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Microdisplays: Mini-LED, Micro-OLED, and Micro-LED

Advanced optical materials 2024年第7期12卷

作者： Miao, Wen-Chien Hsiao, Fu-He Sheng, Yujia Lee, Tzu-Yi Hong, Yu-Heng Tsai, Chun-Wei Chen, Hung-Lung Liu, Zhaojun Lin, Chun-Liang Chung, Ren-Jei Ye, Zhi-Ting Horng, Ray-Hua Chen, Shih-Chen Kuo, Hao-Chung He, Jr-Hau Semiconductor Research Center Hon Hai Research Institute Taipei11492 Taiwan Department of Electrophysics College of Science National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Department of Materials Science and Engineering City University of Hong Kong 999077 Hong Kong Department of Photonics Institute of Electro-Optical Engineering National Yang Ming Chiao Tung University Hsinchu30010 Taiwan K-Jet Laser Tek Inc. Hsinchu30010 Taiwan Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen518055 China Taipei10608 Taiwan Department of Mechanical Engineering Advanced Institute of Manufacturing with High-Tech Innovations National Chung Cheng University 168 University Rd. Min-Hsiung Chia-Yi62102 Taiwan Institute of Electronics National Yang-Ming Chiao Tung University Hsinchu30010 Taiwan

The field of next-generation microdisplays is flourishing. Relevant display technologies, such as mini-light emission diodes (mini-LEDs), micro-organic light emission diodes (micro-OLEDs), and micro-light emission diodes (micro-LEDs) are thus in the urgent stage of development. From this perspective, comprehensive and systematical analyzes are conducted for the aforesaid microdisplay configurations. A holistic view of microdisplay technologies is developed with the corresponding performance metrics, providing a path for miscellaneous scenarios. Among these scenarios, the applications in augmented reality (AR), virtual reality (VR), wearable devices, and head-up displays (HUD) are currently attracting considerable attention for deeper human-digital interactions. However, there is a multiplicity of obstacles and challenges hindering such development. Nevertheless, recent advances in microdisplay technologies hold tremendous promise for the paradigms of these applications, taking a leap forward for next-generation microdisplays. This review presents perspectives, relevant materials, and the technology landscape for such ongoing display technologies, offering guidance on the design of advanced microdisplays. © 2023 Wiley-VCH GmbH.

关键词： Augmented reality

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Observation of Zeeman splitting effect in a laser-driven coil

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Matter and Radiation at Extremes 2022年第2期7卷 18-24页

作者： Baojun Zhu Zhe Zhang Chang Liu Dawei Yuan Weiman Jiang Huigang Wei Fang Li Yihang Zhang Bo Han Lei Cheng Shangqing Li Jiayong Zhong Xiaoxia Yuan Bowei Tong Wei Sun Zhiheng Fang Chen Wang Zhiyong Xie Neng Hua Rong Wu Zhanfeng Qiao Guiyun Liang Baoqiang Zhu Jianqiang Zhu Shinsuke Fujioka Yutong Li Beijing National Laboratory of Condensed Matter Physics Institute of PhysicsCASBeijing 100190China Institute of Laser Engineering Osaka University2-6 Yamada-okaSuitaOsakaJapan Songshan Lake Materials Laboratory DongguanGuangdong 523808China Department of Advanced Photon Research Kansai Photon Science InstituteNational Institutes for Quantum and Radiological Science and Technology619-0215 KyotoJapan Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Department of Astronomy Beijing Normal UniversityBeijing 100875China Center for Advanced Material Diagnostic Technology College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China Shanghai Institute of Laser Plasma Shanghai 201800China National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

The Zeeman splitting effect is observed in a strong magnetic field generated by a laser-driven *** expanding plasma from the coil wire surface is concentrated at the coil center and interacts with the simultaneously generated magnetic *** Cu I spectral lines at wavelengths of 510.5541,515.3235,and 521.8202 nm are detected and *** splittings of spectral lines are used to estimate the magnetic field strength at the coil center as∼31.4±15.7 T at a laser intensity of∼5.6310^(15) W/cm^(2),which agrees well with measurements using a B-dot *** other plasma parameters of the central plasma disk are also *** temperature is evaluated from the Cu I spectral line intensity ratio,while the electron density is estimated from the Stark broadening effect.

关键词： laser splitting effect

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Probing the fractional quantum Hall phases in valley-layer locked bilayer MoS2

arXiv

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arXiv 2023年

作者： Zhao, Siwen Huang, Jinqiang Crépel, Valentin Wu, Xingguang Zhang, Tongyao Wang, Hanwen Han, Xiangyan Li, Zhengyu Xi, Chuanying Pan, Senyang Wang, Zhaosheng Watanabe, Kenji Taniguchi, Takashi Sacépé, Benjamin Zhang, Jing Wang, Ning Lu, Jianming Regnault, Nicolas Han, Zheng Vitto Liaoning Academy of Materials Shenyang110167 China Center for Computational Quantum Physics Flatiron Institute New YorkNY10010 United States Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China School of Material Science and Engineering University of Science and Technology of China Anhui230026 China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Optoelectronics Shanxi University Taiyuan030006 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan030006 China State Key Laboratory for Mesoscopic Physics School of Physics Peking University Beijing100871 China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory The Chinese Academy of Science Anhui Hefei230031 China Research Center for Electronic and Optical Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Université Grenoble Alpes CNRS Grenoble INP Institut Néel Grenoble38000 France Department of Physics The Center for 1D/2D Quantum Materials The Hong Kong University of Science and Technology Hong Kong Laboratoire de Physique de L’Ecole normale supérieure ENS Université PSL CNRS Sorbonne Université Université Paris-Diderot Sorbonne Paris Cité Paris75005 France Department of Physics Columbia University New YorkNY10027 United States

Semiconducting transition-metal dichalcogenides (TMDs) exhibit high mobility, strong spin–orbit coupling, and large effective masses, which simultaneously leads to a rich wealth of Landau quantizations and inherently strong electronic interactions. However, in spite of their extensively explored Landau levels (LL) structure, probing electron correlations in the fractionally filled LL regime has not been possible due to the difficulty of reaching the quantum limit. Here, we report evidence for fractional quantum Hall (FQH) states at filling fractions 4/5 and 2/5 in the lowest LL of bilayer MoS2, manifested in fractionally quantized transverse conductance plateaus accompanied by longitudinal resistance minima. We further show that the observed FQH states sensitively depend on the dielectric and gate screening of the Coulomb interactions. Our findings establish a new FQH experimental platform which are a scarce resource: an intrinsic semiconducting high mobility electron gas, whose electronic interactions in the FQH regime are in principle tunable by Coulomb-screening engineering, and as such, could be the missing link between atomically thin graphene and semiconducting quantum wells. © 2023, CC BY.

关键词： Molybdenum compounds

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Widely Tunable Berry Curvature in the Magnetic Semimetal Cr1+δTe2

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Advanced materials 2023年第12期35卷

作者： Fujisawa, Yuita Pardo-Almanza, Markel Hsu, Chia-Hsiu Mohamed, Atwa Yamagami, Kohei Krishnadas, Anjana Chang, Guoqing Chuang, Feng-Chuan Khoo, Khoong Hong Zang, Jiadong Soumyanarayanan, Anjan Okada, Yoshinori Okinawa904-0495 Japan Department of Physics National Sun Yat-sen University Kaohsiung80424 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore637371 Singapore Center for Theoretical and Computational Physics National Sun Yat-sen University Kaohsiung80424 Taiwan Institute of High Performance Computing Agency for Science Technology and Research Singapore138632 Singapore Department of Physics and Astronomy University of New Hampshire DurhamNH 03824 United States Materials Science Program University of New Hampshire DurhamNH 03824 United States Department of Physics National University of Singapore Singapore117551 Singapore Institute of Materials Research and Engineering Agency for Science Technology and Research Singapore138634 Singapore

Magnetic semimetals have increasingly emerged as lucrative platforms hosting spin-based topological phenomena in real and momentum spaces. Cr1+δTe2 is a self-intercalated magnetic transition metal dichalcogenide (TMD), which exhibits topological magnetism and tunable electron filling. While recent studies have explored real-space Berry curvature effects, similar considerations of momentum-space Berry curvature are lacking. Here, the electronic structure and transport properties of epitaxial Cr1+δTe2 thin films are systematically investigated over a range of doping, δ (0.33 – 0.71). Spectroscopic experiments reveal the presence of a characteristic semi-metallic band region, which shows a rigid like energy shift with δ. Transport experiments show that the intrinsic component of the anomalous Hall effect (AHE) is sizable and undergoes a sign flip across δ. Finally, density functional theory calculations establish a link between the doping evolution of the band structure and AHE: the AHE sign flip is shown to emerge from the sign change of the Berry curvature, as the semi-metallic band region crosses the Fermi energy. These findings underscore the increasing relevance of momentum-space Berry curvature in magnetic TMDs and provide a unique platform for intertwining topological physics in real and momentum spaces. © 2023 The Authors. Advanced materials published by Wiley-VCH GmbH.

关键词： Density functional theory

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Simultaneous generation of controllable double white light lasers by focusing an intense femtosecond laser pulse in air

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Chinese Optics Letters 2020年第12期18卷 20-24页

作者： Yaoxiang Liu Tie-Jun Wang Na Chen Hao Guo Haiyi Sun Lu Zhang Zheng Qi Yuxin Leng Zhanshan Wang Ruxin Li MOE Key Laboratory of Advanced Micro-structured Materials Institute of Precision Optical EngineeringSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Science and Technology on Space Physics Laboratory Beijing 100076China

We report on a simultaneous generation of double white light lasers through filamentation by focusing a femtosecond laser pulse. The appearance of the two white light lasers can be controlled by tilting the focusing lens. The spectral bandwidth and the pulse energy of the double white light lasers were controlled by tuning laser filamenting pulse energy and polarization. Two white light lasers with pulse energies of 1.54 m J and 1.84 m J,respectively, were generated with the pump laser energy of 7.43 m J. Besides being beneficial in understanding the multiple white light lasers generation process through multiple filamentation and its control, the results are also valuable for white light laser-based applications.

关键词： filamentation white light laser polarization

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high-entropy selenide catalyst for degradation of organic pollutants

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Journal of Electroanalytical Chemistry 2024年 957卷

作者： Li, Chia-Tzu Chiang, Ching-Yu Chiu, Ching-Ting Yu, Mei-Ling Lo, An-Ya Lin, Wei-Chun Lee, Hyeonseok Lu, Ying-Tsang Wu, Hsiang-Chiu Hung, Wei-Hsuan Institute of Materials Science and Engineering National Central University No. 300 Zhong-da Rd. Zhongli District. Taoyuan City320 Taiwan No. 101 Hsin-Ann Road Hsinchu Science Park Hsinchu300 Taiwan National Chin-Yi University of Technology No.57 Sec. 2 Zhongshan Rd. Taiping Dist. Taichung411030 Taiwan Department of Photonics National Sun Yat-Sen University No. 70 Lienhai Rd. Kaohsiung80424 Taiwan Strong Biotech Corporation 7f. No. 32 Sec. 1 Chenggong Rd. Nangang Dist. Taipei City11570 Taiwan Department of Mechanical Engineering National Chung Cheng University No.168 Sec. 1 University Rd. Chiayi Minhsiung621301 Taiwan High Entropy Materials Center National Tsing Hua University No. 101 Sec. 2 Guangfu Rd. East Dist. Hsinchu City300 Taiwan Institute of Electro-Optical Engineering National Taiwan Normal University Taipei11677 Taiwan

In this study, pollution from sewage was addressed using a novel high-entropy material to decompose organic pollutants containing azo groups. Se_(AlCrCuFeNi) (Se_HEC) nanomaterials were employed as an active catalyst to restore organic pollution in aqueous solutions by using the electro-Fenton technique. The efficacy of Se_HEC catalysts in degrading pollutants during the electro-Fenton reaction and the potential of functionalized high-entropy materials to decompose pollutants were investigated. The Se_HEC material was synthesized through rapid calcination followed by selenization. This Se_HEC cathode demonstrated a remarkable removal efficiency of 98% for methyl orange in aqueous solutions and high stability in an acidic environment with a pH of 3. Additionally, the effects of various parameters, such as applied current and pH, were assessed. The results revealed that an increase in the current led to a higher reaction rate for the entire process, with the optimal conditions occurring at pH 3. The potential methyl orange degradation pathway was elucidated through a reactive oxygen species (ROS) test conducted during the electro-Fenton process. © 2024 Elsevier B.V.

关键词： Electrocatalysis

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Designing quenching-driven crystalline-amorphous high-entropy oxide/hydroxide heterostructures for efficient oxygen evolution reaction

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Journal of Alloys and Compounds 2025年 1032卷

作者： Zheng, Zhichuan Sun, Ning He, Xian Deng, Bohan Pao, Chih-Wen Huang, Wei-Hsiang Liu, Hongyi Wang, Ruyue Yu, Runze Lei, Ming Huang, Kai State Key Laboratory of Information Photonics and Optical Communications School of Physical Science and Technology Beijing University of Posts and Telecommunications Beijing100876 China Center for High Pressure Science and Technology Advanced Research Beijing100193 China State Key Laboratory of New Ceramic Materials School of Materials Science and Engineering Tsinghua University Beijing100084 China National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu300092 Taiwan Beijing Institute of Smart Energy Beijing102209 China State Key Laboratory of Information Photonics and Optical Communications School of Integrated Circuits Beijing University of Posts and Telecommunications Beijing100876 China

Abundant defects and plentiful active sites make amorphous hydroxide materials promising alternatives to replace commercial RuO2 as electrocatalysts in alkaline oxygen evolution reactions (OER). Nevertheless, the inherently poor conductivity, caused by long-range disorder, limits their broader application in alkaline water electrolysis. In this work, we developed a quenching-driven strategy to controllably design heterostructures of crystalline high-entropy oxides and amorphous high-entropy hydroxides supported on an amorphous carbon composite. The amorphous substrate structure stabilizes metal compound clusters on the surface of the materials, while crystalline oxides modify the electronic structure of the amorphous phase. X-ray absorption spectroscopy (XAS) indicate that high-valence Ru doping increases the oxidation state of the transition metals. In situ Raman spectroscopy further reveals that, after Ru doping, the higher oxidation states of transition metals more readily convert into the active phase of metal oxyhydroxides during the OER. Notably, the synthesized crystalline-amorphous high-entropy oxide/hydroxide heterostructure electrocatalysts, RuMnFeCoNiOx/RuMnFeCoNiOyHz@C (Ru-HEO/HEH@C), achieve an overpotential of 244 mV at a current density of 10 mA cm−2 and exhibit a Tafel slope of 38.55 mV dec−1, demonstrating superior activity compared to commercial RuO2 samples. Furthermore, Ru-HEO/HEH@C demonstrates excellent electrochemical durability, with chronoamperometric measurements revealing an ultra-low degradation rate of 0.0386 mV h−1 over 360 hours of continuous operation. This work offers new insights into optimizing the electronic structure and OER activity of amorphous hydroxides through structural design. © 2025

关键词： Iron

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Widely Tunable Berry curvature in the Magnetic Semimetal Cr1+δTe2

arXiv

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arXiv 2022年

作者： Fujisawa, Y. Pardo-Almanza, M. Hsu, C.H. Mohamed, A. Yamagami, K. Krishnadas, A. Chuang, F.C. Khoo, K.H. Zang, J. Soumyanarayanan, A. Okada, Y. Okinawa904-0495 Japan Department of Physics National Sun Yat-Sen University Kaohsiung80424 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan Department of Physics National Tsing Hua University Hsinchu30013 Taiwan Institute of High Performance Computing Agency for Science Technology and Research 138632 Singapore Department of Physics and Astronomy University of New Hampshire DurhamNH03824 United States Materials Science Program University of New Hampshire DurhamNH03824 United States Department of Physics National University of Singapore 117551 Singapore Institute of Materials Research and Engineering Agency for Science Technology and Research 138634 Singapore

Magnetic semimetals have increasingly emerged as lucrative platforms hosting spin-based topological phenomena in real- and momentum spaces. Cr1+δTe2 is a self-intercalated magnetic transition metal dichalcogenide (TMD), which exhibits topological magnetism, tunable electron filling, and magnetic frustration etc. While recent studies have explored real-space Berry curvature effects in this material, similar considerations of momentum-space Berry curvature have been lacking. Here, we systematically investigate the electronic structure and transport properties of epitaxial Cr1+δTe2 thin films over a wide range of doping, δ (0.33 - 0.71). Spectroscopic experiments reveal the presence of a characteristic semi-metallic band region near the Brillouin Zone edge, which shows a rigid band like energy shift as a function of δ. Transport experiments show that the intrinsic component of the anomalous Hall effect (AHE) is sizable, and undergoes a sign flip across δ. Finally, density functional theory calculations establish a causal link between the observed doping evolution of the band structure and AHE: the AHE sign flip is shown to emerge from the sign change of the Berry curvature, as the semi-metallic band region crosses the Fermi energy. Our findings underscore the increasing relevance of momentum-space Berry curvature in magnetic TMDs and provide a unique platform for intertwining topological physics in real and momentum spaces. © 2022, CC BY.

关键词： Density functional theory

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Single-shot Wide-field optical Section Imaging

arXiv

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arXiv 2021年

作者： Hu, Yuyao Liang, Dong Wang, Jing Xuan, Yaping Zhao, Fu Liu, Jun Li, Ruxin State Key Laboratory of High Field Laser Physics CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China University Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China School of Physics Science and Engineering Tongji University Shanghai200093 China Institute of Photonic Chips University of Shanghai for Science and Technology Shanghai200093 China Centre for Artificial-Intelligence Nanophotonics School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai200093 China

optical sectioning technology has been widely used in various fluorescence microscopes owing to its background removing capability. Here, a virtual HiLo based on edge detection (V-HiLo-ED) is proposed to achieve wide-field optical sectioning, which requires only single wide-field image. Compared with conventional optical sectioning technologies, its imaging speed can be increased by at least twice, meanwhile maintaining nice optical sectioning performance, low cost, and excellent artifact suppression capabilities. Furthermore, the new V-HiLo-ED can also be extended to other non-fluorescence imaging fields. This simple, cost-effective and easy-to-extend method will benefit many research and application fields that needs to remove out-of-focus blurred images. © 2021, CC BY.

关键词： Edge detection

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Correction to: Spectral broadening of a burst-mode 100 W Nd-doped picosecond amplifer in a multi-pass cell device

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Applied Physics B 2023年第7期129卷 1-1页

作者： Song, Jiajun Peng, Yujie Luo, Guangxin Shen, Liya Sun, Jianyu Liu, Yinfen Leng, Yuxin State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science Shanghai Institute of Optics and Fine Mechanics (SIOM) Chinese Academy of Sciences (CAS) Shanghai China Department of Optics and Optical Engineering University of Science and Technology of China Hefei China School of Physical Science and Technology ShanghaiTech University Shanghai China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China

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