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Gao S, Li H, Liu L, Tian Y, Wang R, Pan X, Wen F, Xiang J, Nie A, Zhai K, Wang B, Mu C, Xue T, Liu Z. Ultrasensitive CCL2 Detection in Urine for Diabetic Nephropathy Diagnosis Using a WS 2-Based Plasmonic Biosensor. Nano Lett 2024; 24:5301-5307. [PMID: 38625005 DOI: 10.1021/acs.nanolett.4c00981] [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] [Indexed: 04/17/2024]
Abstract
The accurate diagnosis of diabetic nephropathy relies on achieving ultrasensitive biosensing for biomarker detection. However, existing biosensors face challenges such as poor sensitivity, complexity, time-consuming procedures, and high assay costs. To address these limitations, we report a WS2-based plasmonic biosensor for the ultrasensitive detection of biomarker candidates in clinical human urine samples associated with diabetic nephropathy. Leveraging plasmonic-based electrochemical impedance microscopy (P-EIM) imaging, we observed a remarkable charge sensitivity in monolayer WS2 single crystals. Our biosensor exhibits an exceptionally low detection limit (0.201 ag/mL) and remarkable selectivity in detecting CC chemokine ligand 2 (CCL2) protein biomarkers, outperforming conventional techniques such as ELISA. This work represents a breakthrough in traditional protein sensors, providing a direction and materials foundation for developing ultrasensitive sensors tailored to clinical applications for biomarker sensing.
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Affiliation(s)
- Shuangshuang Gao
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Huili Li
- Department of Endocrinology, The First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - Lixuan Liu
- Institute of Quantum Materials and Devices, School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China
| | - Yiming Tian
- Department of Endocrinology, The First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - Rui Wang
- Department of Endocrinology, The First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - Xuanlin Pan
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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Liu Y, Gao S, Liu L, Wang J, Wang D, Xiang J, Nie A, Zhai K, Mu C, Wen F, Wang B, Xue T, Liu Z. Plasmonic Imaging of Single DNA with Charge Sensitive Monolayer WS 2. ACS Sens 2024. [PMID: 38626725 DOI: 10.1021/acssensors.4c00167] [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] [Indexed: 04/18/2024]
Abstract
Imaging the surface charge of biomolecules such as proteins and DNA, is crucial for comprehending their structure and function. Unfortunately, current methods for label-free, sensitive, and rapid imaging of the surface charge of single DNA molecules are limited. Here, we propose a plasmonic microscopy strategy that utilizes charge-sensitive single-crystal monolayer WS2 materials to image the local charge density of a single λ-DNA molecule. Our study reveals that WS2 is a highly sensitive charge-sensitive material that can accurately measure the local charge density of λ-DNA with high spatial resolution and sensitivity. The consistency of the surface charge density values obtained from the single-crystal monolayer WS2 materials with theoretical simulations demonstrates the reliability of our approach. Our findings suggest that this class of materials has significant implications for the development of label-free, scanning-free, and rapid optical detection and charge imaging of biomolecules.
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Affiliation(s)
- Yang Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Shuangshuang Gao
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lixuan Liu
- Institute of Quantum Materials and Devices, School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China
| | - Ji Wang
- BGI Research, Shenzhen 518000, China
| | | | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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Wang Z, Liu L, Li P, Nie A, Zhai K, Xiang J, Mu C, Wen F, Wang B, Xue T, Liu Z. Ferroelectric Bi 2O 2Te-Based Plasmonic Biosensor for Ultrasensitive Biomolecular Detection. Small 2024:e2312175. [PMID: 38534021 DOI: 10.1002/smll.202312175] [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: 12/28/2023] [Revised: 03/15/2024] [Indexed: 03/28/2024]
Abstract
Ultrasensitive detection of biomarkers, particularly proteins, and microRNA, is critical for disease early diagnosis. Although surface plasmon resonance biosensors offer label-free, real-time detection, it is challenging to detect biomolecules at low concentrations that only induce a minor mass or refractive index change on the analyte molecules. Here an ultrasensitive plasmonic biosensor strategy is reported by utilizing the ferroelectric properties of Bi2O2Te as a sensitive-layer material. The polarization alteration of ferroelectric Bi2O2Te produces a significant plasmonic biosensing response, enabling the detection of charged biomolecules even at ultralow concentrations. An extraordinary ultralow detection limit of 1 fm is achieved for protein molecules and an unprecedented 0.1 fm for miRNA molecules, demonstrating exceptional specificity. The finding opens a promising avenue for the integration of 2D ferroelectric materials into plasmonic biosensors, with potential applications spanning a wide range.
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Affiliation(s)
- Zheng Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Lixuan Liu
- Institute of Quantum Materials and Devices, School of Electronics and Information Engineering, Tiangong University, Tianjin, 300387, China
| | - Penghui Li
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
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Ma J, Zhang M, Yang D, Zhai K, Yu L, Hu C, Dong W, Huang Y. Three-dimensional finite element analysis on stress distribution after different palatoplasty and levator veli palatini muscle reconstruction. Clin Oral Investig 2024; 28:221. [PMID: 38499908 DOI: 10.1007/s00784-024-05583-9] [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: 09/30/2023] [Accepted: 02/25/2024] [Indexed: 03/20/2024]
Abstract
OBJECTIVES To establish a three-dimensional finite element model of the upper palate, pharyngeal cavity, and levator veli palatini muscle in patients with unilateral complete cleft palate, simulate two surgical procedures that the two-flap method and Furlow reverse double Z method, observe the stress distribution of the upper palate soft tissue and changes in pharyngeal cavity area after different surgical methods, and verify the accuracy of the model by reconstructing and measuring the levator veli palatini muscle. MATERIALS AND METHODS Mimics, Geomagic, Ansys, and Hypermesh were applied to establish three-dimensional finite element models of the pharyngeal cavity, upper palate, and levator veli palatini muscle in patients with unilateral complete cleft palate. The parameters including length, angle, and cross-sectional area of the levator veli palatini muscle etc. were measured in Mimics, and two surgical procedures that two-flap method and Furlow reverse double Z method were simulated in Ansys, and the area of pharyngeal cavity was measured by hypermesh. RESULTS A three-dimensional finite element model of the upper palate, pharyngeal cavity, and bilateral levator veli palatini muscle was established in patients with unilateral complete cleft palate ; The concept of horizontal projection characteristics of the palatal dome was applied to the finite element simulation of cleft palate surgery, vividly simulating the displacement and elastic stretching of the two flap method and Furlow reverse double Z method during the surgical process; The areas with the highest stress in the two-flap method and Furlow reverse double Z method both occur in the hard soft palate junction area; In resting state, as measured, the two flap method can narrow the pharyngeal cavity area by 50.9%, while the Furlow reverse double Z method can narrow the pharyngeal cavity area by 65.4%; The measurement results of the levator veli palatini muscle showed no significant difference compared to previous studies, confirming the accuracy of the model. CONCLUSIONS The finite element method was used to establish a model to simulate the surgical procedure, which is effective and reliable. The area with the highest postoperative stress for both methods is the hard soft palate junction area, and the stress of the Furlow reverse double Z method is lower than that of the two-flap method. The anatomical conditions of pharyngeal cavity of Furlow reverse double Z method are better than that of two-flap method in the resting state. CLINICAL RELEVANCE This article uses three-dimensional finite element method to simulate the commonly used two-flap method and Furlow reverse double Z method in clinical cleft palate surgery, and analyzes the stress distribution characteristics and changes in pharyngeal cavity area of the two surgical methods, in order to provide a theoretical basis for the surgeon to choose the surgical method and reduce the occurrence of complications.
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Affiliation(s)
- Jian Ma
- The General Hospital of Ningxia Medical University, Yinchuan, China.
| | - Meng Zhang
- Stomatology College of Ningxia Medical University, Yinchuan, China
- Nanjing Drum Tower Hospital Group Suqian Hospital, Suqian Hospital affiliated to Xuzhou Medical University, Suqian, China
| | - Denglan Yang
- Stomatology College of Ningxia Medical University, Yinchuan, China
| | - Kun Zhai
- The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Lili Yu
- The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Chen Hu
- The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Wen Dong
- The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yongqing Huang
- The General Hospital of Ningxia Medical University, Yinchuan, China.
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5
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An WX, Gupta R, Zhai K, Wang YR, Xu WH, Cui Y. Current and Potential Roles of Ferroptosis in Bladder Cancer. Curr Med Sci 2024; 44:51-63. [PMID: 38057536 DOI: 10.1007/s11596-023-2814-6] [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] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/22/2023] [Indexed: 12/08/2023]
Abstract
Ferroptosis, a type of regulated cell death driven by iron-dependent lipid peroxidation, is mainly initiated by extramitochondrial lipid peroxidation due to the accumulation of iron-dependent reactive oxygen species. Ferroptosis is a prevalent and primitive form of cell death. Numerous cellular metabolic processes regulate ferroptosis, including redox homeostasis, iron regulation, mitochondrial activity, amino acid metabolism, lipid metabolism, and various disease-related signaling pathways. Ferroptosis plays a pivotal role in cancer therapy, particularly in the eradication of aggressive malignancies resistant to conventional treatments. Multiple studies have explored the connection between ferroptosis and bladder cancer, focusing on its incidence and treatment outcomes. Several biomolecules and tumor-associated signaling pathways, such as p53, heat shock protein 1, nuclear receptor coactivator 4, RAS-RAF-MEK, phosphatidylinositol 3-kinase-AKT-mammalian target of rapamycin, and the Hippo-tafazzin signaling system, exert a moderating influence on ferroptosis in bladder cancer. Ferroptosis inducers, including erastin, artemisinin, conjugated polymer nanoparticles, and quinazolinyl-arylurea derivatives, hold promise for enhancing the effectiveness of conventional anticancer medications in bladder cancer treatment. Combining conventional therapeutic drugs and treatment methods related to ferroptosis offers a promising approach for the treatment of bladder cancer. In this review, we analyze the research on ferroptosis to augment the efficacy of bladder cancer treatment.
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Affiliation(s)
- Wen-Xin An
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Radheshyam Gupta
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Kun Zhai
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Ya-Ru Wang
- Department of Internal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Wan-Hai Xu
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, 150081, China.
| | - Yan Cui
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, 150081, China.
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Zhou H, Ding H, Gao X, Shen Z, Zhai K, Wang B, Mu C, Wen F, Xiang J, Xue T, Shu Y, Wang L, Liu Z. Pressure effect on the magnetism and crystal structure of magnetoelectric metal-organic framework [CH 3NH 3][Co(HCOO) 3]. Phys Chem Chem Phys 2023. [PMID: 38048069 DOI: 10.1039/d3cp02311g] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
[CH3NH3][Co(HCOO)3] is the first perovskite-like metal-organic framework exhibiting spin-driven magnetoelectric effects. However, the high-pressure tuning effects on the magnetic properties and crystal structure of [CH3NH3][Co(HCOO)3] have not been studied. In this work, alongside ac magnetic susceptibility measurements, we investigate the magnetic transition temperature evolution under high pressure. Upon increasing the pressure from atmospheric pressure to 0.5 GPa, TN (15.2 K) remains almost unchanged. Continuing to compress the sample results in TN gradually decreasing to 14.8 K at 1.5 GPa. This may be due to pressure induced changes in the bond distance and bond angle of the O-C-O superexchange pathway. In addition, by using high pressure powder X-ray diffraction and Raman spectroscopy, we conducted in-depth research on the pressure dependence of the lattice parameters and Raman modes of [CH3NH3][Co(HCOO)3]. The increase in pressure gives rise to a phase transition from the orthorhombic Pnma to a monoclinic phase at approximately 6.13 GPa. Our study indicates that high pressure can profoundly alter the crystal structure and magnetic properties of perovskite type MOF materials, which could inspire new endeavors in exploring novel phenomena in compressed metal-organic frameworks.
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Affiliation(s)
- Houjian Zhou
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Hao Ding
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Xin Gao
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Zhiwei Shen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Bochong Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Congpu Mu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Tianyu Xue
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Yu Shu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Lin Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
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7
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Chang S, Liu L, Mu C, Wen F, Xiang J, Zhai K, Wang B, Wu L, Nie A, Shu Y, Xue T, Liu Z. An Ultrasensitive SPR biosensor for RNA detection based on robust GeP 5 nanosheets. J Colloid Interface Sci 2023; 651:938-947. [PMID: 37579668 DOI: 10.1016/j.jcis.2023.08.064] [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] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/20/2023] [Accepted: 08/10/2023] [Indexed: 08/16/2023]
Abstract
Ultrasensitive and rapid detection of biomarkers is among the upmost priorities in promoting healthcare advancements. Improved sensitivity of photonic sensors based on two-dimensional (2D) materials have brought exciting prospects for achieving real-time and label-free biosensing at dilute target concentrations. Here, we report a high-sensitivity surface plasmon resonance (SPR) RNA sensor using metallic 2D GeP5 nanosheets as the sensing material. Theoretical evaluations revealed that the presence of GeP5 nanosheets can greatly enhance the plasmonic electric field of the Au film thereby boosting sensing sensitivity, and that optimal sensitivity (146° RIU-1) can be achieved with 3-nm-thick GeP5. By functionalizing GeP5 nanosheets with specific cDNA probes, detection of SARS-CoV-2 RNA sequences were achieved using the GeP5-based SPR sensor, with high sensitivity down to a detection limit of 10 aM and excellent selectivity. This work demonstrates the immense potential of GeP5-based SPR sensors for advanced biosensing applications and paves the way for utilizing GeP5 nanosheets in novel sensor devices.
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Affiliation(s)
- Shaopeng Chang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lixuan Liu
- Institute of Quantum Materials and Devices, School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China.
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Leiming Wu
- Guangdong Provincial Key Laboratory of Information Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yu Shu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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8
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Wang Z, Liu L, Zhai K, Nie A, Xiang J, Mu C, Wen F, Wang B, Shu Y, Xue T, Liu Z. An Ultrasensitive Plasmonic Sensor Based on 2D Ferroelectric Bi 2 O 2 Se. Small 2023; 19:e2303026. [PMID: 37394706 DOI: 10.1002/smll.202303026] [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: 04/12/2023] [Revised: 06/13/2023] [Indexed: 07/04/2023]
Abstract
Plasmonic biosensing is a label-free detection method that is commonly used to measure various biomolecular interactions. However, one of the main challenges in this approach is the ability to detect biomolecules at low concentrations with sufficient sensitivity and detection limits. Here, 2D ferroelectric materials are employed to address the issues with sensitivity in biosensor design. A plasmonic sensor based on Bi2 O2 Se nanosheets, a ferroelectric 2D material, is presented for the ultrasensitive detection of the protein molecule. Through imaging the surface charge density of Bi2 O2 Se, a detection limit of 1 fM is achieved for bovine serum albumin (BSA). These findings underscore the potential of ferroelectric 2D materials as critical building blocks for future biosensor and biomaterial architectures.
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Affiliation(s)
- Zheng Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Lixuan Liu
- Institute of Quantum Materials and Devices, School of Electronics and Information Engineering, Tiangong University, Tianjin, 300387, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Yu Shu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
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9
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Zhai K, Yuan X, Zhao G. The impact of major public health emergencies on Trust in Government: From SARS to COVID-19. Front Psychol 2022; 13:1030125. [DOI: 10.3389/fpsyg.2022.1030125] [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] [Received: 08/28/2022] [Accepted: 10/10/2022] [Indexed: 11/17/2022] Open
Abstract
Major public health emergencies always test the credibility of the government. The success of governments’ strategies relies on trust in government and broad acceptance of response measures. The profound experience of the epidemic often has a long-term impact on people’s cognition. We construct a difference-in-difference estimator by combining the variations of epidemic effects across cohorts and regions, and intend to evaluate the long-term effect of individuals’ early SARS experience on trust in government during the COVID-19 pandemic. We also use the instrumental variable method to overcome the endogenous problem caused by two-way causality. The results show that the impact of COVID-19 has significantly reduced trust in government of the groups who had not been exposed to the SARS epidemic (including groups who were in early childhood and the unborn during the SARS outbreak). While it has a positive impact on trust in government of people experienced SARS in adolescence, and only a little negative impact on trust in government of people experienced SARS in adulthood. We also find that the impact of COVID-19 mainly reduced the trust in government among groups socially vulnerable or without SARS experience (e.g., low income, low social status etc.). The results suggest that: (a) the trust created by governments’ successful anti-epidemic measures is long-lasting; (b) governments should pay more attention to their trust among socially vulnerable groups.
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10
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Yu Z, Zhai K, Wang Q, Ding H, Nie A, Wang B, Xiang J, Wen F, Mu C, Xue T, Shen S, Liu Z. Magnetic field reversal of electric polarization and pressure-temperature-magnetic field magnetoelectric phase diagram of the hexaferrite Ba 0.4Sr 1.6Mg 2Fe 12O 22. J Phys Condens Matter 2022; 34:485804. [PMID: 36174548 DOI: 10.1088/1361-648x/ac965c] [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: 06/14/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Pressure, as an independent thermodynamic parameter, is an effective tool to obtain novel material system and exotic physical phenomena not accessible at ambient conditions, because it profoundly modifies the charge, orbital and spin state by reducing the interatomic distance in crystal structure. However, the studies of magnetoelectricity and multiferroicity are rarely extended to high pressure dimension due to properties measured inside the high pressure vessel being a challenge. Here we reported the temperature-magnetic field-pressure magnetoelectric (ME) phase diagram of Y type hexaferrite Ba0.4Sr1.6Mg2Fe12O22derived from static pyroelectric current measurement and dynamic magnetodielectric in diamond anvil cell and piston cylinder cell. We found that a new spin-driven ferroelectric phase emerged atP= 0.7 GPa and sequentially ME effect disappeared aroundP= 4.3 GPa. The external pressure may enhance easy plane anisotropy to destabilize the longitudinal conical magnetic structure with the suppression of ME coefficient. These results offer essential clues for the correlation between ME effect and magnetic structure evolution under high pressure.
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Affiliation(s)
- Zhipeng Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Qingkai Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Hao Ding
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Anmin Nie
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Bochong Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Congpu Mu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Tianyu Xue
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Shipeng Shen
- The Institute of Advance Materials, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
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11
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Li Z, Tang M, Huang J, Qin F, Ao L, Shen Z, Zhang C, Chen P, Bi X, Qiu C, Yu Z, Zhai K, Ideue T, Wang L, Liu Z, Tian Y, Iwasa Y, Yuan H. Magnetic Anisotropy Control with Curie Temperature above 400 K in a van der Waals Ferromagnet for Spintronic Device. Adv Mater 2022; 34:e2201209. [PMID: 35448916 DOI: 10.1002/adma.202201209] [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] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/07/2022] [Indexed: 06/14/2023]
Abstract
The technological appeal of van der Waals ferromagnetic materials is the ability to control magnetism under external fields with desired thickness toward novel spintronic applications. For practically useful devices, ferromagnetism above room temperature or tunable magnetic anisotropy is highly demanded but remains challenging. To date, only a few layered materials exhibit unambiguous ferromagnetic ordering at room temperature via gating techniques or interface engineering. Here, it is demonstrated that the magnetic anisotropy control and dramatic modulation of Curie temperature (Tc ) up to 400 K are realized in layered Fe5 GeTe2 via the high-pressure diamond-anvil-cell technique. Magnetic phases manifesting with in-plane anisotropic, out-of-plane anisotropic and nearly isotropic magnetic states can be tuned in a controllable way, depicted by the phase diagram with a maximum Tc up to 360 K. Remarkably, the Tc can be gradually enhanced to above 400 K owing to the Fermi surface evolution during a pressure loading-deloading process. Such an observation sheds light on the understanding and control of emergent magnetic states in practical spintronic applications.
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Affiliation(s)
- Zeya Li
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Ming Tang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
- School of Physics, Nanjing University, Nanjing, 210000, China
| | - Junwei Huang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Feng Qin
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Lingyi Ao
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Zhiwei Shen
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Caorong Zhang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
- School of Physics, Nanjing University, Nanjing, 210000, China
| | - Peng Chen
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Xiangyu Bi
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Caiyu Qiu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
| | - Zhipeng Yu
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Kun Zhai
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Toshiya Ideue
- Quantum Phase Electronic Center and Department of Applied Physics, The University of Tokyo, Tokyo, 113-8656, Japan
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - Lin Wang
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Yongjun Tian
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066000, China
| | - Yoshihiro Iwasa
- Quantum Phase Electronic Center and Department of Applied Physics, The University of Tokyo, Tokyo, 113-8656, Japan
- RIKEN Center for Emergent Matter Science, Hirosawa 2-1, Wako, 351-0198, Japan
| | - Hongtao Yuan
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210000, China
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12
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Zhou H, Ding H, Yu Z, Yu T, Zhai K, Wang B, Mu C, Wen F, Xiang J, Xue T, Wang L, Liu Z, Sun Y, Tian Y. Pressure Control of the Structure and Multiferroicity in a Hydrogen-Bonded Metal-Organic Framework. Inorg Chem 2022; 61:9631-9637. [PMID: 35696435 DOI: 10.1021/acs.inorgchem.2c01083] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multiferroic materials with the cross-coupling of magnetic and ferroelectric orders provide a new platform for physics study and designing novel electronic devices. However, the weak coupling strength of ferroelectricity and magnetism is the main obstacle for potential applications. The recent research focuses on enhancing the coupling effect via synthesizing novel materials in a chemical route or tuning the multiferroicity in the physical way. Among them, pressure is an effective method to modify multiferroic materials, especially when the chemical doping has reached its tuning limit. In this work, we systemically studied the multiferroic properties in a hydrogen-bonded metal-organic framework (MOF) [(CH3)2NH2]Ni(HCOO)3 under high pressure. X-ray diffraction and Raman scattering reveal that a structural phase transition occurs in a pressure region of 6-9 GPa, and the crystal structure is greatly modified by pressure. With the ac magnetic susceptibility, pyroelectric current, and dielectric constant measurements, we obtain the multiferroic property evolution under high pressure and create a temperature-pressure phase diagram. Our study demonstrates that the pressure can modify the magnetic superexchange interaction and hydrogen bonding simultaneously in these perovskite-like MOFs. The multiferroic phase region has been expanded to higher temperature due to the pressure-enhanced spin-phonon coupling effect.
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Affiliation(s)
- Houjian Zhou
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Hao Ding
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhipeng Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tongtong Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyu Xue
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lin Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Young Sun
- Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China
| | - Yongjun Tian
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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13
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Abstract
Federated learning is a novel framework that enables resource-constrained edge devices to jointly learn a model, which solves the problem of data protection and data islands. However, standard federated learning is vulnerable to Byzantine attacks, which will cause the global model to be manipulated by the attacker or fail to converge. On non-iid data, the current methods are not effective in defensing against Byzantine attacks. In this paper, we propose a Byzantine-robust framework for federated learning via credibility assessment on non-iid data (BRCA). Credibility assessment is designed to detect Byzantine attacks by combing adaptive anomaly detection model and data verification. Specially, an adaptive mechanism is incorporated into the anomaly detection model for the training and prediction of the model. Simultaneously, a unified update algorithm is given to guarantee that the global model has a consistent direction. On non-iid data, our experiments demonstrate that the BRCA is more robust to Byzantine attacks compared with conventional methods.
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Affiliation(s)
- Kun Zhai
- Key Laboratory of Embedded System and Service Computing (Tongji University), Ministry of Education, Shanghai 201804, China
| | - Qiang Ren
- Key Laboratory of Embedded System and Service Computing (Tongji University), Ministry of Education, Shanghai 201804, China
| | - Junli Wang
- Key Laboratory of Embedded System and Service Computing (Tongji University), Ministry of Education, Shanghai 201804, China
| | - Chungang Yan
- Key Laboratory of Embedded System and Service Computing (Tongji University), Ministry of Education, Shanghai 201804, China
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14
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Chang Y, Li P, Li L, Chang S, Huo Y, Mu C, Nie A, Xiang J, Xue T, Zhai K, Wang B, Zhao Z, Yu D, Wen F, Liu Z, Tian Y. In Situ Grown Ultrafine RuO 2 Nanoparticles on GeP 5 Nanosheets as the Electrode Material for Flexible Planar Micro-Supercapacitors with High Specific Capacitance and Cyclability. ACS Appl Mater Interfaces 2021; 13:47560-47571. [PMID: 34597012 DOI: 10.1021/acsami.1c12549] [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: 05/20/2023]
Abstract
GeP5, as the most representative phosphorus-based material in two-dimensional layered phosphorous compounds, has shown a fairly bright application prospect in the field of energy storage because of its ultrahigh electrical conductivity. However, high-yield exfoliation methods and effective structure construction strategies for GeP5 nanosheets are still missing, which completely restricts the further application of GeP5-based nanocomposites. Here, we not only improved the yield of GeP5 nanosheets by a liquid nitrogen-assisted liquid-phase exfoliation technique but also constructed the GeP5@RuO2 nanocomposites with the 0D/2D heterostructure by in situ introduction of ultrafine RuO2 nanoparticles on highly conductive GeP5 nanosheets using a simple hydrothermal synthesis method, and then applying it to micro-supercapacitors (MSCs) as electrode materials through a mask-assisted vacuum filtration technique. It is precisely because of the synergy of the electrical double-layer material, GeP5 nanosheets and the pseudocapacitance material RuO2 nanoparticles that endows the GeP5@RuO2 electrode with outstanding electrochemical performance in micro-supercapacitors with a large specific capacitance of 129.5 mF cm-2/107.9 F cm-3, high energy density of 17.98 μWh cm-2, remarkable long-term cycling stability with 98.4% capacitance retention after 10 000 cycles, the exceptional mechanical stability, outstanding environmental stability, and excellent integration features. This work opens up a new avenue to construct GeP5-based nanocomposites as a most promising novel electrode material for practical application in flexible portable/wearable micro-nanoelectronic devices.
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Affiliation(s)
- Yukai Chang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Penghui Li
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lei Li
- Northwest Institute for Non-ferrous Metal Research, Xian 710016, China
| | - Shaopeng Chang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yingjie Huo
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Anmin Nie
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyu Xue
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Zhisheng Zhao
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Dongli Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yongjun Tian
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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15
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Wang P, Li W, Lu Z, Xiong W, Zhai K, Xiang D. One-step Simultaneous Quantitative Detection of Three Pesticides Based on Bimetallic Organic Framework Nanomaterials and Aptamers. ANAL SCI 2021; 38:299-305. [PMID: 34544925 DOI: 10.2116/analsci.21p204] [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: 07/05/2021] [Accepted: 09/13/2021] [Indexed: 11/23/2022]
Affiliation(s)
- Peng Wang
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
| | - Wenheng Li
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
| | - Zijing Lu
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
| | - Weiwei Xiong
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
| | - Kun Zhai
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
| | - Dongshan Xiang
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University.,School of Chemical and Environmental Engineering, Hubei Minzu University
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16
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Lu Z, Wang P, Xiong W, Qi B, Shi R, Xiang D, Zhai K. Simultaneous detection of mercury (II), lead (II) and silver (I) based on fluorescently labelled aptamer probes and graphene oxide. Environ Technol 2021; 42:3065-3072. [PMID: 31973648 DOI: 10.1080/09593330.2020.1721565] [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: 08/25/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
We have developed a fluorescence quantitative analysis method for the simultaneous detection of Hg2+, Pb2+ and Ag+ based on fluorescently labelled nucleic acid aptamer probes and graphene oxide (GO). By this method, three nucleic acid aptamer probes (PHg, PPb, PAg) were designed. The carboxyl fluorescein (FAM), tetramethyl-6-carboxyrhodamine (TAMRA) and cyanine-5 (Cy-5) were respectively selected as fluorophore of aptamer probes, and GO was chosen as quencher. In general, these probes were on free single-stranded state and adsorbed on the surface of GO via π-π interactions, which brought fluorophores of probes and GO into close proximity. Due to the fluorescence resonance energy transfer occurred between fluorophores and GO, the fluorescence was quenched and fluorescence signals were all weak. Under the optimal condition, fluorescence intensities of three fluorophores exhibited a good linear dependence on corresponding ions concentration. The detection limit for Hg2+, Pb2+ and Ag+ were 0.2, 0.5 and 2 nmol/L (3σ, n = 11). Average recoveries of this method were 97.56-104.92%, which indicated the method had a high accuracy and low detection limit. In addition, this proposed method has good selectivity, and there was no crosstalk effect among these probes.
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Affiliation(s)
- Zijing Lu
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
| | - Peng Wang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
| | - Weiwei Xiong
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
| | - Baoping Qi
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
| | - Rujie Shi
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, People's Republic of China
| | - Dongshan Xiang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
| | - Kun Zhai
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, People's Republic of China
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, People's Republic of China
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17
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Liu L, Ye K, Lin C, Jia Z, Xue T, Nie A, Cheng Y, Xiang J, Mu C, Wang B, Wen F, Zhai K, Zhao Z, Gong Y, Liu Z, Tian Y. Grain-boundary-rich polycrystalline monolayer WS 2 film for attomolar-level Hg 2+ sensors. Nat Commun 2021; 12:3870. [PMID: 34162881 PMCID: PMC8222231 DOI: 10.1038/s41467-021-24254-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 11/09/2020] [Accepted: 05/10/2021] [Indexed: 01/06/2023] Open
Abstract
Emerging two-dimensional (2D) layered materials have been attracting great attention as sensing materials for next-generation high-performance biological and chemical sensors. The sensor performance of 2D materials is strongly dependent on the structural defects as indispensable active sites for analyte adsorption. However, controllable defect engineering in 2D materials is still challenging. In the present work, we propose exploitation of controllably grown polycrystalline films of 2D layered materials with high-density grain boundaries (GBs) for design of ultra-sensitive ion sensors, where abundant structural defects on GBs act as favorable active sites for ion adsorption. As a proof-of-concept, our fabricated surface plasmon resonance sensors with GB-rich polycrystalline monolayer WS2 films have exhibited high selectivity and superior attomolar-level sensitivity in Hg2+ detection owing to high-density GBs. This work provides a promising avenue for design of ultra-sensitive sensors based on GB-rich 2D layered materials.
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Affiliation(s)
- Lixuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China.,School of Materials Science and Engineering, Beihang University, Beijing, People's Republic of China
| | - Kun Ye
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Changqing Lin
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, China
| | - Zhiyan Jia
- International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of Education, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, People's Republic of China.,International Iberian Nanotechnology Laboratory (INL), Avenida Mestre José Veiga, Braga, Portugal
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China.
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China.
| | - Yingchun Cheng
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, China
| | - Jianyong Xiang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Congpu Mu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Bochong Wang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Fusheng Wen
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Zhisheng Zhao
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
| | - Yongji Gong
- School of Materials Science and Engineering, Beihang University, Beijing, People's Republic of China.
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China.
| | - Yongjun Tian
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, People's Republic of China
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18
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Kang M, Lin C, Yang H, Guo Y, Liu L, Xue T, Liu Y, Gong Y, Zhao Z, Zhai T, Zhai K, Nie A, Cheng Y, Liu Z. Proximity Enhanced Hydrogen Evolution Reactivity of Substitutional Doped Monolayer WS 2. ACS Appl Mater Interfaces 2021; 13:19406-19413. [PMID: 33856757 DOI: 10.1021/acsami.1c00139] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The development of stable and low-cost catalysts with high reactivity to replace Pt-based ones is the central focus but challenging for hydrogen evolution reaction (HER). The incorporation of single atoms into two-dimensional (2D) supports has been demonstrated as an effective strategy because of the highly active single atomic sites and extremely large surface area of two-dimensional materials. However, the doping of single atoms is normally performed on the surface suffering from low stability, especially in acidic media. Moreover, it is experimentally challenging to produce monolayered 2D materials with atomic doping. Here, we propose a strategy to incorporate single foreign Fe atoms to substitute W atoms in sandwiched two-dimensional WS2. Because of the charge transfer between the doped Fe atom and its neighboring S atoms on the surface, the proximate S atoms become active for HER. Our theoretical prediction is later verified experimentally, showing an enhanced catalytic reactivity of Fe-doped WS2 in HER with the Volmer-Heyrovsky mechanism involved. We refer to this strategy as proximity catalysis, which is expected to be extendable to more sandwiched two-dimensional materials as substrates and transition metals as dopants.
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Affiliation(s)
- Mengke Kang
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Changqing Lin
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), Xi'an 710129, China
| | - Huan Yang
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Yabin Guo
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Lixuan Liu
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Tianyu Xue
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Youwen Liu
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Yongji Gong
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Zhisheng Zhao
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyou Zhai
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Kun Zhai
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Anmin Nie
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yingchun Cheng
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), Xi'an 710129, China
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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19
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Roche T, Romero J, Zhai K, Granstedt E, Gota H, Putvinski S, Smirnov A, Binderbauer MW. The integrated diagnostic suite of the C-2W experimental field-reversed configuration device and its applications. Rev Sci Instrum 2021; 92:033548. [PMID: 33820036 DOI: 10.1063/5.0043807] [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] [Received: 01/11/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
In the current experimental device of TAE Technologies, C-2W (also called "Norman"), record breaking advanced beam-driven field-reversed configuration (FRC) plasmas are produced and sustained in steady state utilizing variable energy neutral beams (15-40 keV, total power up to 20 MW), advanced divertors, bias electrodes, and an active plasma control system. This fully operational experiment is coupled with a fully operational suite of advanced diagnostic systems. The suite consists of 60+ individual systems spanning 20 categories, including magnetic sensors, Thomson scattering, interferometry/polarimetry, spectroscopy, fast imaging, bolometry, reflectometry, charged and neutral particle analysis, fusion product detection, and electric probes. Recently, measurements of main ion temperatures via a diagnostic neutral beam, axial profiles of energy flux from an array of bolometers, and divertor and edge plasma parameters via an extensive set of electric probes, interferometers, and spectrometers have all been made available. All the diagnostics work together to provide a complete picture of the FRC, fast-ion inventory, and edge plasma details enabling tomographic reconstruction of plasma parameter profiles and real-time plasma control.
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Affiliation(s)
- T Roche
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - J Romero
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - K Zhai
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - E Granstedt
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - H Gota
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - S Putvinski
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - A Smirnov
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - M W Binderbauer
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
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20
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Yu Z, Liu C, Shen Z, Zhai K, Xu D, Nie A, Xiang J, Wen F, Mu C, Wang B, Wang L, Wang L, Liu Z, Tian Y. Pressure Effect on Order-Disorder Ferroelectric Transition in a Hydrogen-Bonded Metal-Organic Framework. J Phys Chem Lett 2020; 11:9566-9571. [PMID: 33119325 DOI: 10.1021/acs.jpclett.0c02943] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Perovskite-like ABX3 metal-organic frameworks (MOFs) have gathered great interest due to their intriguing chemical and physical properties, including their magnetism, ferroelectricity, and multiferroicity. Pressure is an effective thermal parameter in tuning related properties in MOFs due to the adjustable organic framework. Though spectrum experiments have been made on the structural evolution during decompression, there is a lack of electrical studies on the order-disorder ferroelectric transition in the metal-organic frameworks under pressure. In this work, we use a static pyroelectric current measurement, a dynamic dielectric method combined with a Raman scattering technique with applying in situ pressure, to explore the order-disorder ferroelectric transition in [(CH3)2NH2]Co(HCOO)3. The ferroelectric transition vanishes around the external pressure of 1.6 GPa, emerging with a new paraelectric phase. Another phase transition was observed at 6.32 GPa, mainly associated with the distortive transition of DMA+ cations. A phenomenological theory of ferroelectricity vanishing at 1.6 GPa for [(CH3)2NH2]Co(HCOO)3 is also discussed. Our study gives a comprehensive understanding in the pressure tuning of ferroelectric properties in hybrid inorganic-organic materials.
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Affiliation(s)
- Zhipeng Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Chao Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhiwei Shen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Di Xu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Anmin Nie
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Limin Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lin Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yongjun Tian
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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21
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Lu Z, Jiang Y, Wang P, Xiong W, Qi B, Zhang Y, Xiang D, Zhai K. Bimetallic organic framework-based aptamer sensors: a new platform for fluorescence detection of chloramphenicol. Anal Bioanal Chem 2020; 412:5273-5281. [PMID: 32514850 DOI: 10.1007/s00216-020-02737-y] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/05/2020] [Accepted: 05/25/2020] [Indexed: 12/25/2022]
Abstract
A fluorescence method for the quantitative detection of chloramphenicol (CAP) has been developed using phosphate and fluorescent dye 6-carboxy-x-rhodamine (ROX) double-labeled aptamers of CAP and the bimetallic organic framework nanomaterial Cu/UiO-66. Cu/UiO-66 was prepared by coordinate bonding of metal organic framework (MOF) nanomaterial UiO-66 with copper ions. Cu/UiO-66 contains a large number of metal defect sites, which can be combined with phosphate-modified nucleic acid aptamers through strong coordination between phosphate and zirconium to form "fluorescence turn-on" sensors. In the absence of CAP, all single-stranded aptamers were adsorbed on the surface of Cu/UiO-66 through π-π stacking between single-stranded DNA and Cu/UiO-66, which brings the ROX fluorophores and Cu/UiO-66 into close proximity. The ROX fluorescence of aptamers was then quenched by Cu/UiO-66 through photoinduced electron transfer (PET). In the presence of CAP, however, CAP reacted with nucleic acid aptamers to form a special spatial structure, in which the ROX fluorophores were far away from the MOF surface via a change in the spatial structure of the aptamers, and the fluorescence of ROX was able to be recovered. The quantitative detection of CAP can be achieved by measuring the fluorescence signal of ROX using synchronous scanning fluorescence spectrometry. Under optimum conditions, the fluorescence intensities of ROX exhibit a good linear dependence on the concentration of CAP in the range of 0.2-10 nmol/L, with a detection limit of 0.09 nmol/L. The method has advantages of high sensitivity, good selectivity, and a low limit of detection. Graphical abstract.
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Affiliation(s)
- Zijing Lu
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Yansong Jiang
- College of Chemistry, Jilin University, Changchun, 130012, Jilin, China
| | - Peng Wang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Weiwei Xiong
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Baoping Qi
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China
| | | | - Dongshan Xiang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China. .,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China.
| | - Kun Zhai
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China. .,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China.
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22
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Burn DM, Zhang S, Zhai K, Chai Y, Sun Y, van der Laan G, Hesjedal T. Mode-Resolved Detection of Magnetization Dynamics Using X-ray Diffractive Ferromagnetic Resonance. Nano Lett 2020; 20:345-352. [PMID: 31855436 DOI: 10.1021/acs.nanolett.9b03989] [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] [Indexed: 06/10/2023]
Abstract
Collective spin excitations of ordered magnetic structures offer great potential for the development of novel spintronic devices. The present approach relies on micromagnetic models to explain the origins of dynamic modes observed by ferromagnetic resonance (FMR) studies, since experimental tools to directly reveal the origins of the complex dynamic behavior are lacking. Here we demonstrate a new approach which combines resonant magnetic X-ray diffraction with FMR, thereby allowing for a reconstruction of the real-space spin dynamics of the system. This new diffractive FMR technique builds on X-ray detected FMR that allows for element-selective dynamic studies, giving unique access to specific wave components of static and dynamic coupling in magnetic heterostructures. In combination with diffraction, FMR is elevated to the level of a modal spectroscopy technique, potentially opening new pathways for the development of spintronic devices.
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Affiliation(s)
- David M Burn
- Magnetic Spectroscopy Group , Diamond Light Source , Didcot OX11 0DE , United Kingdom
| | - Shilei Zhang
- School of Physical Science and Technology , ShanghaiTech University , Shanghai , 201210 , China
- ShanghaiTech Laboratory for Topological Physics , ShanghaiTech University , Shanghai 200031 , China
| | - Kun Zhai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics , Chinese Academy of Sciences , Beijing 100190 , China
- School of Physical Science , University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Yisheng Chai
- Low Temperature Physics Laboratory, College of Physics, and Center of Quantum Materials and Devices , Chongqing University , Chongqing 401331 , China
| | - Young Sun
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics , Chinese Academy of Sciences , Beijing 100190 , China
- School of Physical Science , University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Gerrit van der Laan
- Magnetic Spectroscopy Group , Diamond Light Source , Didcot OX11 0DE , United Kingdom
| | - Thorsten Hesjedal
- Clarendon Laboratory, Department of Physics , University of Oxford , Parks Road , Oxford OX1 3PU , United Kingdom
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23
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Yang R, Liu L, Feng S, Liu Y, Li S, Zhai K, Xiang J, Mu C, Nie A, Wen F, Wang B, Zhang G, Gong Y, Zhao Z, Tian Y, Liu Z. One-Step Growth of Spatially Graded Mo 1- xW xS 2 Monolayers with a Wide Span in Composition (from x = 0 to 1) at a Large Scale. ACS Appl Mater Interfaces 2019; 11:20979-20986. [PMID: 31119937 DOI: 10.1021/acsami.9b03608] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Alloying is an effective way to modulate material's properties. In particular, graded alloying within a single domain of two-dimensional transition-metal chalcogenide (2D-TMC) is of great technological importance, for example, for achieving band gap modulations. Here, we report a facile method to grow gradient alloying of Mo1- xW xS2 monolayers with large domain sizes and high crystal qualities via the chemical vapor deposition technique. The as-grown Mo1- xW xS2 monolayers have a gradient composition of W from x = ∼0 to ∼1 in a single domain with a lateral dimension up to 300 μm, and the span in band gap can be readily tuned. Owing to the grading in band offsets, the compositionally graded Mo1- xW xS2 alloy monolayer demonstrates an excellent rectifying effect with the ratio of forward to reverse current up to ∼104. Moreover, phototransistors based on the compositionally graded Mo1- xW xS2 monolayers exhibit a high responsivity up to 298.4 A/W in the visible light regime, and particularly a decent responsivity of 28.7 A/W in the near-infrared regime. The control of band gap offset gradient and span in alloyed 2D-TMC semiconductors provides an additional degree of freedom in designing fascinating applications in achieving multifunctional optoelectronic devices on individual substrates.
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Affiliation(s)
- Ruilong Yang
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Lixuan Liu
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
- School of Materials Science and Engineering , Beihang University , Beijing 100083 , People's Republic of China
| | - Shanghuai Feng
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Yujie Liu
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Songlin Li
- School of Electronic Science and Engineering , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Kun Zhai
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Jianyong Xiang
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Congpu Mu
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Anmin Nie
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Fusheng Wen
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Bochong Wang
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Guangyu Zhang
- CAS Key Laboratory of Nanoscale Physics and Devices, Institute of Physics , Chinese Academy of Sciences , Beijing 100190 , China
| | - Yongji Gong
- School of Materials Science and Engineering , Beihang University , Beijing 100083 , People's Republic of China
| | - Zhisheng Zhao
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Yongjun Tian
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
| | - Zhongyuan Liu
- State Key Laboratory of Metastable Materials Science and Technology , Yanshan University , Qinhuangdao 066004 , People's Republic of China
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24
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Zhai K, Schindler T, Ottaviano A, Zhang H, Fallah D, Wells J, Parke E, Thompson MC. Thomson scattering systems on C-2W field-reversed configuration plasma experiment. Rev Sci Instrum 2018; 89:10C118. [PMID: 30399708 DOI: 10.1063/1.5037327] [Citation(s) in RCA: 2] [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: 04/23/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
TAE Technologies' newly constructed C-2W experiment aims to improve the ion and electron temperatures in a sustained field-reversed configuration plasma. A suite of Thomson scattering systems has been designed and constructed for electron temperature and density profile measurements. The systems are designed for electron densities of 1 × 1012 cm-3 to 2 × 1014 cm-3 and temperature ranges from 10 eV to 2 keV. The central system will provide profile measurements of Te and ne at 16 radial locations from r = -9 cm to r = 64 cm with a temporal resolution of 20 kHz for 4 pulses or 1 kHz for 30 pulses. The jet system will provide profile measurements of Te and ne at 5 radial locations in the open field region from r = -5 cm to r = 15 cm with a temporal resolution of 100 Hz. The central system and its components have been characterized, calibrated, installed, and commissioned. A maximum-likelihood algorithm has been applied for data processing and analysis.
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Affiliation(s)
- K Zhai
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Schindler
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - A Ottaviano
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - H Zhang
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - D Fallah
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - J Wells
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Parke
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M C Thompson
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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25
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Ottaviano A, Schindler TM, Zhai K, Parke E, Granstedt E, Thompson MC. Characterization and calibration of the Thomson scattering diagnostic suite for the C-2W field-reversed configuration experiment. Rev Sci Instrum 2018; 89:10C120. [PMID: 30399673 DOI: 10.1063/1.5037101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
Abstract
The new C-2W Thomson scattering (TS) diagnostic consists of two individual subsystems for monitoring electron temperature (Te) and density (ne): one system in the central region is currently operational, and the second system is being commissioned to monitor the open field line region. Validating the performance of the TS's custom designed system components and unique calibration of the detection system and diagnostic as a whole is crucial to obtaining high precision Te and ne profiles of C-2W's plasma. The major components include a diode-pumped Nd:YAG laser which produces 35 pulses at up to 20 kHz, uniquely designed collection lenses with a fast numerical aperture, and uniquely designed polychromators with filters sets to optimize a Te ranging from 10 eV to 2 keV. This paper describes the design principles and techniques used to characterize the main components of the TS diagnostic on C-2W, as well as the results of Rayleigh scattering calibrations performed for the whole system response.
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Affiliation(s)
- A Ottaviano
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T M Schindler
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - K Zhai
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Parke
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Granstedt
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M C Thompson
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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26
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Cong J, Zhai K, Chai Y, Shang D, Khalyavin DD, Johnson RD, Kozlenko DP, Kichanov SE, Abakumov AM, Tsirlin AA, Dubrovinsky L, Xu X, Sheng Z, Ovsyannikov SV, Sun Y. Spin-induced multiferroicity in the binary perovskite manganite Mn 2O 3. Nat Commun 2018; 9:2996. [PMID: 30065294 PMCID: PMC6068161 DOI: 10.1038/s41467-018-05296-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 11/06/2017] [Accepted: 05/01/2018] [Indexed: 11/10/2022] Open
Abstract
The ABO3 perovskite oxides exhibit a wide range of interesting physical phenomena remaining in the focus of extensive scientific investigations and various industrial applications. In order to form a perovskite structure, the cations occupying the A and B positions in the lattice, as a rule, should be different. Nevertheless, the unique binary perovskite manganite Mn2O3 containing the same element in both A and B positions can be synthesized under high-pressure high-temperature conditions. Here, we show that this material exhibits magnetically driven ferroelectricity and a pronounced magnetoelectric effect at low temperatures. Neutron powder diffraction revealed two intricate antiferromagnetic structures below 100 K, driven by a strong interplay between spin, charge, and orbital degrees of freedom. The peculiar multiferroicity in the Mn2O3 perovskite is ascribed to a combined effect involving several mechanisms. Our work demonstrates the potential of binary perovskite oxides for creating materials with highly promising electric and magnetic properties. Multiferroic binary oxides with the perovskite structure have been very rare. Here, Cong et al. report magnetically-driven ferroelectricity and a large magnetoelectric effect in a binary perovskite compound Mn2O3 at low temperatures.
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Affiliation(s)
- Junzhuang Cong
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Kun Zhai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yisheng Chai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dashan Shang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dmitry D Khalyavin
- ISIS Facility, Rutherford Appleton Laboratory-STFC, Chilton, Didcot, OX11 0QX, UK
| | - Roger D Johnson
- Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK
| | - Denis P Kozlenko
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
| | - Sergey E Kichanov
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
| | - Artem M Abakumov
- Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology, Nobel Street 3, 143026, Moscow, Russia
| | - Alexander A Tsirlin
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135, Augsburg, Germany
| | - Leonid Dubrovinsky
- Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
| | - Xueli Xu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Zhigao Sheng
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Sergey V Ovsyannikov
- Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany. .,Institute for Solid State Chemistry, Russian Academy of Sciences, Urals Division, 91 Pervomayskaya Str., Yekaterinburg, 620990, Russia.
| | - Young Sun
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. .,School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China.
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Lv XM, Song JS, Li J, Zhai K. Reduction of excess sludge in a sequencing batch reactor by lysis-cryptic growth using quick lime for disintegration under low temperature. Environ Technol 2017; 38:1835-1842. [PMID: 27691718 DOI: 10.1080/09593330.2016.1238514] [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: 03/14/2016] [Accepted: 09/04/2016] [Indexed: 06/06/2023]
Abstract
In the present study, quick-lime-based thermal-alkaline sludge disintegration (SD) under low temperature was combined with cryptic growth to investigate the excess sludge reduction efficiency in the sequencing batch reactor (SBR). The optimized condition of SD was as follows: T = 80℃, pH = 11, t = 180 min, and the SD rate was about 42.1%. With 65.6% of excess sludge disintegrated and returned to the SBR, the system achieved sludge reduction rate of about 40.1%. The lysis-cryptic growth still obtained satisfactory sludge reduction efficiency despite the comparative low SD rate, which suggested that disintegration rate might not be the decisive factor for cryptic-growth-based sludge reduction. Lysis-cryptic growth did not impact the effluent quality, yet the phosphorus removal performance was enhanced, with effluent total phosphorus concentration decreased by 0.3 mg/L (33%). Crystal compounds of calcium phosphate precipitate were detected in the system by Fourier transform infrared spectroscopy and X-ray diffraction, which indicated the phosphorus removal potential of SD using lime. Moreover, endogenous dehydrogenase activity of activated sludge in the lysis-cryptic system was enhanced, which was beneficial for sludge reduction. SD and cryptic growth in the present study demonstrates an economical and effective approach for sludge reduction.
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Affiliation(s)
- Xiao-Mei Lv
- a Environmental Science and Engineering Center , Harbin Institute of Technology Shenzhen Graduate School , Shenzhen , People's Republic of China
- b Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control , Shenzhen , People's Republic of China
- c Shenzhen Public Technological Service Platform for Urban Waste Energy Regeneration , Shenzhen , People's Republic of China
| | - Ju-Sheng Song
- d Urban and Landscape Planning Research Center , Harbin Institute of Technology Shenzhen Graduate School , Shenzhen , People's Republic of China
| | - Ji Li
- a Environmental Science and Engineering Center , Harbin Institute of Technology Shenzhen Graduate School , Shenzhen , People's Republic of China
- b Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control , Shenzhen , People's Republic of China
- c Shenzhen Public Technological Service Platform for Urban Waste Energy Regeneration , Shenzhen , People's Republic of China
| | - Kun Zhai
- a Environmental Science and Engineering Center , Harbin Institute of Technology Shenzhen Graduate School , Shenzhen , People's Republic of China
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Xia M, Zhai K, Lu J, Sun Y, Li RK. Orthoborates LiCdRE 5(BO 3) 6 (RE = Sm-Lu and Y) with Rare-Earth Ions on a Triangular Lattice: Synthesis, Crystal Structure, and Optical and Magnetic Properties. Inorg Chem 2017; 56:8100-8105. [PMID: 28661669 DOI: 10.1021/acs.inorgchem.7b00756] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Single crystals of LiCdY5(BO3)6 were successfully grown from a Li2O-B2O3 flux, and its lanthanide homotypic compounds, LiCdRE5(BO3)6 (RE = Sm-Lu), have been prepared by solid-state reaction. They crystallize in the noncentrosymmetric space group P6522 with cell parameters in the ranges of a = 7.0989(2)-6.9337(1) Å and c = 25.9375(1)-24.8960(6) Å. As a representative example, LiCdY5(BO3)6 features a triangular lattice in the ab plane composed of three distinct crystallographic Y sites. The triangular lattices spaced with the same distance of [Formula: see text]c are further stacked to build three-dimensional frameworks by reinforcement of the isolated planar BO3 groups and distorted LiO4 tetrahedra. Magnetic measurements show that Eu and Sm compounds exhibit typical Van Vleck-type paramagnetism and other rare-earth borates show weak antiferromagnetic behavior. In addition, UV-vis-near-IR diffuse-reflectance and photoluminescence spectra were performed to understand the transition energy levels of active rare-earth ions and their relationships to magnetism.
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Affiliation(s)
- Mingjun Xia
- Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Kun Zhai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Jun Lu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Young Sun
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - R K Li
- Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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Wu Y, Zhai K, Tian W, Sun Y, Cao H, Wang F. Investigation on a giant magnetoelectric effect hexaferrite via neutron scattering techniques. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s0108767317099597] [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: 04/03/2023] Open
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Anderson DT, Abdou A, Almagri AF, Anderson FSB, Canik JM, Guttenfelder W, Lechte C, Likin KM, Lu H, Oh S, Probert PH, Radder J, Sakaguchi V, Schmitt J, Talmadge JN, Zhai K, Brower DL, Deng C. Overview of Recent Results from HSX. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. T. Anderson
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - A. Abdou
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - A. F. Almagri
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - F. S. B. Anderson
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. M. Canik
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - W. Guttenfelder
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - C. Lechte
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - K. M. Likin
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - H. Lu
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - S. Oh
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - P. H. Probert
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. Radder
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - V. Sakaguchi
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. Schmitt
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. N. Talmadge
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - K. Zhai
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - D. L. Brower
- University of California-Los Angeles, Electrical Engineering Department 66-127J Engineering IV Building, Los Angeles, California 90095-1594
| | - C. Deng
- University of California-Los Angeles, Electrical Engineering Department 66-127J Engineering IV Building, Los Angeles, California 90095-1594
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Gota H, Tuszewski M, Trask E, Garate E, Binderbauer MW, Tajima T, Schmitz L, Deng BH, Guo HY, Aefsky S, Allfrey I, Barnes D, Bolte N, Bui DQ, Ceccherini F, Clary R, Conroy KD, Cordero M, Dettrick SA, Douglass JD, Feng P, Granstedt E, Gupta D, Gupta S, Hooper C, Kinley JS, Knapp K, Korepanov S, Longman A, Magee R, Mendoza R, Mok Y, Necas A, Primavera S, Putvinski S, Onofri M, Osin D, Rath N, Roche T, Romero J, Rostoker N, Schroeder JH, Sevier L, Sibley A, Smirnov A, Song Y, Steinhauer LC, Thompson MC, Valentine T, Van Drie AD, Walters JK, Waggoner W, Yang X, Yushmanov P, Zhai K. Improved Confinement of C-2 Field-Reversed Configuration Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Schmitz
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
- University of California, Los Angeles, Department of Physics and Astronomy Los Angeles, California 90095
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - I. Allfrey
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Bolte
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - F. Ceccherini
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Cordero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Feng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Granstedt
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - C. Hooper
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Magee
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Putvinski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Onofri
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rath
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Roche
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. Romero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. C. Steinhauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Valentine
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - W. Waggoner
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - X. Yang
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Yushmanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
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Hu C, Deng Y, Hu H, Duan Y, Zhai K. Adsorption and intercalation of low and medium molar mass chitosans on/in the sodium montmorillonite. Int J Biol Macromol 2016; 92:1191-1196. [DOI: 10.1016/j.ijbiomac.2016.08.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 10/21/2022]
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Zhai K, Schindler T, Kinley J, Deng B, Thompson MC. The upgrade of the Thomson scattering system for measurement on the C-2/C-2U devices. Rev Sci Instrum 2016; 87:11D602. [PMID: 27910634 DOI: 10.1063/1.4955496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The C-2/C-2U Thomson scattering system has been substantially upgraded during the latter phase of C-2/C-2U program. A Rayleigh channel has been added to each of the three polychromators of the C-2/C-2U Thomson scattering system. Onsite spectral calibration has been applied to avoid the issue of different channel responses at different spots on the photomultiplier tube surface. With the added Rayleigh channel, the absolute intensity response of the system is calibrated with Rayleigh scattering in argon gas from 0.1 to 4 Torr, where the Rayleigh scattering signal is comparable to the Thomson scattering signal at electron densities from 1 × 1013 to 4 × 1014 cm-3. A new signal processing algorithm, using a maximum likelihood method and including detailed analysis of different noise contributions within the system, has been developed to obtain electron temperature and density profiles. The system setup, spectral and intensity calibration procedure and its outcome, data analysis, and the results of electron temperature/density profile measurements will be presented.
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Affiliation(s)
- K Zhai
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - T Schindler
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - J Kinley
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - B Deng
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - M C Thompson
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
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Shen J, Cong J, Shang D, Chai Y, Shen S, Zhai K, Sun Y. A multilevel nonvolatile magnetoelectric memory. Sci Rep 2016; 6:34473. [PMID: 27681812 PMCID: PMC5041080 DOI: 10.1038/srep34473] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 05/25/2016] [Accepted: 09/14/2016] [Indexed: 11/09/2022] Open
Abstract
The coexistence and coupling between magnetization and electric polarization in multiferroic materials provide extra degrees of freedom for creating next-generation memory devices. A variety of concepts of multiferroic or magnetoelectric memories have been proposed and explored in the past decade. Here we propose a new principle to realize a multilevel nonvolatile memory based on the multiple states of the magnetoelectric coefficient (α) of multiferroics. Because the states of α depends on the relative orientation between magnetization and polarization, one can reach different levels of α by controlling the ratio of up and down ferroelectric domains with external electric fields. Our experiments in a device made of the PMN-PT/Terfenol-D multiferroic heterostructure confirm that the states of α can be well controlled between positive and negative by applying selective electric fields. Consequently, two-level, four-level, and eight-level nonvolatile memory devices are demonstrated at room temperature. This kind of multilevel magnetoelectric memory retains all the advantages of ferroelectric random access memory but overcomes the drawback of destructive reading of polarization. In contrast, the reading of α is nondestructive and highly efficient in a parallel way, with an independent reading coil shared by all the memory cells.
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Affiliation(s)
- Jianxin Shen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Junzhuang Cong
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Dashan Shang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yisheng Chai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shipeng Shen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Kun Zhai
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Young Sun
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
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Qian WF, Yan WC, Wang TQ, Shao XD, Zhai K, Han LF, Lv CC. Genetic characterization of Toxoplasma gondii from domestic animals in central China. Trop Biomed 2015; 32:540-544. [PMID: 26695215] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Toxoplasma gondii is an obligate intracellular parasite that has a remarkable ability to infect almost all warm-blooded animals, including humans. This study was aimed to determine the genetic characteristics of T. gondii isolates from domestic animals in Henan Province, central China. A total of 363 DNA samples, including 208 from hilar lymph nodes of pigs, 36 from blood samples of cats, 12 from tissues of aborted bovine fetuses and 107 from blood samples of dams with history of abortion in Henan Province, were examined for the presence of T. gondii by nested PCR based on B1 gene. The positive DNA samples were further genotyped by PCR-RFLP at 11 markers, including SAG1, (3'+ 5') SAG2, alt.SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1, and Apico. DNA samples from 9 pigs, 5 cats, and 4 dairy cows were T. gondii B1 gene positive. Nine samples were successfully genotyped at all genetic loci, of which 5 samples from pigs, and 2 from cats were identified as ToxoDB genotype #9, and 2 samples from cows belonged to ToxoDB genotype #225. To our knowledge, the present study is the second report of genetic typing of T. gondii isolates from cattle in China, and the first report of T. gondii ToxoDB#225 from cattle.
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Affiliation(s)
- W F Qian
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - W C Yan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - T Q Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - X D Shao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - K Zhai
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - L F Han
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - C C Lv
- PuLike Biological Engineering Co., Ltd, Luoyang, China
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Hubert F, Belacel-Ouari M, Manoury B, Zhai K, Domergue-Dupont V, Mateo P, Joubert F, Fischmeister R, Leblais V. Alteration of vascular reactivity in heart failure: role of phosphodiesterases 3 and 4. Br J Pharmacol 2015; 171:5361-75. [PMID: 25048877 DOI: 10.1111/bph.12853] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 06/24/2014] [Accepted: 07/12/2014] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND AND PURPOSE This study examined the role of the main vascular cAMP-hydrolysing phosphodiesterases (cAMP-PDE) in the regulation of basal vascular tone and relaxation of rat aorta mediated by β-adrenoceptors, following heart failure (HF). EXPERIMENTAL APPROACH Twenty-two weeks after proximal aortic stenosis, to induce HF, or SHAM surgery in rats, we evaluated the expression, activity and function of cAMP-PDE in the descending thoracic aorta. KEY RESULTS HF rat aortas exhibited signs of endothelial dysfunction, with alterations of the NO pathway, and alteration of PDE3 and PDE4 subtype expression, without changing total aortic cAMP-hydrolytic activity and PDE1, PDE3 and PDE4 activities. Vascular reactivity experiments using PDE inhibitors showed that PDE3 and PDE4 controlled the level of PGF2α -stimulated contraction in SHAM aorta. PDE3 function was partially inhibited by endothelial NO, whereas PDE4 function required a functional endothelium and was under the negative control of PDE3. In HF, PDE3 function was preserved, but its regulation by endothelial NO was altered. PDE4 function was abolished and restored by PDE3 inhibition. In PGF2α -precontracted arteries, β-adrenoceptor stimulation-induced relaxation in SHAM aorta, which was abolished in the absence of functional endothelium, as well as in HF aortas, but restored after PDE3 inhibition in all unresponsive arteries. CONCLUSIONS AND IMPLICATIONS Our study underlines the key role of the endothelium in controlling the contribution of smooth muscle PDE to contractile function. In HF, endothelial dysfunction had a major effect on PDE3 function and PDE3 inhibition restored a functional relaxation to β-adrenoceptor stimulation.
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Affiliation(s)
- F Hubert
- Faculté de Pharmacie, Inserm UMR-S 769, LabEx LERMIT-DHU TORINO, Châtenay-Malabry, France; Faculté de Pharmacie, Université Paris-Sud, Châtenay-Malabry, France; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
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Xiang D, Zhai K, Xiang W, Wang L. Highly sensitive fluorescence quantitative detection of specific DNA sequences with molecular beacons and nucleic acid dye SYBR Green I. Talanta 2014; 129:249-53. [PMID: 25127591 DOI: 10.1016/j.talanta.2014.05.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 05/17/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
Abstract
A highly sensitive fluorescence method of quantitative detection for specific DNA sequence is developed based on molecular beacon (MB) and nucleic acid dye SYBR Green I by synchronous fluorescence analysis. It is demonstrated by an oligonucleotide sequence of wild-type HBV (target DNA) as a model system. In this strategy, the fluorophore of MB is designed to be 6-carboxyfluorescein group (FAM), and the maximum excitation wavelength and maximum emission wavelength are both very close to that of SYBR Green I. In the presence of targets DNA, the MBs hybridize with the targets DNA and form double-strand DNA (dsDNA), the fluorophore FAM is separated from the quencher BHQ-1, thus the fluorophore emit fluorescence. At the same time, SYBR Green I binds to dsDNA, the fluorescence intensity of SYBR Green I is significantly enhanced. When targets DNA are detected by synchronous fluorescence analysis, the fluorescence peaks of FAM and SYBR Green I overlap completely, so the fluorescence signal of system will be significantly enhanced. Thus, highly sensitive fluorescence quantitative detection for DNA can be realized. Under the optimum conditions, the total fluorescence intensity of FAM and SYBR Green I exhibits good linear dependence on concentration of targets DNA in the range from 2×10(-11) to 2.5×10(-9)M. The detection limit of target DNA is estimated to be 9×10(-12)M (3σ). Compared with previously reported methods of detection DNA with MB, the proposed method can significantly enhance the detection sensitivity.
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Affiliation(s)
- Dongshan Xiang
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Minzu University, Enshi 445000, China; School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, China
| | - Kun Zhai
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, China
| | - Wenjun Xiang
- Sichuan University of Arts and Science, Dazhou, 635000, China
| | - Lianzhi Wang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, China
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Zhai K, Gao G, Cao W, Zhao L, Fang X, Duan H. Simultaneous HPLC determination of four active compounds in fengshiding capsules, a chinese medicine. Indian J Pharm Sci 2014; 76:445-9. [PMID: 25425759 PMCID: PMC4243262] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 07/16/2014] [Accepted: 07/22/2014] [Indexed: 11/23/2022] Open
Abstract
A high performance liquid chromatography method was established for simultaneously determining four bioactive components, salicin, liquiritin, paeonolum, and imperatorin in Fengshiding capsule, a widely used traditional Chinese medicine for treating rheumatic disease. The chromatographic separation was performed on a Shimadzu Shim-pack Stable Bond C18 column using gradient elution with methanol and water. The analytical method was validated through precision, repeatability and stability, and the relative standard deviation values were less than 3%, respectively. The recoveries of the four investigated compounds ranged from 95.80 to 101.21% with relative standard deviation values less than 3.2%. Then this proposed method was successfully applied to determine six batches of Fengshiding commercial products of capsule dosage form from two pharmaceutical factories. This study might provide a basis for quality control for this traditional Chinese medicine preparation.
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Affiliation(s)
- K. Zhai
- Department of Complex Prescrition of TCM, China Pharmaceutical University, Nanjing-210 038, China
| | - G. Gao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - W. Cao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - L. Zhao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - X. Fang
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - H. Duan
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China,Address for correspondence E-mail:
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Xin Y, Ma L, Zhai K, Zhou Z, Yang X, Ma J, Wang Y, Zhu J, Jiang M, Huang Y. [Association between single nucleotide polymorphism in Wnt3 and nonsyndromic cleft lip with or without cleft palate in Hui and Han population of Ningxia Autonomous Region]. Hua Xi Kou Qiang Yi Xue Za Zhi 2013; 31:397-402. [PMID: 23991581] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To investigate the association between rs142167, rs7216231 single nucleotide polymorphism (SNP) in Wnt3 and nonsyndromic cleft lip and palate (NSCL/P) in Hui and Han population of Ningxia Autonomous Region. METHODS The study consisted of 371 NSCL/P patients from Ningxia Hui and Han population (Han population 166, Hui population 205), their parents (196 fathers, 224 mothers, 150 trios) and 258 normal controls (Han population 190, Hui population 68). Polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP) was used to identify rs142167, rs7216231 genotypes of the samples. The data was analyzed by case-control analysis, transmission disequilibrium test (TDT) and family based associated test (FBAT). RESULTS Case-control study showed that no differences in cleft lip, cleft palate, cleft lip and palate, and the total case group compared with the control group at rs142167 and rs7216231 (P > 0.05) in Hui and Han population and in stratified comparison. TDT test showed that rs142167 and rs7216231's allele had not over-transmitted (P > 0.05) in NSCL/P. FBAT test showed that G-G specific haplotypes showed statistically significant (P < 0.05). CONCLUSION Wnt3 gene polymorphism is not relevant with NSCL/ P in Ningxia Hui and Han population.
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Affiliation(s)
- Yanhua Xin
- College of Stomatology, Ningxia Medical University, Yinchuan 750004, China
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Abstract
We developed a multiplexed DNA detection method with a composite molecular beacon (MB) probe based on guanine-quenching by synchronous fluorescence analysis. It is demonstrated by two types of tumor-suppressor genes namely exon segments of p16 (T1) and p53 (T2) genes. The composite MB probe includes two loops and two stems, and two fluorophores of 6-carboxyfluorescein group (FAM) and tetramethyl-6-carboxyrhodamine (TAMRA) are connected to the two ends of molecular beacon. Every stem portion of MB include four continuous nucleotides with guanine (G) base as quencher, every loop portion is a probe sequence that is complementary to a corresponding target sequence. In the absence of target DNA, the composite MBs are in the stem-closed form, the fluorescence of FAM and TAMRA are quenched by G bases. At this time, the fluorescence signals of FAM and TAMRA are all very low. In the presence of target DNA, the MBs hybridize with the target DNA and form double-strands, FAM and TAMRA are separated from G bases, and the fluorescence of FAM and TAMRA recovers simultaneously. Thus, the simultaneous detection of two targets of DNA can be realized by measuring fluorescence signals of FAM and TAMRA, respectively. Under the optimum conditions, the fluorescence intensities of FAM and TAMRA all exhibit good linear dependence on their target DNA concentration in the range from 5 × 10(-11) to 5.5 × 10(-9) M. The detection limit of T1 is 4 × 10(-11) M (3σ), and that of T2 is 3 × 10(-11) M. This composite MB can be applied to detect the real sample, and can be applied to detect two aleatoric sequences of DNA. Compared with previously reported methods of detecting multiplexed target DNA with MBs, the proposed method has some advantages including easy synthesis of composite MB probes, low detection cost and shorter analytical time.
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Affiliation(s)
- Dong-Shan Xiang
- Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei University for Nationalities, Enshi 445000, China
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Zhai K, Yang X, Xin YH, Zhou Z, Ma J, Zhu J, Wang Y, Huang Y. [Study on life quality and influence factors in cleft lip and palate parents]. Hua Xi Kou Qiang Yi Xue Za Zhi 2013; 31:279-282. [PMID: 23841301] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To investigate the life quality and their influence factors in cleft lip and palate parents and to provide evidences for improving the life quality of the parents. METHODS One hundred and forty-three parents whose children accepted the primary surgery of cleft lip and palate were selected as the case group, and 109 normal adults as the control group. Both groups were investigated by 3 questionnaires that included questionnaire of general status, generic quality of life inventory-74 (GQOLI-74), social support rating scale (SSRS). The results of two groups were analyzed and the influence factors on life quality were studied by stepwise multiple regression analysis. RESULTS 1)The scores of the life quality, mental function, social function, material life in the case group were significantly low compared with the control group(P<0.05). 2)The social support total scores, subjective support and utilization of social support were lower than the control group(P<0.05). 3)Social support, objective support, subjective support positively correlated with life quality scores and every dimension score in the case group. 4)The relevant factors affecting life quality were social support and income. CONCLUSION The life quality and social support of cleft lip and palate patients is poor, we should give more support and help to improve their life quality.
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Affiliation(s)
- Kun Zhai
- College of Stomatology, Ningxia Medical University, Yinchuan 750004, China
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Gota H, Tuszewski M, Smirnov A, Korepanov S, Akhmetov T, Ivanov A, Voskoboynikov R, Binderbauer MW, Guo HY, Barnes D, Aefsky S, Brown R, Bui DQ, Clary R, Conroy KD, Deng BH, Dettrick SA, Douglass JD, Garate E, Glass FJ, Gupta D, Gupta S, Kinley JS, Knapp K, Hollins M, Longman A, Li XL, Luo Y, Mendoza R, Mok Y, Necas A, Primavera S, Osin D, Rostoker N, Ruskov E, Schmitz L, Schroeder JH, Sevier L, Sibley A, Song Y, Sun X, Tajima T, Thompson MC, Trask E, Van Drie AD, Walters JK, Wyman MD, Zhai K. A High Performance Field-Reversed Configuration Regime in the C-2 Device. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Akhmetov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - A. Ivanov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - R. Voskoboynikov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Brown
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - F. J. Glass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Hollins
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. L. Li
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Luo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Ruskov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Schmitz
- Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. Sun
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. D. Wyman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
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Xiang D, Zeng G, Zhai K, Li L, He Z. Determination of melamine in milk powder based on the fluorescence enhancement of Au nanoparticles. Analyst 2011; 136:2837-44. [DOI: 10.1039/c1an00013f] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Canik JM, Anderson DT, Anderson FSB, Likin KM, Talmadge JN, Zhai K. Experimental demonstration of improved neoclassical transport with quasihelical symmetry. Phys Rev Lett 2007; 98:085002. [PMID: 17359105 DOI: 10.1103/physrevlett.98.085002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Indexed: 05/14/2023]
Abstract
Differences in the electron particle and thermal transport are reported between plasmas produced in a quasihelically symmetric (QHS) magnetic field and a configuration with the symmetry broken. The thermal diffusivity is reduced in the QHS configuration, resulting in higher electron temperatures than in the nonsymmetric configuration for a fixed power input. The density profile in QHS plasmas is centrally peaked, and in the nonsymmetric configuration the core density profile is hollow. The hollow profile is due to neoclassical thermodiffusion, which is reduced in the QHS configuration.
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Affiliation(s)
- J M Canik
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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