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Direct observation of chaotic resonances in optical microcavities

Light(science & Applications) 2021年第8期10卷 1455-1461页

作者： Shuai Wang Shuai Liu Yilin Liu Shumin Xiao Zi Wang Yubin Fan Jiecai Han Li Ge Qinghai Song Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of Technology(Shenzhen)Shenzhen 518055China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China. Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China. Department of Physics and Astronomy College of Staten IslandCUNYStaten IslandNY 10314USA. The Graduate Center CUNYNew YorkNY 10016USA

Optical microcavities play a significant role in the study of classical and quantum *** date,most experimental explorations of their internal wave dynamics have focused on the properties of their inputs and outputs,without directly interrogating the dynamics and the associated mode patterns *** a result,this key information is rarely retrieved with certainty,which significantly restricts the verification and understanding of the actual chaotic *** we demonstrate a simple and robust approach to directly and rapidly map the internal mode patterns in chaotic *** introducing a local index perturbation through a pump laser,we report a spectral response of optical microcavities that is proportional to the internal field *** this technique,chaotic modes with staggered mode spacings can be ***,a complete chaos assisted tunneling(CAT)and its time-reversed process are experimentally verified in the optical domain with unprecedented certainty.

关键词： motion chaotic reversed

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Recent advances in wireless epicortical and intracortical neuronal recording systems

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science China(Information sciences) 2022年第4期65卷 5-22页

作者： Bowen JI Zekai LIANG Xichen YUAN Honglai XU Minghao WANG Erwei YIN Zhejun GUO Longchun WANG Yuhao ZHOU Huicheng FENG Honglong CHANG Jingquan LIU Unmanned System Research Institute Northwestern Polytechnical University Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace School of Mechanical EngineeringNorthwestern Polytechnical University Collaborative Innovation Center of Northwestern Polytechnical University NEURACLE TECH (China) Co. Ltd. College of Electronics and Information Hangzhou Dianzi University Defense Innovation Institute Academy of Military Sciences (AMS) Tianjin Artificial Intelligence Innovation Center (TAIIC) National Key Laboratory of Science and Technology on Micro/Nano Fabrication Department of Micro/Nano ElectronicsShanghai Jiao Tong University

An implantable brain-computer interface(BCI) has proven to be effective in the field of sensory and motor function restoration and in the treatment of neurological disorders. Using a BCI recording system,we can transform current methods of human interaction with machines and the environment, especially to help those with cognitive and mobility disabilities regain mobility and reintegrate into society. However,most reported work has focused on a simple aspect of the whole system, such as electrodes, circuits, or data transmission, and only a very small percentage of systems are wireless. A miniature, lightweight, wireless,implantable microsystem is key to realizing long-term, real-time, and stable monitoring on freely moving animals or humans in their natural conditions. Here, we summarize typical wireless recording systems, from recording electrodes, processing chips and controllers, wireless data transmission, and power supply to the system-level package for either epicortical electrocorticogram(ECo G) or intracortical local field potentials(LFPs)/spike acquisition, developed in recent years. Finally, we conclude with our vision of challenges in next-generation wireless neuronal recording systems for chronic and safe applications.

关键词： wireless implant neuronal recording system recording electrodes processing chips wireless data transmission power supply system-level package

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Dispersion engineering and measurement in crystalline microresonators using a fiber ring etalon

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Photonics Research 2021年第11期9卷 2222-2229页

作者： XIAOBAO ZHANG GUOPING LIN TANG SUN QINGHAI SONG GUANGZONG XIAO HUI LUO Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System School of ScienceHarbin Institute of TechnologyShenzhen 518055China College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073China

Dispersion engineering and measurement are significant for nonlinear photonic applications using whispering gallery mode ***,the Kerr microresonator frequency comb as an important example has attracted a great amount of interest in research fields due to the potential capability of full integration on a chip.A simple and cost-efficient way for dispersion measurements is thereby in high demand for designing such a microcomb ***,we report a dispersion measurement approach using a fiber ring etalon *** free spectral range of the etalon is first measured through sideband modulation,and the dispersion of the etalon is inferred by binary function fitting during the dispersion *** method is demonstrated on two MgF_(2) disk *** results show good agreement with numerical simulations using the finite element *** engineering on such resonators is also numerically investigated.

关键词： fiber resonator Dispersion

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Applications of MXenes in human-like sensors and actuators

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nano Research 2023年第4期16卷 5767-5795页

作者： Jinbo Pang Songang Peng Chongyang Hou Xiao Wang Ting Wang Yu Cao Weijia Zhou Ding Sun Kai Wang Mark H.Rümmeli Gianaurelio Cuniberti Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinan 250022China Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresden 01069Germany Center for Advancing Electronics Dresden Technische Universität DresdenDresden 01069Germany Dresden Center for Computational Materials Science Technische Universität DresdenDresden 01062Germany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresden 01062Germany High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353China School of Bioengineering Qilu University of TechnologyShandong Academy of ScienceJinan 250353China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology(Ministry of Education) Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Weihai Innovation Research InstituteQingdao UniversityQingdao 266000China School of Electrical and Computer Engineering Jilin Jianzhu UniversityChangchun 130118China Institute for Complex Materials Leibniz Institute for Solid State and Materials Research Dresden(IFW Dresden)20 Helmholtz StrasseDresden 01069Germany College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key L

Human beings perceive the world through the senses of sight,hearing,smell,taste,touch,space,and *** first five senses are prerequisites for people to *** sensing organs upload information to the nervous systems,including the brain,for interpreting the surrounding ***,the brain sends commands to muscles reflexively to react to stimuli,including light,gas,chemicals,sound,and ***,as an emerging two-dimensional material,has been intensively adopted in the applications of various sensors and *** this review,we update the sensors to mimic five primary senses and actuators for stimulating muscles,which employ MXene-based film,membrane,and composite with other functional ***,a brief introduction is delivered for the structure,properties,and synthesis methods of ***,we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas,gas sensors,chemical biosensors,acoustic devices,and tactile sensors for electronic ***,the actuators of MXene-based composite are ***,future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot,which may induce prospects in accompanying healthcare and biomedical engineering applications.

关键词： MXenes sensors actuators gas sensors biosensors tactile sensors sound sensors artificial retina

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Field-free current-induced magnetization switching of a room temperature van der Waals magnet for neuromorphic computing

arXiv

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arXiv 2024年

作者： Zhou, Chenxi Guo, Zhe Li, Qifeng Zhang, Gaojie Wu, Hao Chen, Jinsen Li, Rongxin Zhang, Shuai Cao, Cuimei Xiong, Rui Chang, Haixin You, Long School of Integrated Circuits Wuhan National Laboratory for Optoelectronics Key Laboratory of Information Storage System Ministry of Education of China Huazhong University of Science and Technology Wuhan430074 China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen518000 China School of Microelectronics Hubei University Wuhan430062 China School of Integrated Circuits Wuhan430074 China Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education School of Physics and Technology Wuhan University Wuhan430072 China Center for Joining and Electronic Packaging State Key Laboratory of Material Processing and Die & Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China

Spin orbit torque (SOT) has become a promising approach to efficiently manipulate the magnetization switching in spintronic devices. As a main factor to impact the device performance, the high quality interface is essentially desired, which can be readily acquired by using the two-dimensional (2D) van der Waals (vdW) materials. Recently, a 2D ferromagnetic material Fe3GaTe2 has been discovered to possess the above-room-temperature Curie temperature and strong perpendicular magnetic anisotropy (PMA), providing an excellent candidate to build spintronic devices. On the other hand, an external magnetic field is necessary for the SOT-driven deterministic switching of perpendicular magnetization, which has become a block for the real applications. Here, we realize the field-free SOT switching of Fe3GaTe2 at room temperature based on the Fe3GaTe2/MnPt heterostructure. In addition, inspired by the superiority of 2D materials in 3D heterogeneous integration, we explore the potential of our device in the computing in memory (CIM). With the application of the current pulses, the gradual switching of our device at zero field imitates the function of artificial synapse in the convolutional neural network (CNN), achieving a high accuracy (~ 92.8%) pattern recognition. Our work proposes a feasible solution for field-free SOT switching in 2D vdW spintronic devices, which paves the way for applications in magnetic memory and neuromorphic computing. Copyright © 2024, The Authors. All rights reserved.

关键词： Van der Waals forces

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Janus graphene: A two-dimensional half-auxetic carbon allotrope with a nonchemical Janus configuration

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Physical Review B 2024年第12期109卷 L121402-L121402页

作者： Linfeng Yu Jianhua Xu Chen Shen Hongbin Zhang Xiong Zheng Huimin Wang Zhenzhen Qin Guangzhao Qin State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle College of Mechanical and Vehicle Engineering Hunan University Changsha 410082 People's Republic of China Institute of Materials Science Technical University of Darmstadt Darmstadt 64287 Germany Hunan Key Laboratory for Micro-Nano Energy Materials and Device and School of Physics and Optoelectronics Xiangtan University Xiangtan 411105 Hunan China School of Physics and Microelectronics Zhengzhou University Zhengzhou 450001 China Greater Bay Area Institute for Innovation Hunan University Guangzhou 511300 Guangdong Province People's Republic of China

We propose a nonchemical intrinsic Janus configuration and identify it in a pure sp2 hybridized carbon monolayer, termed Janus graphene. The spontaneous unilateral growth of carbon atoms drives the nonchemical Janus configuration in Janus graphene, which is totally different from the chemical effect in common Janus materials such as MoSSe. A structure-independent half-auxetic behavior is mapped in Janus graphene, that the structure maintains expansion whether stretched or compressed, which lies in the key role of the pz orbital. With the unique half-auxeticity that emerged in the nonchemical Janus configuration, Janus graphene enriches the functional carbon family as a promising candidate for micro/nanoelectronic device applications.

关键词： Crystal structure Poisson ratio 2-dimensional systems Graphene Janus particles Semiconductors First-principles calculations

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Conductive Porous MXene for Bionic,Wearable,and Precise Gesture Motion Sensors

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Research 2021年第1期2021卷 1391-1401页

作者： Shengshun Duan Yucheng Lin Zhehan Wang Junyi Tang Yinhui Li Di Zhu Jun Wu Li Tao Chang-Hwan Choi Litao Sun Jun Xia Lei Wei Baoping Wang Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and EngineeringSoutheast UniversityNanjing 210096China School of Materials Science and Engineering Southeast UniversityNanjing 211189China Center for 2D Materials Southeast UniversityNanjing 211189China Center for Advanced Materials and Manufacture Joint Research Institute of Southeast University and Monash UniversitySuzhou 215123China Department of Mechanical Engineering Stevens Institute of TechnologyHobokenNew Jersey 07030USA SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education Collaborative Innovation Center for Micro/Nano Fabrication Device and SystemSoutheast UniversityNanjing 210096China Center for Advanced Carbon Materials Southeast University and Jiangnan Graphene Research InstituteChangzhou 213100China

Reliable,wide range,and highly sensitive joint movement monitoring is essential for training activities,human behavior analysis,and human-machine ***,most current motion sensors work on the nano/microcracks induced by the tensile deformation on the convex surface of joints during joint movements,which cannot satisfy requirements of ultrawide detectable angle range,high angle sensitivity,conformability,and consistence under cyclic *** nature,scorpions sense small vibrations by allowing for compression strain conversion from external mechanical vibrations through crack-shaped slit ***,we demonstrated that ultraconformal sensors based on controlled slit structures,inspired by the geometry of a scorpion’s slit sensilla,exhibit high sensitivity(0.45%deg^(-1)),ultralow angle detection threshold(~15°),fast response/relaxation times(115/72 ms),wide range(15°~120°),and durability(over 1000 cycles).Also,a user-friendly,hybrid sign language system has been developed to realize Chinese and American sign language recognition and feedback through video and speech broadcasts,making these conformal motion sensors promising candidates for joint movement monitoring in wearable electronics and robotics technology.

关键词： durability conformal satisfy

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Dual-channel quantum meta-hologram for display

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Advanced Photonics Nexus 2024年第1期3卷 86-92页

作者： Yubin Fan Hong Liang Yuhan Wang Shufan Chen Fangxing Lai Mu Ku Chen Shumin Xiao Jensen Li Din Ping Tsai City University of Hong Kong Department of Electrical EngineeringHong KongChina City University of Hong Kong Centre for BiosystemsNeuroscienceand NanotechnologyHong KongChina City University of Hong Kong The State Key Laboratory of Terahertz and Millimeter WavesHong KongChina The Hong Kong University of Science and Technology Department of PhysicsHong KongChina The Hong Kong University of Science and Technology IAS Center for Quantum TechnologiesHong KongChina Harbin Institute of Technology(Shenzhen) Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemGuangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsShenzhenChina Pengcheng Laboratory ShenzhenChina

Quantum technologies rely on creating and manipulating entangled sources,which are essential for quantum information,communication,and *** integrating quantum technologies and all-dielectric metasurfaces,the performance of miniature display devices can be enhanced to a higher *** display technology,such as virtual reality display,has achieved original commercial success,and was initially applied to immersive games and interactive *** the consumer market has quickly adopted this technology,several areas remain for improvement,including concerns around bulkiness,dual-channel display,and noise ***,we experimentally realize a quantum meta-hologram concept demonstration of a miniature *** fabricate an ultracompact meta-hologram based on 1μm thick titanium dioxide(TiO_(2)).The meta-hologram can be remotely switched with heralding technique and is robust against noise with the quantum entangled *** platform can alter the miniature display channel by manipulating heralding photons’polarization,removing speckles and multiple reflective light noise,improving imaging contrast,and potentially decreasing device *** contrast increases from 0.36 dB under speckle noise influences to 6.8 dB in quantum correlation *** approach has the potential to miniaturize quantum displays and quantum communication devices.

关键词： quantum meta-hologram display metasurface dual channel

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A novel paper-based electrowetting device using cellulose paper and paraffin wax 26

A novel paper-based electrowetting device using cellulose pa...

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26th International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2022

作者： Li, He Yan, Zhibin Jin, Mingliang Zhou, Guofu Shui, Lingling Guangdong Provincial Key Laboratory of Optical Information Materials and Technology Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou510006 China Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology Chongqing University Chongqing400044 China School of Information and Optoelectronic Science and Engineering South China Normal University Guangzhou510006 China Guangdong Shunde Innovative Design Institute Guangdong Foshan528318 China

ISBN: (纸本)9781733419048

Paper-based microfluidic devices based on continuous-flow (μPAD) and electrowetting on dielectric (EWOD), have attracted increasing attention due to their low cost and excellent liquid handling capability. Here, we report a novel paper-based EWOD devices fabricated with the cellulose paper as substrate and paraffin wax as dielectric layer, which have been widely used in μPAD. Two methods are proposed to fabricate paraffin wax layer, including melting and spray-coating. Under DC electric field, the spray-coating-based devices show larger contact angle changes but with smaller hysteresis than the melting-based one. Our study opens up a new way for fabrication of the hybrid paper-based microfluidic device in the future. © 2022 microTAS 2022 - 26th International Conference on Miniaturized systems for Chemistry and Life sciences. All rights reserved.

关键词： Wetting

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Tunable quantum interference effects in Floquet two- and three-level systems

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Physical Review A 2022年第6期105卷 063724-063724页

作者： Yingying Han Minchen Qiao Xiao-Qing Luo Tie-Fu Li Wenxian Zhang Xiu-Hao Deng J. Q. You Dapeng Yu Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technology and College of Engineering Physics Shenzhen Technology University Shenzhen 518118 China Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology Wuhan University Wuhan Hubei 430072 China School of integrated circuits Tsinghua University Beijing 100084 China Hunan Province Key Laboratory for Ultra-Fast Micro/Nano Technology and Advanced Laser Manufacture School of Electrical Engineering University of South China Hengyang 421001 China School of Integrated Circuits and Frontier Science Center for Quantum Information Tsinghua University Beijing 100084 China Beijing Academy of Quantum Information Sciences Beijing 100193 China Guangdong Provincial Key Laboratory of Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Shenzhen 518055 China Interdisciplinary Center of Quantum Information State Key Laboratory of Modern Optical Instrumentation and Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou 310027 China

Quantum interference effects in the unmodulated quantum systems with light-matter interaction have been widely studied, such as electromagnetically induced transparency (EIT) and Autler-Townes splitting (ATS). However, the similar quantum interference effects in the Floquet systems (i.e., periodically modulated systems), which might cover rich new physics, were rarely studied. In this article, we investigate the quantum interference effects in the Floquet two- and three-level systems analytically and numerically. We show a coherent destruction tunneling effect in a lotuslike multipeak spectrum with a Floquet two-level system, where the intensity of the probe field is periodically modulated with a square-wave sequence. We demonstrate that the multipeak split into multiple transparency windows with tunable quantum interference if the Floquet system is asynchronously controlled via a third level. Based on phenomenological analysis with Akaike information criterion, we show that the symmetric central transparency window has a similar mechanism to the traditional ATS or EIT depending on the choice of parameters, additional with an extra degree of freedom to control the quantum interference provided by the modulation period. The other transparent windows are shown to be asymmetric, different from the traditional ATS and EIT windows. These nontrivial quantum interference effects open up a scope to explore the applications of the Floquet systems.

关键词： Light-matter interaction Quantum optics

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