calm weather, while it tends to be unobtrusive under bad weather.
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Affiliation(s)
- Zhe Zhao
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA.
| | - Runzhou Zhang
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Hao Song
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Kai Pang
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Ahmed Almaiman
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA.,King Saud University, Riyadh, 11362, Saudi Arabia
| | - Huibin Zhou
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Haoqian Song
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Cong Liu
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Nanzhe Hu
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Xinzhou Su
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Amir Minoofar
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Hirofumi Sasaki
- NTT Network Innovation Laboratories, NTT Corporation, Yokosuka, 239-0847, Japan
| | - Doohwan Lee
- NTT Network Innovation Laboratories, NTT Corporation, Yokosuka, 239-0847, Japan
| | - Moshe Tur
- School of Electrical Engineering, Tel Aviv University, 69978, Ramat Aviv, Israel
| | - Andreas F Molisch
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Alan E Willner
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA, 90089, USA
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48
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Peng Y, Zhou J, Song X, Pang K, Samy A, Hao Z, Wang J. A Flexible Pressure Sensor with Ink Printed Porous Graphene for Continuous Cardiovascular Status Monitoring. Sensors (Basel) 2021; 21:E485. [PMID: 33445532 PMCID: PMC7828094 DOI: 10.3390/s21020485] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/05/2021] [Accepted: 01/09/2021] [Indexed: 01/01/2023]
Abstract
Flexible electronics with continuous monitoring ability a extensively preferred in various medical applications. In this work, a flexible pressure sensor based on porous graphene (PG) is proposed for continuous cardiovascular status monitoring. The whole sensor is fabricated in situ by ink printing technology, which grants it the potential for large-scale manufacture. Moreover, to enhance its long-term usage ability, a polyethylene terephthalate/polyethylene vinylacetate (PET/EVA)-laminated film is employed to protect the sensor from unexpected shear forces on the skin surface. The sensor exhibits great sensitivity (53.99/MPa), high resolution (less than 0.3 kPa), wide detecting range (0.3 kPa to 1 MPa), desirable robustness, and excellent repeatability (1000 cycles). With the assistance of the proposed pressure sensor, vital cardiovascular conditions can be accurately monitored, including heart rate, respiration rate, pulse wave velocity, and blood pressure. Compared to other sensors based on self-supporting 2D materials, this sensor can endure more complex environments and has enormous application potential for the medical community.
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Affiliation(s)
- Yuxin Peng
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Jingzhi Zhou
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Xian Song
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Kai Pang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Akram Samy
- Department of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
| | - Zengming Hao
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Jian Wang
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
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49
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Pidamaimaiti G, Huang X, Pang K, Su Z, Wang F. A microenvironment-mediated Cu2O–MoS2 nanoplatform with enhanced Fenton-like reaction activity for tumor chemodynamic/photothermal therapy. NEW J CHEM 2021. [DOI: 10.1039/d1nj01272j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chemodynamic therapy (CDT) with selective therapeutic and minimal side effects has attracted increasing attention in recent years.
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Affiliation(s)
| | - Xiaoyu Huang
- School of Biomedical Engineering Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Kai Pang
- School of Instrument Science and Opto Electronics Engineering of Beijing Information Science & Technology University
- Beijing 100192
- China
| | - Zhi Su
- College of Chemistry and Chemical Engineering
- Xinjiang Normal University
- Urumqi
- China
| | - Fu Wang
- School of Biomedical Engineering Shanghai Jiao Tong University
- Shanghai 200240
- China
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50
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Pang K, Song H, Su X, Zou K, Zhao Z, Song H, Almaiman A, Zhang R, Liu C, Hu N, Zach S, Cohen N, Lynn B, Molisch AF, Boyd RW, Tur M, Willner AE. Experimental mitigation of the effects of the limited size aperture or misalignment by singular-value-decomposition-based beam orthogonalization in a free-space optical link using Laguerre-Gaussian modes. Opt Lett 2020; 45:6310-6313. [PMID: 33186977 DOI: 10.1364/ol.405399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Limited-size receiver (Rx) apertures and transmitter-Rx (Tx-Rx) misalignments could induce power loss and modal crosstalk in a mode-multiplexed free-space link. We experimentally demonstrate the mitigation of these impairments in a 400 Gbit/s four-data-channel free-space optical link. To mitigate the above degradations, our approach of singular-value-decomposition-based (SVD-based) beam orthogonalization includes (1) measuring the transmission matrix H for the link given a limited-size aperture or misalignment; (2) performing SVD on the transmission matrix to find the U, Σ, and V complex matrices; (3) transmitting each data channel on a beam that is a combination of Laguerre-Gaussian modes with complex weights according to the V matrix; and (4) applying the U matrix to the channel demultiplexer at the Rx. Compared with the case of transmitting each channel on a beam using a single mode, our experimental results when transmitting multi-mode beams show that (a) with a limited-size aperture, the power loss and crosstalk could be reduced by ∼8 and ∼23dB, respectively; and (b) with misalignment, the power loss and crosstalk could be reduced by ∼15 and ∼40dB, respectively.
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