1
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Zhang X, Zhang L, Yu T, Gao Y, Zhai T, Zhao T, Xing Z. Genetic response analysis of Beauveria bassiana Z1 under high concentration Cd(II) stress. J Hazard Mater 2024; 464:132984. [PMID: 37995637 DOI: 10.1016/j.jhazmat.2023.132984] [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: 06/04/2023] [Revised: 10/27/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023]
Abstract
Cadmium (Cd(II)) has carcinogenic and teratogenic toxicity, which can be accumulated in the human body through the food chain, endangering human health and life. In this study, a highly Cd(II)-tolerant fungus named Beauveria bassiana Z1 was studied, and its Cd(Ⅱ) removal efficiency was 71.2% when the Cd(II) concentration was 10 mM. Through bioanalysis and experimental verification of the transcriptome data, it was found that cadmium entered the cells through calcium ion channels, and then complexed with intracellular glutathione (GSH) and stored in vacuoles or excluded extracellular by ABC transporters. Cytochrome P450 was significantly upregulated in many pathways and actively participated in detoxification related reactions. The addition of cytochrome inhibitor taxifolin reduced the removal efficiency of Cd(II) by 45%. In the analysis, it demonstrated that ACOX1 gene and OPR gene of jasmonic acid (JA) synthesis pathway were significantly up-regulated, and were correlated with bZIP family transcription factors cpc-1_0 and pa p1_0. The results showed that exogenous JA could improve the removal efficiency of Cd(II) by strain Z1.
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Affiliation(s)
- Xiaoping Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Lijie Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Tiantian Yu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yanhui Gao
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Tianrui Zhai
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Tiantao Zhao
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Zhilin Xing
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
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2
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Chen R, Liang N, Zhai T. Dual-color emissive OLED with orthogonal polarization modes. Nat Commun 2024; 15:1331. [PMID: 38351002 PMCID: PMC10864411 DOI: 10.1038/s41467-024-45311-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/21/2024] [Indexed: 02/16/2024] Open
Abstract
Linearly polarized organic light-emitting diodes have become appealing functional expansions of polarization optics and optoelectronic applications. However, the current linearly polarized diodes exhibit low polarization performance, cost-prohibitive process, and monochromatic modulation limit. Herein, we develop a switchable dual-color orthogonal linear polarization mode in organic light-emitting diode, based on a dielectric/metal nanograting-waveguide hybrid-microcavity using cost-efficient laser interference lithography and vacuum thermal evaporation. This acquired diode presents a transverse-electric/transverse-magnetic polarization extinction ratio of 15.8 dB with a divergence angle of ±30°, an external quantum efficiency of 2.25%, and orthogonal polarized colors from green to sky-blue. This rasterization of dielectric/metal-cathode further satisfies momentum matching between waveguide and air mode, diffracting both the targeted sky-blue transverse-electric mode and the off-confined green transverse-magnetic mode. Therefore, a polarization-encrypted colorful optical image is proposed, representing a significant step toward the low-cost high-performance linearly polarized light-emitting diodes and electrically-inspired polarization encryption for color images.
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Affiliation(s)
- Ruixiang Chen
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Ningning Liang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China.
| | - Tianrui Zhai
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China.
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3
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Xu Z, Yan Y, Wang X, Wang X, Zhou Z, Yang X, Zhai T. Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point. Adv Sci (Weinh) 2024; 11:e2308362. [PMID: 38072636 PMCID: PMC10870016 DOI: 10.1002/advs.202308362] [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: 11/03/2023] [Indexed: 02/17/2024]
Abstract
Enantiomeric excess (ee) is an essential indicator of chiral drug purification in the pharmaceutical industry. However, to date the ee determination of unknown concentration enantiomers generally involves two separate techniques for chirality and concentration measurement. Here, a whispering-gallery mode (WGM) based optofluidic microlaser near exceptional point to achieve the ee determination under unknown concentration with a single technique is proposed. Exceptional point induces the unidirectional WGM lasing, providing the optofluidic microlaser with the novel capability to measure chirality by polarization, in addition to wavelength-based concentration detection. The dual-parameters detection of optofluidic microlaser empowers it to achieve ee determination of various unknown enantiomers without additional concentration measurements, a feat that is challenging to accomplish with other methods. Featuring the sensitivity enhancement and miniature structure of the WGM sensors, the obtained chiroptical response of the present approach is ≈30-fold higher than that of the conventional optical rotation-based polarimeter, and the reagent consumption is reduced by three orders of magnitude.
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Affiliation(s)
- Zhiyang Xu
- Department of Physics and Optoelectronic EngineeringFaculty of ScienceBeijing University of TechnologyBeijing100124China
- Institute of Laser EngineeringFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China
| | - Yinzhou Yan
- Institute of Laser EngineeringFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China
| | - Xingyuan Wang
- College of Mathematics and PhysicsBeijing University of Chemical TechnologyBeijing100029China
| | - Xiaolei Wang
- Department of Physics and Optoelectronic EngineeringFaculty of ScienceBeijing University of TechnologyBeijing100124China
| | - Zhixiang Zhou
- Faculty of Environment and LifeBeijing University of TechnologyBeijing100124China
| | - Xi Yang
- State Key Laboratory for Mesoscopic Physics and School of PhysicsPeking UniversityBeijing100871China
| | - Tianrui Zhai
- Department of Physics and Optoelectronic EngineeringFaculty of ScienceBeijing University of TechnologyBeijing100124China
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4
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Ruan J, Li Y, Lin J, Ren Z, Iqbal N, Guo D, Zhai T. Transferable microfiber laser arrays for high-sensitivity thermal sensing. Nanoscale 2023; 15:16976-16983. [PMID: 37830124 DOI: 10.1039/d3nr03118g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Functional microfibers have attracted extensive attention due to their potential in health monitoring, radiation cooling, power management and luminescence. Among these, polymer fiber-based microlasers have plentiful applications due to their merits of full color, high quality factor and simple fabrication. However, developing a facile approach to fabricate stable microfiber lasing devices for high-sensitivity thermal sensing is still challenging. In this research, we propose a design of a stable and transferable membrane inlaid with whispering-gallery-mode plasmon hybrid microlaser arrays for thermal sensing. By integrating plasmonic gold nanorods with polymer lasing microfiber arrays that are embedded in the polydimethylsiloxane matrix, whispering-gallery-mode lasing arrays with high quality are achieved. Based on the thermo-optical effect of the membrane, a tuning range of 1.462 nm for the lasing peak shift under temperature variation from 30.6 °C to 38.7 °C is obtained. The ultimate thermal sensing sensitivity can reach up to 0.181 nm °C-1 and the limit of detection is 0.131 °C, with a high figure of merit of 2.961 °C-1. Moreover, a stable laser linewidth can be maintained within the tuning range due to plasmon-improved photon confinement and PDMS-reduced scattering loss. This work is expected to provide a facile approach for the fabrication of high-sensitivity on-chip thermometry devices.
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Affiliation(s)
- Jun Ruan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Yixuan Li
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Junzhe Lin
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Zihan Ren
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Naeem Iqbal
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Dan Guo
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
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5
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Gohar A, Yan J, Xu Z, Shen K, Anwar H, Shi X, Iqbal N, Zhai T. Tunable random laser based on hybrid plasmonic enhancement. Opt Express 2023; 31:36150-36160. [PMID: 38017770 DOI: 10.1364/oe.503031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/30/2023] [Indexed: 11/30/2023]
Abstract
This research investigates the hybridized plasmonic response of silver film combined with dispersed silver (Ag) nanowires (NWs) to random laser emission. The mixture of Rhodamine B (RhB) dye and polyvinyl alcohol (PVA) matrix is taken as the gain medium for random lasing, and the silver combination provides feedback mechanisms for light trapping. Importantly, film roughness and the coupling between localized and extended (delocalized) surface plasmons play a vital role in RL performance evaluation. The laser threshold is strongly influenced by film thickness attributed to surface roughness. Furthermore, the variation in film thickness also supports the wavelength modulation of 9 nm (597 nm to 606 nm), which results from the reabsorption of RhB. Additionally, the intriguing capability of emission wavelength tuning under the variation of temperature facilitates exciting prospects for precise wavelength control in plasmonic devices.
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6
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Tong J, Ge K, Xu Z, Zhai T. Switchable whispering gallery mode lasing via phase transition. Opt Lett 2023; 48:5161-5164. [PMID: 37773410 DOI: 10.1364/ol.501359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/07/2023] [Indexed: 10/01/2023]
Abstract
Combining phase-transition materials with optical microcavities may advance the applications of whispering-gallery mode (WGM) lasing in performance customization, sensing, and optical switching. In this study, switchable WGM lasing based on phase transition is reported. The device is designed by introducing the phase-transition hydrogel into the capillary microcavity. After approaching the phase-transition point in hydrogel, the number of WGM lasing modes decreases sharply with a significant blueshift in the wavelength. The phenomenon is caused by the increase in light scattering and decrease in effective refractive index of the device. Furthermore, single-mode lasing is obtained by manipulating the phase transition, which exhibits superior reversibility. This study may pave the way for designing and multifunctioning of novel WGM lasing in photonic devices.
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7
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Zhang Y, Wang G, Liu F, Shang Z, Li T, Yang Q, Zhai T, Wang X. Chirality detection of biological molecule through spin selectivity effect. J Chem Phys 2023; 159:114703. [PMID: 37721328 DOI: 10.1063/5.0156513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 08/28/2023] [Indexed: 09/19/2023] Open
Abstract
The ability to accurately monitor chiral biological molecules is of great significance for their potential applications in disease diagnosis and virus detection. As the existing chiral detection technologies are mainly relying on an optical method by using left/right circularly polarized light, the universality is low and the operation is complicated. Moreover, large quantity of chiral molecules is required, causing low detection efficiency. Here, a self-assembled monolayer of polypeptides has been fabricated to realize trace detection of chirality based on spin selectivity of photon-electron interaction. We have utilized Kerr technique to detect the rotation angle by the molecular monolayer, which indicates the chirality of polypeptides. The chiral structure of a biological molecule could result in spin-selectivity of electrons and thus influence the interaction between electron spin and light polarization. A Kerr rotation angle of ∼3° has been obviously observed, equivalent to the magneto-optic Kerr effect without magnetic material or magnetic field. Furthermore, we have provided a novel solution to achieve chirality discrimination and amplification simultaneously through an optical fiber. The proposed design is applicable for chiral detection via increasing their differential output signal, which clearly demonstrates a useful strategy toward chirality characterization of biological molecules.
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Affiliation(s)
- Yu Zhang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Guangcheng Wang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Fangyuan Liu
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Zixuan Shang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Tianhao Li
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Qianqian Yang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaolei Wang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing 100124, China
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8
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Tong J, Ruan J, Iqbal N, Ma H, Ge K, Lin C, Zhai T. Tunable random lasers via phase transition for information encryption. Opt Express 2023; 31:31661-31669. [PMID: 37710680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Introducing phase transition materials to random systems provides a promising route to create new optoelectronic functionalities of random lasers. Here, a phase transition random laser with switchable lasing modes is reported, which is designed with a thermoresponsive hydrogel as scattering medium. By manipulating the phase transition in hydrogel, random lasing modes can be switched reversibility between incoherent and coherent random lasing. The phenomenon derives from the changing of light scattering properties in different phase states, thus affecting the optical feedback path of random lasing. Besides, based on its controllable and easily detectable time-domain characteristics, the phase transition random laser is applied in information encoding and transmission. It is the first time that the transition from coherent to incoherent random lasing is observed by varying the sample phase states. This work will inspire the design and application of novel random lasers in photoelectric device.
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9
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Chen P, Zhai T, Zhang L, Zhao T, Xing Z, Liu H. Domestication and pilot-scale culture of mixed bacteria HY-1 capable of heterotrophic nitrification-aerobic denitrification. Bioresour Technol 2023:129285. [PMID: 37277005 DOI: 10.1016/j.biortech.2023.129285] [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: 04/03/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023]
Abstract
To further investigate the potential of heterotrophic nitrification-aerobic denitrification (HN-AD) bacteria for practical applications, the HN-AD mixed bacteria HY-1 were enriched and domesticated in this study. After five generations of domestication, the mixture was able to remove 98% of ammonia nitrogen (400 mg/L) and 81.9% of mixed nitrogen source (nitrate, nitrite). Changes in community structure in the domestication process of mixed microorganisms were studied using 16S rDNA-seq. The results indicated an increase in the abundance of Acinetobacter from 16.9% to 80%. The conditions for the expanded culture of the HY-1 were also optimized. Moreover, A pilot-scale expanded reactor with a capacity of 1000L was constructed, and the HY-1 was successfully expanded from 0.1L to 800L. The community structures of the HY-1 remained stable after the expanded culture, with Acinetobacter as the dominant species. Moreover, the HY-1 demonstrated adaptability to actual high ammonia nitrogen wastewater and showed potential for practical application.
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Affiliation(s)
- Peipei Chen
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Tianrui Zhai
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Lijie Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China; School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Tiantao Zhao
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Zhilin Xing
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Hao Liu
- Chongqing Shiji Eco-Environmental Science and Technology Co., Ltd, China
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10
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Liang N, Tian R, Xu Y, Yao H, Yang H, Wei Y, Xin X, Chen R, Zhai T, Wang Z, Hou J. Trans-Reflective Structural Color Filters Assisting Multifunctional-Integrated Semitransparent Photovoltaic Window. Adv Mater 2023; 35:e2300360. [PMID: 36930466 DOI: 10.1002/adma.202300360] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/25/2023] [Indexed: 06/02/2023]
Abstract
Multifunction-integrated semitransparent organic photovoltaic cells (STOPVs), with high power generation, colorful transmittance/reflectance, excellent ultraviolet (UV) protection, and thermal insulation, are fully in line with the concept of architectural aesthetics and photoprotection characteristics for building-integrated photovoltaic-window. For the indelible rainbow color photovoltaic window, one crucial issue is to realize the integration of these photons- and photoelectric-related multifunction. Herein, dynamic transmissive and reflective structural color controllable filters, with asymmetrical metal-insulator-metal (MIM) configurations (20 nm-Ag-HATCN-30 nm-Ag) through machine learning, are deliberately designed for colorful STOPV devices. This endows the resultant integrated devices with ≈5% enhanced power conversion efficiency (PCE) than the bare-STOPVs, gifted UV (300-400 nm) blocking rates as high as 93.5, 94.1, 90.2, and 94.5%, as well as a superior infrared radiation (IR) (700-1400 nm) rejection approaching 100% for transparent purple-, blue-, green- and red-STOPV cells, respectively. Most importantly, benefiting from the photonic recycling effect beyond microcavity resonance wavelength, a reported quantum utilization efficiency (QUE) as high as 80%, is first presented for the transparent-green-STOPVs with an ultra-narrow bandgap of 1.2 eV. These asymmetrical Febry-Pérot transmissive and reflective structural color filters can also be extended to silicon- and perovskite-based optoelectric devices and make it possible to integrate additional target optical functions for multi-purpose optoelectric devices.
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Affiliation(s)
- Ningning Liang
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Ruiqi Tian
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Ye Xu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Huifeng Yao
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hua Yang
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yi Wei
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Xia Xin
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Ruixiang Chen
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Tianrui Zhai
- Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Zhaohui Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Jianhui Hou
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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11
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Guo D, Xu Y, Ruan J, Tong J, Li Y, Zhai T, Song Y. Nonpolar Solvent Modulated Inkjet Printing of Nanoparticle Self-Assembly Morphologies. Small 2023:e2208161. [PMID: 37191293 DOI: 10.1002/smll.202208161] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/19/2023] [Indexed: 05/17/2023]
Abstract
Patterning of luminescent nanomaterials is critical in the fields of display and information encryption, and inkjet printing technology have shown remarkable significance with the advantage of fast, large-scalable and integrative. However, inkjet printing nanoparticle deposits with high-resolution and well controlled morphology from nonpolar solvent droplets is still challenging. Herein, a facile approach of nonpolar solvent modulated inkjet printing of nanoparticles self-assembly patterns driven by the shrinkage of the droplet and inner solutal convection is proposed. Through regulating the solvent composition and nanoparticle concentration, multicolor light-emissive upconversion nanoparticle self-assembly microarrays with tunable morphologies are achieved, showing the integration of designable microscale morphologies and photoluminescences for multimodal anti-counterfeit. Furthermore, inkjet printing of nanoparticles self-assembled continuous lines with adjustable morphologies by controlling the coalescence and drying of the ink droplets is achieved. The high resolution of inkjet printing microarrays and continuous lines' width < 5 and 10 µm is realized, respectively. This nonpolar solvent-modulated inkjet printing of nanoparticle deposits approach facilitates the patterning and integration of different nanomaterials, and is expected to provide a versatile platform for fabricating advanced devices applied in photonics integration, micro-LED, and near-field display.
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Affiliation(s)
- Dan Guo
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yanan Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jun Ruan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Junhua Tong
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yixuan Li
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, P. R. China
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12
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Wang X, Shang Z, Zhang C, Kang J, Liu T, Wang X, Chen S, Liu H, Tang W, Zeng YJ, Guo J, Cheng Z, Liu L, Pan D, Tong S, Wu B, Xie Y, Wang G, Deng J, Zhai T, Deng HX, Hong J, Zhao J. Electrical and magnetic anisotropies in van der Waals multiferroic CuCrP 2S 6. Nat Commun 2023; 14:840. [PMID: 36792610 PMCID: PMC9931707 DOI: 10.1038/s41467-023-36512-1] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
Multiferroic materials have great potential in non-volatile devices for low-power and ultra-high density information storage, owing to their unique characteristic of coexisting ferroelectric and ferromagnetic orders. The effective manipulation of their intrinsic anisotropy makes it promising to control multiple degrees of the storage "medium". Here, we have discovered intriguing in-plane electrical and magnetic anisotropies in van der Waals (vdW) multiferroic CuCrP2S6. The uniaxial anisotropies of current rectifications, magnetic properties and magnon modes are demonstrated and manipulated by electric direction/polarity, temperature variation and magnetic field. More important, we have discovered the spin-flop transition corresponding to specific resonance modes, and determined the anisotropy parameters by consistent model fittings and theoretical calculations. Our work provides in-depth investigation and quantitative analysis of electrical and magnetic anisotropies with the same easy axis in vdW multiferroics, which will stimulate potential device applications of artificial bionic synapses, multi-terminal spintronic chips and magnetoelectric devices.
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Affiliation(s)
- Xiaolei Wang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, China.
| | - Zixuan Shang
- grid.28703.3e0000 0000 9040 3743Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124 China
| | - Chen Zhang
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
| | - Jiaqian Kang
- grid.43555.320000 0000 8841 6246School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Tao Liu
- grid.54549.390000 0004 0369 4060National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu, 610054 China
| | - Xueyun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China.
| | - Siliang Chen
- grid.19373.3f0000 0001 0193 3564Guangdong Provincial Key Laboratory of Semiconductor, Optoelectronic Materials and Intelligent Photonic Systems, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055 China
| | - Haoliang Liu
- Guangdong Provincial Key Laboratory of Semiconductor, Optoelectronic Materials and Intelligent Photonic Systems, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.
| | - Wei Tang
- grid.263488.30000 0001 0472 9649Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 China
| | - Yu-Jia Zeng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Jianfeng Guo
- grid.24539.390000 0004 0368 8103Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing, 100872 China
| | - Zhihai Cheng
- grid.24539.390000 0004 0368 8103Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing, 100872 China
| | - Lei Liu
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
| | - Dong Pan
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
| | - Shucheng Tong
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
| | - Bo Wu
- grid.28703.3e0000 0000 9040 3743Key Laboratory of Optoelectronics Technology Ministry of Education, Beijing University of Technology, Beijing, 100124 China
| | - Yiyang Xie
- grid.28703.3e0000 0000 9040 3743Key Laboratory of Optoelectronics Technology Ministry of Education, Beijing University of Technology, Beijing, 100124 China
| | - Guangcheng Wang
- grid.28703.3e0000 0000 9040 3743Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124 China
| | - Jinxiang Deng
- grid.28703.3e0000 0000 9040 3743Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124 China
| | - Tianrui Zhai
- grid.28703.3e0000 0000 9040 3743Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124 China
| | - Hui-Xiong Deng
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
| | - Jiawang Hong
- grid.43555.320000 0000 8841 6246School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Jianhua Zhao
- grid.9227.e0000000119573309State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 China
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13
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Lin D, Li Y, Zhang H, Zhang S, Gao Y, Zhai T, Hu S, Sheng C, Guo H, Xu C, Wei Y, Li S, Han Y, Feng Q, Wang S, Xie L, Huang W. In Situ Super-Hindrance-Triggered Multilayer Cracks for Random Lasing in π-Functional Nanopolymer Films. Research 2023; 6:0027. [PMID: 37040485 PMCID: PMC10076025 DOI: 10.34133/research.0027] [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: 08/30/2022] [Accepted: 11/29/2022] [Indexed: 01/25/2023]
Abstract
In situ self-assembly of semiconducting emitters into multilayer cracks is a significant solution-processing method to fabricate organic high-
Q
lasers. However, it is still difficult to realize from conventional conjugated polymers. Herein, we create the molecular super-hindrance-etching technology, based on the π-functional nanopolymer PG-Cz, to modulate multilayer cracks applied in organic single-component random lasers. Massive interface cracks are formed by promoting interchain disentanglement with the super-steric hindrance effect of π-interrupted main chains, and multilayer morphologies with photonic-crystal-like ordering are also generated simultaneously during the drop-casting method. Meanwhile, the enhancement of quantum yields on micrometer-thick films (
Φ
= 40% to 50%) ensures high-efficient and ultrastable deep-blue emission. Furthermore, a deep-blue random lasing is achieved with narrow linewidths ~0.08 nm and high-quality factors
Q
≈ 5,500 to 6,200. These findings will offer promising pathways of organic π-nanopolymers for the simplification of solution processes applied in lasing devices and wearable photonics.
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Affiliation(s)
- Dongqing Lin
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Yang Li
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - He Zhang
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Shuai Zhang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Yuezheng Gao
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Shu Hu
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Chuanxiang Sheng
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Heng Guo
- State Key Laboratory of Bioelectronics, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Chunxiang Xu
- State Key Laboratory of Bioelectronics, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ying Wei
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Shifeng Li
- College of Engineering and Applied Science, Nanjing University, Nanjing, 210023, China
| | - Yelong Han
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Quanyou Feng
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Shasha Wang
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Linghai Xie
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Wei Huang
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an 710072, China
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14
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Lin Y, Zhai T, Lin Z. A Radiomics-Based Model to Identify Candidates for De-Intensified Treatment in Patients with Locoregionally Advanced Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Zhai T, Yan J, Shi X, Ruan J, Tong J, Liang N. Dual chaos encryption for color images enabled in a WGM-random hybrid microcavity. Nanoscale 2022; 14:11252-11260. [PMID: 35880451 DOI: 10.1039/d2nr02557d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chaotic cryptography as an important means for digital image encryption has become a great cryptographic project in the current information age. As a novel microcavity laser, a random laser (RL) has a natural advantage for a chaotic system, relying on its spectral randomness. Nevertheless, this encrypted image generally suffers from outline exposition when an unsuitable key from a single RL spectrum is employed. Herein, to realize reliable dual chaotic encryption, an internally integrated hybrid microcavity in random and whispering-gallery-mode (WGM) is reported. Within this coupled microcavity, the rhodamine-6G-doped inner-wall of the fiber serves as the gain medium and the optical cavities for WGM lasing; an RL mode is enabled by scattered particles and the gain medium (Rh6G). Interestingly, the smooth inner wall of the fiber with a high-quality (Q) factor and tight optical confinement make WGM lasing occur earlier than RL. What is more, a fast energy transfer process from the WGM laser to Ag nanoparticles and the resultant localized surface plasmon resonance effects from Ag NPs to RL jointly promote the output of the random laser. As a result, a free transformation from the WGM laser to RL is successfully modulated by varying the pump power alone, thus providing two initial values for dual chaos image encryption. This work provides an in-depth understanding of a WGM-random inner-coupled cavity and promotes the application of a hybrid microcavity in the field of information security.
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Affiliation(s)
- Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Jiuhu Yan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Jun Ruan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Junhua Tong
- College of Mathematics and physics, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ningning Liang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
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16
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Feng C, Tong J, Cui L, Zhao Y, Zhai T. Plasmonic distributed feedback lasing in an anodic aluminum oxide/silver/polymer hybrid membrane. Opt Express 2022; 30:28589-28600. [PMID: 36299051 DOI: 10.1364/oe.461117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/27/2022] [Indexed: 06/16/2023]
Abstract
A hybrid membrane is employed as a high-order plasmonic distributed feedback (DFB) cavity to reduce the lasing threshold of polymer lasers. The hybrid membrane consists of an anodic aluminum oxide (AAO) membrane, a 25 nm thick silver layer and a free-standing polymer membrane. The AAO membrane is fabricated by a low-cost, single chemical etching method. Then, a layer of silver with a thickness of 25 nm is sputtered on the surface of the AAO. Subsequently, a polymer membrane is directly attached to the silver-plated AAO membrane, forming an AAO/silver/polymer hybrid membrane. Under optical pumping conditions, low-threshold, three-order DFB lasing is observed. The proposed laser device exhibited a dual-threshold characteristic because of the evolution from amplified spontaneous emission to DFB lasing. And a significant shift from omnidirectional emission to directional emission lasing can be observed while the pump energy density is beyond the second threshold. Furthermore, the plasmonic enhancement sourced from silver corrugation reveals important improvement effects to the DFB lasing of AAO/silver/polymer hybrid membrane for decreasing threshold, narrowing full width at half maximum (FWHM), and an increasing Q factor. This work may promote the design and production of low-cost and large-area high-order plasmonic DFB polymer lasers.
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17
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Ge K, Ruan J, Cui L, Guo D, Tong J, Zhai T. Dynamic manipulation of WGM lasing by tailoring the coupling strength. Opt Express 2022; 30:28752-28761. [PMID: 36299064 DOI: 10.1364/oe.467945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/07/2022] [Indexed: 06/16/2023]
Abstract
Miniaturized lasing with dynamic manipulation is critical to the performance of compact and versatile photonic devices. However, it is still a challenge to manipulate the whispering gallery mode lasing modes dynamically. Here, we design the quasi-three-dimensional coupled cavity by a micromanipulation technique. The coupled cavity consists of two intersection polymer microfibers. The mode selection mechanism is demonstrated experimentally and theoretically in the coupled microfiber cavity. Dynamic manipulation from multiple modes to single-mode lasing is achieved by controlling the coupling strength, which can be quantitatively controlled by changing the coupling angle or the coupling distance. Our work provides a flexible alternative for the lasing mode modulation in the on-chip photonic integration.
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18
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Shang Z, Liu T, Yang Q, Cui S, Xu K, Zhang Y, Deng J, Zhai T, Wang X. Chiral-Molecule-Based Spintronic Devices. Small 2022; 18:e2203015. [PMID: 35836101 DOI: 10.1002/smll.202203015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/19/2022] [Indexed: 06/15/2023]
Abstract
Spintronics and molecular chemistry have achieved remarkable achievements separately. Their combination can apply the superiority of molecular diversity to intervene or manipulate the spin-related properties. It inevitably brings in a new type of functional devices with a molecular interface, which has become an emerging field in information storage and processing. Normally, spin polarization has to be realized by magnetic materials as manipulated by magnetic fields. Recently, chiral-induced spin selectivity (CISS) was discovered surprisingly that non-magnetic chiral molecules can generate spin polarization through their structural chirality. Here, the recent progress of integrating the strengths of molecular chemistry and spintronics is reviewed by introducing the experimental results, theoretical models, and device performances of the CISS effect. Compared to normal ferromagnetic metals, CISS originating from a chiral structure has great advantages of high spin polarization, excellent interface, simple preparation process, and low cost. It has the potential to obtain high efficiency of spin injection into metals and semiconductors, getting rid of magnetic fields and ferromagnetic electrodes. The physical mechanisms, unique advantages, and device performances of CISS are sequentially clarified, revealing important issues to current scientific research and industrial applications. This mini-review points out a key technology of information storage for future spintronic devices without magnetic components.
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Affiliation(s)
- Zixuan Shang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Tianhan Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Qianqian Yang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Shuainan Cui
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Kailin Xu
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yu Zhang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jinxiang Deng
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Tianrui Zhai
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Xiaolei Wang
- Department of Physics and Optoelectronic Engineering, Faculty of Science, Beijing University of Technology, Beijing, 100124, P. R. China
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19
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Liu F, Tong J, Xu Z, Ge K, Ruan J, Cui L, Zhai T. Electrically Tunable Polymer Whispering-Gallery-Mode Laser. Materials (Basel) 2022; 15:ma15144812. [PMID: 35888278 PMCID: PMC9317815 DOI: 10.3390/ma15144812] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 02/01/2023]
Abstract
Microlasers hold great promise for the development of photonics and optoelectronics. At present, tunable microcavity lasers, especially regarding in situ dynamic tuning, are still the focus of research. In this study, we combined a 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (PMN-PT) piezoelectric crystal with a Poly [9,9-dioctylfluorenyl-2,7-diyl] (PFO) microring cavity to realize a high-quality, electrically tunable, whispering-gallery-mode (WGM) laser. The dependence of the laser properties on the diameter of the microrings, including the laser spectrum and quality (Q) value, was investigated. It was found that with an increase in microring diameter, the laser emission redshifted, and the Q value increased. In addition, the device effectively achieved a blueshift under an applied electric field, and the wavelength tuning range was 0.71 nm. This work provides a method for in situ dynamic spectral modulation of microcavity lasers, and is expected to provide inspiration for the application of integrated photonics technology.
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Affiliation(s)
- Fangyuan Liu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
| | - Junhua Tong
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China;
| | - Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
| | - Kun Ge
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
| | - Jun Ruan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
| | - Libin Cui
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
- Correspondence: (L.C.); (T.Z.)
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (F.L.); (Z.X.); (K.G.); (J.R.)
- Correspondence: (L.C.); (T.Z.)
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20
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Niu B, Shi X, Ge K, Ruan J, Xu Z, Zhang S, Guo D, Zhai T. An all-optical tunable polymer WGM laser pumped by a laser diode. Nanoscale Adv 2022; 4:2153-2158. [PMID: 36133452 PMCID: PMC9417825 DOI: 10.1039/d2na00025c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/28/2022] [Indexed: 06/16/2023]
Abstract
An all-optical tunable whispering gallery mode (WGM) laser pumped by a laser diode is proposed. The laser is fabricated by filling a silica capillary with a light-emitting conjugated polymer solution. Based on the thermo-optic effect of the hydroxyl groups in the polymer and capillary, the effective refractive index of the WGM cavity changes by the auxiliary irradiation of the laser, and the wavelength of the WGM mode shifts correspondingly. The emission wavelength was continuously tuned over 13 nm with the irradiation power intensity changing from 0 to 22.41 W cm-2, showing a corresponding tuning rate of 0.58 nm W-1 cm-2. The wavelength tuning process has a fast response time that is within 2.8 s. It shows strong stability, with the output intensity showing no obvious attenuation after 100 minutes of operation. The proposed laser exhibits good repeatability, stability and high tuning efficiency, and could be applied as a light source for on-chip devices.
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Affiliation(s)
- Ben Niu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Kun Ge
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Jun Ruan
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Shuai Zhang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Dan Guo
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology Beijing 100124 China
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21
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Liang Y, Feng S, Xie W, Jiang Q, Yang Y, Luo R, Kidd E, Zhai T, Xie L. MO-0887 Clinical value of ITV delineation method in cervical cancer patients receiving chemoradiotherapy. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02453-7] [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: 10/18/2022]
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22
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Abstract
A random laser carrying the scattering information on a biological host is a promising tool for the characterization of biophysical properties. In this work, random lasing from label-free living cells is proposed to achieve rapid cytometry of apoptosis. Random lasing is achieved by adding biocompatible gain medium to a confocal dish containing cells under optically pumped conditions. The random lasing characteristics are distinct at different stages of cell apoptosis after drug treatment. By analyzing the power Fourier transform results of the random lasing spectra, the percentage of apoptotic cells could be distinguished within two seconds, which is more than an order of magnitude faster than traditional flow cytometry. These results provide a label-free approach for rapid cytometry of apoptosis, which is advantageous for further research of random lasers in the biological field.
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Affiliation(s)
- Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Qihao Hong
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Kun Ge
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaolei Wang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Jinxiang Deng
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - ZhiXiang Zhou
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
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23
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Wei Y, Liang N, Jiang W, Zhai T, Wang Z. Rylene-Fullerene Hybrid an Emerging Electron Acceptor for High-Performing and Photothermal-Stable Ternary Solar Cells. Small 2022; 18:e2104060. [PMID: 34825446 DOI: 10.1002/smll.202104060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 10/04/2021] [Indexed: 06/13/2023]
Abstract
Molecular carbon imides, especially extended perylene diimides (PDIs) have been the best wide-band-gap nonfullerene acceptors. Despite their excellent photothermal/chemical stability, flexible reaction sites, and unique photoelectronic properties, there is still a lack of fundamental understanding of their molecular characteristics as a third component. Here, generations of PDIs with distinctive molecular architecture, are deliberately screened out as the third component to PM6:Y6. Only a rylene-fullerene hybrid, S-Fuller-PMI, surprisingly boosts the fill factor (FF) of ternary organic solar cells (OSCs) to 0.77 from 0.72 for PM6:Y6 binary ones, and therefore the power conversion efficiency (PCE) of ternary cells is enhanced from 15.3% to 16.2%. Compared with highly-flexible rylene dimer and rigid multimer, S-Fuller-PMI exhibits higher electron mobility, favorable surface tension, and, therefore tailored compatibility with Y6. These formed Y6:S-Fuller-PMI alloys play as a morphological controller to improve charge separation and transport process. Simultaneously, the suppressed photothermal-induced traps, along with inherent enlarged entropy effect, endow the ternary OSCs still with ≈70% of initial PCE even after 500 h continuous illumination, whereas only 53% is left in their binary counterparts. These results provide new insight into the molecular design principle for distinctive molecular carbon imides as the third component for efficient and durable PM6:Y6-based OSCs.
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Affiliation(s)
- Yi Wei
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Ningning Liang
- Institute of Information Photonics Technology, Faculty of Science, Beijing University of Technology, Beijing, 100124, China
| | - Wei Jiang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Tianrui Zhai
- Institute of Information Photonics Technology, Faculty of Science, Beijing University of Technology, Beijing, 100124, China
| | - Zhaohui Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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24
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Liang N, Liu G, Hu D, Wang K, Li Y, Zhai T, Zhang X, Shuai Z, Yan H, Hou J, Wang Z. Heavy-Atom-Free Room-Temperature Phosphorescent Rylene Imide for High-Performing Organic Photovoltaics. Adv Sci (Weinh) 2022; 9:e2103975. [PMID: 34813181 PMCID: PMC8787389 DOI: 10.1002/advs.202103975] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Organic phosphorescence, originating from triplet excitons, has potential for the development of new generation of organic optoelectronic materials. Herein, two heavy-atom-free room-temperature phosphorescent (RTP) electron acceptors with inherent long lifetime triplet exctions are first reported. These two 3D-fully conjugated rigid perylene imide (PDI) multimers, as the best nonfullerene wide-bandgap electron acceptors, exhibit a significantly elevated T1 of ≈2.1 eV with a room-temperature phosphorescent emission (τ = 66 µs) and a minimized singlet-triplet splitting as low as ≈0.13 eV. The huge spatial congestion between adjacent PDI skeleton endows them with significantly modified electronic characteristics of S1 and T1 . This feature, plus with the fully-conjugated rigid molecular configuration, balances the intersystem crossing rate and fluorescence/phosphorescence rates, and therefore, elevating ET1 to ≈2.1 from 1.2 eV for PDI monomer. Meanwhile, the highly delocalized feature enables the triplet charge-transfer excitons at donor-acceptor interface effectively dissociate into free charges, endowing the RTP electron acceptor based organic solar cells (OSCs) with a high internal quantum efficiency of 84% and excellent charge collection capability of 94%. This study introduces an alternative strategy for designing PDI derivatives with high-triplet state-energy and provides revelatory insights into the fundamental electronic characteristics, photophysical mechanism, and photo-to-current generation pathway.
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Affiliation(s)
- Ningning Liang
- College of Physics and OptoelectronicsFaculty of ScienceBeijing University of TechnologyBeijing100124P. R. China
| | - Guogang Liu
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Deping Hu
- Key Laboratory of Organic Optoelectronics and Molecular EngineeringDepartment of ChemistryTsinghua UniversityBeijing100084P. R. China
| | - Kai Wang
- Key Laboratory of Luminescence and Optical InformationMinistry of EducationSchool of ScienceBeijing Jiaotong UniversityBeijing100044P. R. China
| | - Yan Li
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Tianrui Zhai
- College of Physics and OptoelectronicsFaculty of ScienceBeijing University of TechnologyBeijing100124P. R. China
| | - Xinping Zhang
- College of Physics and OptoelectronicsFaculty of ScienceBeijing University of TechnologyBeijing100124P. R. China
| | - Zhigang Shuai
- Key Laboratory of Organic Optoelectronics and Molecular EngineeringDepartment of ChemistryTsinghua UniversityBeijing100084P. R. China
| | - He Yan
- Department of Chemistry and Energy InstituteHong Kong University of Science and TechnologyClear Water Bay, Kowloon 999077Hong Kong
| | - Jianhui Hou
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Zhaohui Wang
- Key Laboratory of Organic Optoelectronics and Molecular EngineeringDepartment of ChemistryTsinghua UniversityBeijing100084P. R. China
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25
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Su D, Zhai T, Ge K, Zhang S, Xu Z, Tong J, Li H, Sun S, Zhang Y, Wang X. WGM lasing in irregular cavities with arbitrary boundaries. Nanoscale 2021; 13:18349-18355. [PMID: 34729576 DOI: 10.1039/d1nr03938e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Because of its limited light field mode and high Q value, the whispering-gallery-mode (WGM) cavity has been widely studied. In this study, we propose a simple, rapid, low-cost and no-manufacturing technology method that we call the drip-coating method to obtain an irregular cavity with arbitrary boundaries. By using polyvinyl alcohol (PVA) solution doped with rhodamine 6G, the irregular cavity with arbitrary boundaries was drip-coated on a high-reflection mirror, forming a WGM laser. The sample was pumped with a 532 nm pulsed laser, and the single-mode WGM and multi-WGM lasing were obtained. All WGMs are the vertical oscillation modes, which originate from both the total internal reflection of the PVA/air interface and vertical reflection of the PVA/mirror interface. The other boundaries of the cavity were not involved in the reflection and could have any shape. The mechanism of producing single-mode lasing is due to the action of the loss-gain cavity. Multi-WGM lasing is attributed to at least two groups of different WGMs existing in an irregular cavity. This can be confirmed by using a microsphere model and intensity correlation method. These results may provide an alternative for the design of WGM lasers.
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Affiliation(s)
- Dan Su
- College of Mechanical and Electronic Engineering, Beijing Polytechnic, Beijing 100176, China
| | - Tianrui Zhai
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Kun Ge
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Shuai Zhang
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Zhiyang Xu
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Junhua Tong
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Hongzhao Li
- College of Mechanical and Electronic Engineering, Beijing Polytechnic, Beijing 100176, China
| | - Shiju Sun
- College of Mechanical and Electronic Engineering, Beijing Polytechnic, Beijing 100176, China
| | - Ying Zhang
- College of Mechanical and Electronic Engineering, Beijing Polytechnic, Beijing 100176, China
| | - Xiaolei Wang
- Faculty of Science, Beijing University of Technology, Beijing 100124, China.
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Niu B, Ge K, Xu Z, Shi X, Guo D, Zhai T. Laser Diode Pumped Polymer Lasers with Tunable Emission Based on Microfluidic Channels. Polymers (Basel) 2021; 13:polym13203511. [PMID: 34685270 PMCID: PMC8537490 DOI: 10.3390/polym13203511] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 12/29/2022] Open
Abstract
Tunable whispering-gallery-mode (WGM) lasers have been paid lots of attention for their potential applications in the photonic field. Here, a tunable polymer WGM laser based on laser diode pumping is realized with a threshold of 0.43 MW/cm2 per pulse. The WGM laser is realized by a microfluidic microcavity, which consists of a quartz capillary and gain materials. The laser performance keeps stable for a long time (3.5 h), pumped by a 50-ns 50 Hz laser diode with a pumping peak power density of 1.08 MW/cm2 per pulse. The lasing wavelength can be tuned over 15 nm by changing the gain material concentration from 3.5 mg/mL to 12.5 mg/mL in the microfluidic channel. Moreover, the lasing mode can be switched between transverse magnetic (TM) and transverse electric (TE) modes by adjusting the pump polarization. These results provide the basis for designing nanophotonic devices with laser diode pumping.
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Zhang S, Liang N, Shi X, Zhao W, Zhai T. Direction-Adjustable Single-Mode Lasing via Self-Assembly 3D-Curved Microcavities for Gas Sensing. ACS Appl Mater Interfaces 2021; 13:45916-45923. [PMID: 34541849 DOI: 10.1021/acsami.1c14219] [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: 06/13/2023]
Abstract
Drop-based microcavity lasers emerged as a promising tool in modern physics investigation and chemical detection owing to their cost-effective fabrication, high luminescence, and sensitive molecule sensing. However, it is of great challenge to achieve highly directional emission along with high quality (Q) factors via traditional droplet self-assembly behavior of the gain medium on a planar substrate. In this work, a single-mode microcavity laser with directional far-field emission is first proposed via droplet self-assembly 3D-curved microcavities, and simultaneously, acetic acid (AcOH) gas sensing is realized. Trichromatic single-mode lasing in 3D-curved microcavities with distinct organic polymer droplets is constructed on silica fibers via a self-assembly procedure. By regulating the curvature of the substrate, mode selection and directional emission of the lasing action are realized. The measured Q-factor of the proposed anisotropic 3D-curved active microcavity is ∼20k. Furthermore, on account of the sensitive responsiveness of liquid organic polymers, single-mode laser sensors can be realized by measuring the shift of their lasing modes on exposure to organic vapor. Benefiting from chemical reaction with rhodamine 6G, the AcOH gas sensor displays a short response time. These results may open new insights into drop-based quasi-3D-anisotropic whispering-gallery-mode microcavities to improve the development of lab-in-a-droplet, ranging from a tuneable microcavity laser to a chemical gas sensor.
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Affiliation(s)
- Shuai Zhang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Ningning Liang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Wenkang Zhao
- College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
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Abstract
Single-mode plasmonic lasing has great potential for use in photonic and sensing applications. In this work, single-mode lasing is realized using a plasmonic-enhanced woven microfiber that shows ultrahigh sensitivity to the ambient environment. This plasmonic-enhanced microfiber is fabricated by spraying Ag nanospheres onto rhodamine 6G-doped polymer microfibers. Single-mode laser emission with an ultranarrow linewidth (0.1 nm) and a low threshold (18.8 kW/mm2) is achieved in the microfiber using the effects of mode selection and plasmonic enhancement provided by the Ag nanospheres. A large wavelength shift in the single-mode lasing is observed when the proposed laser is used as a sensor and exposed to a humid or acidic environment. The wavelength shift is attributed to refractive index variations in the microfiber caused by either moisture absorption or chemical reactions. In humidity sensing, the laser's sensitivity is as high as 826.6 pm/% relative humidity (RH) and the detection limit is 0.051% RH. An innovative strategy for acetic acid gas sensing is proposed that uses the chemical reaction with rhodamine 6G, and its minimum response time is 5 min. Because of the microfiber's excellent fabric compatibility, a wearable sensor is fabricated by weaving the plasmonic-enhanced microfiber into clothes, and this sensor demonstrates extreme bending stability. The results reported here provide a novel approach to the design and fabrication of ultrasensitive wearable sensors for multifunctional sensing applications.
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Affiliation(s)
- Shuai Zhang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Shaoxin Yan
- College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Xiao Zhang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Kun Ge
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Chang Bao Han
- College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
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Zhai T, Ma X, Han L, Zhang S, Ge K, Xu Y, Xu Z, Cui L. Self-Aligned Emission of Distributed Feedback Lasers on Optical Fiber Sidewall. Nanomaterials (Basel) 2021; 11:nano11092381. [PMID: 34578697 PMCID: PMC8470634 DOI: 10.3390/nano11092381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 12/27/2022]
Abstract
This article assembles a distributed feedback (DFB) cavity on the sidewalls of the optical fiber by using very simple fabrication techniques including two-beam interference lithography and dip-coating. The DFB laser structure comprises graduated gratings on the optical fiber sidewalls which are covered with a layer of colloidal quantum dots. Directional DFB lasing is observed from the fiber facet due to the coupling effect between the grating and the optical fiber. The directional lasing from the optical fiber facet exhibits a small solid divergence angle as compared to the conventional laser. It can be attributed to the two-dimensional light confinement in the fiber waveguide. An analytical approach based on the Bragg condition and the coupled-wave theory was developed to explain the characteristics of the laser device. The intensity of the output coupled laser is tuned by the coupling coefficient, which is determined by the angle between the grating vector and the fiber axis. These results afford opportunities to integrate different DFB lasers on the same optical fiber sidewall, achieving multi-wavelength self-aligned DFB lasers for a directional emission. The proposed technique may provide an alternative to integrating DFB lasers for applications in networking, optical sensing, and power delivery.
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Guo J, Zhai T, van der Schaaf A, Steenbakkers R, Both S, Langendijk J, van Ooijen P, Sijtsema N. PH-0103 Outcome prediction for the prognosis of head and neck cancer patients based on deep learning. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07237-6] [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: 10/20/2022]
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Ge K, Guo D, Ma X, Xu Z, Hayat A, Li S, Zhai T. Large-Area Biocompatible Random Laser for Wearable Applications. Nanomaterials (Basel) 2021; 11:1809. [PMID: 34361195 PMCID: PMC8308224 DOI: 10.3390/nano11071809] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 12/17/2022]
Abstract
Recently, wearable sensor technology has drawn attention to many health-related appliances due to its varied existing optical, electrical, and mechanical applications. Similarly, we have designed a simple and cheap lift-off fabrication technique for the realization of large-area biocompatible random lasers to customize wearable sensors. A large-area random microcavity comprises a matrix element polymethyl methacrylate (PMMA) in which rhodamine B (RhB, which acts as a gain medium) and gold nanorods (Au NRs, which offer plasmonic feedback) are incorporated via a spin-coating technique. In regards to the respective random lasing device residing on a heterogenous film (area > 100 cm2), upon optical excitation, coherent random lasing with a narrow linewidth (~0.4 nm) at a low threshold (~23 μJ/cm2 per pulse) was successfully attained. Here, we maneuvered the mechanical flexibility of the device to modify the spacing between the feedback agents (Au NRs), which tuned the average wavelength from 612.6 to 624 nm under bending while being a recoverable process. Moreover, the flexible film can potentially be used on human skin such as the finger to serve as a motion and relative-humidity sensor. This work demonstrates a designable and simple method to fabricate a large-area biocompatible random laser for wearable sensing.
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Affiliation(s)
- Kun Ge
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
| | - Dan Guo
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
| | - Xiaojie Ma
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
| | - Zhiyang Xu
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
| | - Anwer Hayat
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
| | - Songtao Li
- Department of Mathematics & Physics, North China Electric Power University, Baoding 071000, China;
| | - Tianrui Zhai
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (K.G.); (D.G.); (X.M.); (Z.X.); (A.H.)
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Abstract
A full-color whispering-gallery mode (WGM) laser has been fabricated by partitioning different light-emitting polymers in a nested microcavity. Red-green-blue WGM lasing with a high quality factor above 104 and a narrow linewidth of 0.025 nm emits from nested capillaries when excited with a nanosecond laser. The full-color WGM lasing shows a low excitation threshold for the nested microcavities, which can avoid fluorescence resonant energy transfer. We also achieve wavelength tunable lasing upon altering the different polymers in the nested microcavities. The work demonstrates a simple method to fabricate a full-color WGM laser and its potential applications in compact lighting devices and white laser sources.
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Affiliation(s)
- Kun Ge
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Cui Libin
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Dan Guo
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
| | - Songtao Li
- Department of Mathematics & Physics, North China Electric Power University, Hebei 071000, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China.
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Zhai T, Han L, Ma X, Wang X. Low-Threshold Microlasers Based on Holographic Dual-Gratings. Nanomaterials (Basel) 2021; 11:1530. [PMID: 34207843 PMCID: PMC8226637 DOI: 10.3390/nano11061530] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 11/25/2022]
Abstract
Among the efforts to improve the performances of microlasers, optimization of the gain properties and cavity parameters of these lasers has attracted significant attention recently. Distributed feedback lasers, as one of the most promising candidate technologies for electrically pumped microlasers, can be combined with dual-gratings. This combination provides additional freedom for the design of the laser cavity. Here, a holographic dual-grating is designed to improve the distributed feedback laser performance. The holographic dual-grating laser consists of a colloidal quantum dot film with two parallel gratings, comprising first-order (210 nm) and second-order (420 nm) gratings that can be fabricated easily using a combination of spin coating and interference lithography. The feedback and the output from the cavity are controlled using the first-order grating and the second-order grating, respectively. Through careful design and analysis of the dual-grating, a balance is achieved between the feedback and the cavity output such that the lasing threshold based on the dual-grating is nearly half the threshold of conventional distributed feedback lasers. Additionally, the holographic dual-grating laser shows a high level of stability because of the high stability of the colloidal quantum dots against photobleaching.
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Affiliation(s)
- Tianrui Zhai
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (L.H.); (X.M.)
| | | | | | - Xiaolei Wang
- Faculty of Science, College of Physics and Optoelectronics, Beijing University of Technology, Beijing 100124, China; (L.H.); (X.M.)
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Hayat A, Cui L, Liang H, Zhang S, Zhiyang X, Khan MA, Aziz G, Zhai T. Colloidal quantum dots lasing and coupling in 2D holographic photonic quasicrystals. Opt Express 2021; 29:15145-15158. [PMID: 33985220 DOI: 10.1364/oe.422288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Global research on the solution-processable colloidal quantum dots (CQDs) constitutes outstanding model systems in nanoscience, micro-lasers, and optoelectronic devices due to tunable color, low cost, and wet chemical processing. The two-dimensional (2D) CQDs quasicrystal lasers are more efficient in providing coherent lasing due to radiation feedback, high-quality-factor optical mode, and long-range rotational symmetry. Here, we have fabricated a 2D quasicrystal exhibiting 10-fold rotational symmetry by using a specially design pentagonal prism in the optical setup of a simple and low-cost holographic lithography. We developed a general analytical model based on the cavity coupling effect, which can be used to explain the underlying mechanism responsible for the multi-wavelength lasing in the fabricated 2D CQDs holographic photonic quasicrystal. The multi-wavelength surface-emitting lasers such as λ0 = 629.27 nm, λ1 = 629.85 nm, λ-1 = 629.06 nm, λ2 = 630.17 nm, and λ-2 = 628.76 with a coupling constant κ = 0.38 achieved from the 2D holographic photonic quasicrystal are approximately similar with the developed analytical model based on cavity coupling effect. Moreover, the lasing patterns of the 2D CQDs photonic quasicrystal laser exhibit a symmetrical polarization effect by rotating the axis of polarization with a difference of 1200 angle in a round trip. We expect that our findings will provide a new approach to customize the 2D CQDs holographic photonic quasicrystal lasers in the field of optoelectronic devices and miniature lasing systems.
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Chu S, Hayat A, Cao F, Zhai T. Single-Mode Lasing in Polymer Circular Gratings. Materials (Basel) 2021; 14:2318. [PMID: 33947056 PMCID: PMC8124405 DOI: 10.3390/ma14092318] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022]
Abstract
In recent years, conjugated polymers have become the materials of choice to fabricate optoelectronic devices, owing to their properties of high absorbance, high quantum efficiency, and wide luminescence tuning ranges. The efficient feedback mechanism in the concentric ring resonator and its circularly symmetric periodic geometry combined with the broadband photoluminescence spectrum of the conjugated polymer can generate a highly coherent output beam. Here, the detailed design of the ultralow-threshold single-mode circular distributed feedback polymer laser is presented with combined fabrication processes such as electron beam lithography and the spin-coating technique. We observe from the extinction spectra of the circular gratings that the transverse electric mode shows no change with the increase of incident beam angle. The strong enhancement of the conjugated polymer photoluminescence spectra with the circular periodic resonator can reduce the lasing threshold about 19 µJ/cm2. A very thin polymer film of about 110 nm is achieved with the spin-coating technique. The thickness of the gain medium can support only the zero-order transverse electric lasing mode. We expect that such a low threshold lasing device can find application in optoelectronic devices.
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Affiliation(s)
- Saisai Chu
- State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China;
| | - Anwer Hayat
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; (A.H.); (F.C.)
| | - Fengzhao Cao
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; (A.H.); (F.C.)
| | - Tianrui Zhai
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; (A.H.); (F.C.)
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36
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Xu Z, Zhai T, Shi X, Tong J, Wang X, Deng J. Multifunctional Sensing Based on an Ultrathin Transferrable Microring Laser. ACS Appl Mater Interfaces 2021; 13:19324-19331. [PMID: 33861082 DOI: 10.1021/acsami.1c03123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An ultrathin-film microring laser was fabricated using inkjet printing and a simple lift-off technique. Whispering-gallery-mode lasing was observed under optically pumped conditions in the film. The freestanding laser can be transferred to arbitrary surfaces for multifunctional applications, such as acoustic and relative humidity sensing. Using the first eigenmode of a membrane vibration, an acoustic sensor with a 0.15 Pa limit of detection was demonstrated via laser bandwidth broadening. A relative humidity sensor with a 1.1% limit of detection via wavelength shifts was demonstrated by placing the device on an optical fiber facet. These cost-effective, transferrable, multifunctional laser sensors will have many additional applications.
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Affiliation(s)
- Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaoyu Shi
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Junhua Tong
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Xiaolei Wang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Jinxiang Deng
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
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Wang X, Sun X, Cui S, Yang Q, Zhai T, Zhao J, Deng J, Ruotolo A. Physical Investigations on Bias-Free, Photo-Induced Hall Sensors Based on Pt/GaAs and Pt/Si Schottky Junctions. Sensors (Basel) 2021; 21:s21093009. [PMID: 33923008 PMCID: PMC8123269 DOI: 10.3390/s21093009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/09/2021] [Accepted: 04/23/2021] [Indexed: 11/27/2022]
Abstract
Hall-effect in semiconductors has wide applications for magnetic field sensing. Yet, a standard Hall sensor retains two problems: its linearity is affected by the non-uniformity of the current distribution; the sensitivity is bias-dependent, with linearity decreasing with increasing bias current. In order to improve the performance, we here propose a novel structure which realizes bias-free, photo-induced Hall sensors. The system consists of a semi-transparent metal Pt and a semiconductor Si or GaAs to form a Schottky contact. We systematically compared the photo-induced Schottky behaviors and Hall effects without net current flowing, depending on various magnetic fields, light intensities and wavelengths of Pt/GaAs and Pt/Si junctions. The electrical characteristics of the Schottky photo-diodes were fitted to obtain the barrier height as a function of light intensity. We show that the open-circuit Hall voltage of Pt/GaAs junction is orders of magnitude lower than that of Pt/Si, and the barrier height of GaAs is smaller. It should be attributed to the surface states in GaAs which block the carrier drifting. This work not only realizes the physical investigations of photo-induced Hall effects in Pt/GaAs and Pt/Si Schottky junctions, but also opens a new pathway for bias-free magnetic sensing with high linearity and sensitivity comparing to commercial Hall-sensors.
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Affiliation(s)
- Xiaolei Wang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
- Correspondence:
| | - Xupeng Sun
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Shuainan Cui
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Qianqian Yang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Jinliang Zhao
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Jinxiang Deng
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (X.S.); (S.C.); (Q.Y.); (T.Z.); (J.Z.); (J.D.)
| | - Antonio Ruotolo
- Department of Natural Sciences, Florida Polytechnic University, 4700 Research Way, Lakeland, FL 33805, USA;
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Wang X, Pan D, Zeng Q, Chen X, Wang H, Zhao D, Xu Z, Yang Q, Deng J, Zhai T, Wu G, Liu E, Zhao J. Robust anomalous Hall effect and temperature-driven Lifshitz transition in Weyl semimetal Mn 3Ge. Nanoscale 2021; 13:2601-2608. [PMID: 33481982 DOI: 10.1039/d0nr07946d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Topological Weyl semimetals have attracted considerable interest because they manifest underlying physics and device potential in spintronics. Large anomalous Hall effect (AHE) in non-collinear antiferromagnets (AFMs) represents a striking Weyl phase, which is associated with Bloch-band topological features. In this work, we report robust AHE and Lifshitz transition in high-quality Weyl semimetal Mn3Ge thin film, comprising stacked Kagome lattice and chiral antiferromagnetism. We successfully achieved giant AHE in our Mn3Ge film, with a strong Berry curvature enhanced by the Weyl phase. The enormous coercive field HC in our AHE curve at 5 K reached an unprecedented 5.3 T among hexagonal Mn3X systems. Our results provide direct experimental evidence of an electronic topological transition in the chiral AFMs. The temperature was demonstrated to play an efficient role in tuning the carrier concentration, which could be quantitatively determined by the two-band model. The electronic band structure crosses the Fermi energy level and leads to the reversal of carrier type around 50 K. The results not only offer new functionality for effectively modulating the Fermi level location in topological Weyl semimetals but also present a promising route of manipulating the carrier concentration in antiferromagnetic spintronic devices.
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Affiliation(s)
- Xiaolei Wang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. and College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Dong Pan
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
| | - Qingqi Zeng
- State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xue Chen
- Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
| | - Hailong Wang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
| | - Duo Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
| | - Zhiyang Xu
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Qianqian Yang
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Jinxiang Deng
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China
| | - Guangheng Wu
- State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Enke Liu
- State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianhua Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
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Zhang S, Zhai T, Cui L, Shi X, Ge K, Liang N, Hayat A. Tunable WGM Laser Based on the Polymer Thermo-Optic Effect. Polymers (Basel) 2021; 13:E205. [PMID: 33430040 PMCID: PMC7827802 DOI: 10.3390/polym13020205] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/07/2021] [Accepted: 01/07/2021] [Indexed: 11/19/2022] Open
Abstract
In this work, the thermo-optic effect in polymers was used to realize a temperature-tunable whispering-gallery-mode laser. The laser was fabricated using a capillary tube filled with a light-emitting conjugated polymer solution via the capillary effect. In the whispering-gallery-mode laser emission wavelength can be continuously tuned to about 19.5 nm using thermo-optic effect of polymer. The influence of different organic solvents on the tuning rate was studied. For a typical lasing mode with a bandwidth of 0.08 nm, a temperature-resolved tuning rate of ~1.55 nm/°C was obtained. The two-ring coupling effect is responsible for the suppression of the WGM in the micro-cavity laser. The proposed laser exhibited good reversibility and repeatability as well as a sensitive response to temperature, which could be applied to the design of photothermic and sensing devices.
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Affiliation(s)
| | - Tianrui Zhai
- College of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing 100124, China; (S.Z.); (L.C.); (X.S.); (K.G.); (N.L.); (A.H.)
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40
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Tong J, Shi X, Niu L, Zhang X, Chen C, Han L, Zhang S, Zhai T. Dual-color plasmonic random lasers for speckle-free imaging. Nanotechnology 2020; 31:465204. [PMID: 32845872 DOI: 10.1088/1361-6528/abaadc] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A dual-color plasmonic random laser under single-excitation is achieved in an ultrathin membrane doped with binary quantum dots and gold nanorods. The gold nanorods tune the luminescence lifetime and emission efficiency of quantum dots. Under single excitation, low-threshold random lasing is observed. Green random lasing at 547 nm is 'turned on' and red random lasing at 630 nm is greatly enhanced by the transversal and longitudinal surface plasmon resonance of the gold nanorods, respectively. Speckle-free color imaging is achieved by using the proposed dual-color random laser source. These properties would facilitate the development of random lasers in fields of illumination and imaging.
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Affiliation(s)
- Junhua Tong
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, People's Republic of China
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41
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Zhai T, Wesseling F, Langendijk J, Shi Z, Kalendralis P, Van Dijk L, Hoebers F, Steenbakkers R, Dekker A, Wee L, Sijtsema N. PD-0542: External validation of individual nodal failure prediction models including radiomics in HNC. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00564-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Guo J, Zhai T, Steenbakkers R, Both S, Langendijk J, Van Ooijen P, Sijtsema N. PO-1764: Prognostic outcome prediction for head and neck cancer patients using convolutional neural networks. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01782-5] [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: 10/22/2022]
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43
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Zeng C, Zhai T, Chen J, Guo L, Huang B, Liu G, Zhuang T, Liu W, Luo T, Wu Y, Peng G, Chen C. PO-1560: Contrast-enhanced CT-based radiomics nomogram predicts esophageal cancer survival after radiotherapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01578-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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44
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Liu J, Guo X, Zhai T, Shu A, Zhao L, Liu Z, Zhang S. Genome-wide identification and characterization of microRNAs responding to ABA and GA in maize embryos during seed germination. Plant Biol (Stuttg) 2020; 22:949-957. [PMID: 32526094 DOI: 10.1111/plb.13142] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
MicroRNAs (miRNAs) are an important class of non-coding small RNAs that regulate the expression of target genes through mRNA cleavage or translational inhibition. Previous studies have revealed their roles in regulating seed dormancy and germination in model plants such as Arabidopsis thaliana, rice (Oryza sativa) and maize (Zea mays). However, the miRNA response to exogenous gibberellic acid (GA) and abscisic acid (ABA) during seed germination in maize has yet to be explored. In this study, small RNA libraries were generated and sequenced from maize embryos treated with GA, ABA or double-distilled water as control. A total of 247 miRNAs (104 known and 143 novel) were identified, of which 45 known and 53 novel miRNAs were differentially expressed in embryos in the different treatment groups. In total, 74 (37 up-regulated and 37 down-regulated) and 55 (23 up-regulated and 32 down-regulated) miRNAs were expressed in response to GA and to ABA, respectively, and a total of 18 known and 38 novel miRNAs displayed differential expression between the GA- and ABA-treated groups. Using bioinformatics tools, we predicted the target genes of the differentially expressed miRNAs. Using GO enrichment and KEGG pathway analysis of these targets, we showed that miRNAs differentially expressed in our samples affect genes encoding proteins involved in the peroxisome, ribosome and plant hormonal signalling pathways. Our results indicate that miRNA-mediated gene expression influences the GA and ABA signalling pathways during seed germination.
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Affiliation(s)
- J Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
- Institute of Molecular Breeding for Maize, Qilu Normal University, Jinan, China
| | - X Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
| | - T Zhai
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
| | - A Shu
- Rice Research Institute of Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - L Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
| | - Z Liu
- Institute of Soil and Fertilizer & Resource and Environment, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - S Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
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45
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Shi X, Ge K, Tong JH, Zhai T. Low-cost biosensors based on a plasmonic random laser on fiber facet. Opt Express 2020; 28:12233-12242. [PMID: 32403721 DOI: 10.1364/oe.392661] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
Low-cost and miniaturized biosensors are key factors leading to the possibility of portable and integrated biomedical system, which play an important role in clinical medicine and life sciences. Random lasers with simple structures provide opportunities for detecting biomolecules. Here, low-cost biosensors on fiber facet for label-free detecting biomolecules are demonstrated based on a plasmonic random laser. The random laser is achieved resorting to a self-assembled plasmonic scattering structure of Ag nanoparticles and polymer film on fiber facet. Refractive index sensitivity and near-surface sensitivity of the biosensor are systematically studied. Furthermore, the biosensor is used to detect IgG through specific binding to protein A, exhibiting the detecting limit of 0.68 nM. It is believed that this work may promote the applications of a plasmonic random laser bio-probe in portable or integrated medical diagnostic platforms, and provide fundamental understanding for the life science.
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46
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Xu Z, Tong J, Shi X, Deng J, Zhai T. Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity. Polymers (Basel) 2020; 12:E656. [PMID: 32183114 PMCID: PMC7183060 DOI: 10.3390/polym12030656] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 11/17/2022] Open
Abstract
A compound cavity was proposed to achieve both whispering gallery mode (WGM) lasing and random lasing. The WGM-random compound cavity consisted of a random structure with an annular boundary, which was fabricated by a method combining both inkjet printing and metal-assisted chemical etching methods. An ultrathin polymer membrane was attached to the WGM-random compound cavity, forming a polymer laser device. A transformation from WGM lasing to random lasing was observed under optical pumping conditions. The laser performance could be easily tailored by changing the parameter of the WGM-random compound cavity. These results provide a new avenue for the design of integrated light sources for sensing applications.
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Affiliation(s)
| | | | | | - Jinxiang Deng
- College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; (Z.X.); (J.T.); (X.S.)
| | - Tianrui Zhai
- College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; (Z.X.); (J.T.); (X.S.)
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Abstract
Considerable research efforts have been devoted to the investigation of distributed feedback (DFB) organic lasing in photonic crystals in recent decades. It is still a big challenge to realize DFB lasing in complex photonic crystals. This review discusses the recent progress on the DFB organic laser based on one-, two-, and three-dimensional photonic crystals. The photophysics of gain materials and the fabrication of laser cavities are also introduced. At last, future development trends of the lasers are prospected.
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Affiliation(s)
- Yulan Fu
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology, Beijing, 100124, China
| | - Tianrui Zhai
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology, Beijing, 100124, China.
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48
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Zhang S, Cui LB, Zhang X, Tong JH, Zhai T. Tunable polymer lasing in chirped cavities. Opt Express 2020; 28:2809-2817. [PMID: 32121961 DOI: 10.1364/oe.382536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/09/2020] [Indexed: 06/10/2023]
Abstract
Continuously tunable polymer lasing was achieved in one-dimensional, two-dimensional, and compound chirped cavities. The chirped cavity was simply fabricated by using interference lithography and spin coating. Two-dimensional and compound chirped cavities were obtained by employing oblique exposure and double exposure, respectively. The tunability range of two-dimensional chirped cavities was much wider than that of one-dimensional chirped cavities, which varied from 557 nm to 582 nm. The interaction between lasing modes was studied in the compound cavity by introducing an additional nanostructure into the two-dimensional chirped cavities. The threshold of the compound chirped cavities changed with the coupling strength between lasing modes. These results may be helpful for designing compact polymer laser sources.
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49
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Xu Z, Zhang H, Chen C, Aziz G, Zhang J, Zhang X, Deng J, Zhai T, Zhang X. A silicon-based quantum dot random laser. RSC Adv 2019; 9:28642-28647. [PMID: 35529661 PMCID: PMC9071192 DOI: 10.1039/c9ra04650j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/29/2019] [Indexed: 12/21/2022] Open
Abstract
Herein, a quantum dot random laser was achieved using a silicon nanowire array. The silicon nanowire array was grown by a metal-assisted chemical etching method. A colloidal quantum dot solution was spin-coated on silicon nanowires to form the random laser. The performance of the random laser was controlled by the resistivity of silicon wafers and the length of silicon nanowires. A transition from incoherent random lasing to coherent random lasing was obtained by increasing the resistivity of the silicon wafers. The random lasing threshold increased with an increase in the length of the silicon nanowires. These results may be useful to explore high-performance silicon-based random lasers. A silicon-based quantum dot random laser fabricated by a metal-assisted chemical etching method.![]()
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Affiliation(s)
- Zhiyang Xu
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Hao Zhang
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Chao Chen
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Gohar Aziz
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Jie Zhang
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Xiaoxia Zhang
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Jinxiang Deng
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Tianrui Zhai
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
| | - Xinping Zhang
- Institute of Information Photonics Technology, College of Applied Sciences, Beijing University of Technology Beijing 100124 China
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50
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Jia X, Zhai T, Wang B, Zhang J, Zhang F. The MAGI2 gene polymorphism rs2160322 is associated with Graves' disease but not with Hashimoto's thyroiditis. J Endocrinol Invest 2019; 42:843-850. [PMID: 30535759 DOI: 10.1007/s40618-018-0990-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 11/25/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE Autoimmune thyroid diseases (AITDs) are chronic organ-specific autoimmune disorders, predominantly including Graves' disease (GD), and Hashimoto's thyroiditis (HT). This study aimed to investigate whether single-nucleotide polymorphisms (SNPs) in MAGI2 and MAGI3 gene contributed to the etiology of AITDs. METHODS We conducted a case-control study including 1001 patients with AITDs (625 GD, 376 HT) and 846 healthy controls. Subgroup analyses in GD and HT were also performed. RESULTS The genotypes of rs2160322 in MAGI2 showed a borderline association with AITDs (P = 0.048), and they had a strong correlation with GD (P = 0.012). The frequency of the minor allele G of rs2160322 was significantly higher in the GD patients than in the controls (P = 0.027; OR 1.91; 95% CI 1.020-1.391), especially for GD females (P = 0.008; OR 1.304; 95% CI 1.072-1.587), and those who had positive family history (P = 0.011; OR 1.412; 95% CI 1.083-1.843). For genetic model analysis, the recessive model and homozygous model of rs2160322 showed significant associations with AITDs (P = 0.009; P = 0.019) and GD (P = 0.004; P = 0.005). Nevertheless, our study could not identify any relationship between these SNPs and HT. Due to the low mutation rate of rs1343126 in MAGI3, we were unable to obtain a credible conclusion on its association with AITDs. CONCLUSIONS Our study identified that MAGI2 rs2160322 was strongly associated with GD susceptibility. The potential dysfunction of tight junction proteins and aberrant epithelial barrier caused by abnormal MAGI2 expression may be a novel mechanism of GD.
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Affiliation(s)
- X Jia
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longhang Road, Jinshan District, Shanghai, 201508, China
| | - T Zhai
- Department of Endocrinology and Metabolism, Zhongshan Hospital of Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai, 200032, China
| | - B Wang
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longhang Road, Jinshan District, Shanghai, 201508, China
| | - J Zhang
- Department of Endocrinology, Jinshan Hospital of Fudan University, No. 1508 Longhang Road, Jinshan District, Shanghai, 201508, China.
| | - F Zhang
- Department of Emergency, Jinshan Hospital of Fudan University, No. 1508 Longhang Road, Jinshan District, Shanghai, 201508, China.
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