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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Tadayoshi Aoyama Liang Li Mingjun Jiang Takeshi Takaki Idaku Ishii Hua Yang Chikako Urnemoto Hiroshi Matsuda Makoto Chikaraishi Akimasa Fujiwara Department of of Micro-Nano Mechanical Science and Engineering Nagoya University Nagoya Japan Department of System Cybernetics Hiroshima University Higashi-Hiroshima Hiroshima Japan State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan Hubei China Keisoku Research Consultant Co. Hiroshima Japan Department of Structural Engineering Nagasaki University Nagasaki Japan Graduate School for International Development and Cooperation Hiroshima University Higashi-Hiroshima Hiroshima Japan

Previously, we proposed a multithread active vision system that can virtually realize multiple pan-tilt tracking cameras by rapidly switching the viewpoints for the vibration measurement. However, the measurement rate of observation points is low and the time density of measurement data is not always sufficient. In this study, we propose a multiple vibration distribution synthesis method for vibration analysis that increases the sampling rate of each observation point in the multithread active vision system. The proposed method is verified through a high-order modal analysis for a 4-m long truss-structure bridge model, which was impossible to perform in the previous method.

关键词： Vibrations Bridges Shape Cameras Vibration measurement Displacement measurement Machine vision

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Observation of anomalous π modes in photonic Floquet engineering

arXiv

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arXiv 2018年

作者： Cheng, Qingqing Pan, Yiming Wang, Huaiqiang Zhang, Chaoshi Yu, Dong Gover, Avi Zhang, Haijun Li, Tao Zhou, Lei Zhu, Shining Shanghai Key Lab of Modern Optical System and Engineering Research Center of Optical Instrument and System Ministry of Education University of Shanghai for Science and Technology Shanghai200093 China Department of Electrical Engineering Physical Electronics Tel Aviv University Ramat Aviv69978 Israel National Laboratory of Solid State Microstructures School of Physics Nanjing University Nanjing210093 China National Laboratory of Solid State Microstructures School of Physics and Collaborative Innovation Centre of Advanced Microstructure Nanjing University Nanjing210093 China State Key Laboratory of Surface Physics Key Laboratory of Micro and Nano Photonic Structures Ministry of Education Physics Department Fudan University Shanghai200433 China National Laboratory of Solid State Microstructures School of Physics College of Engineering and Applied Sciences Nanjing University Nanjing210093 China

Recent progresses on Floquet topological phases have shed new light on time-dependant quantum systems, among which one-dimensional (1D) Floquet systems have been under extensive theoretical research. However, an unambiguous experimental observation of these 1D Floquet topological phases has still been lacking. Here, by periodically bending ultrathin metallic arrays of coupled corrugated waveguides, a photonic Floquet simulator was well designed and successfully fabricated to simulate the periodically driven Su-Schrieffer-Heeger model. Intriguingly, under moderate driven frequencies, we first experimentally observed and theoretically verified the Floquet topological π mode propagating along the array's boundary. The different evolutionary behaviors between static and non-static topological end modes have also been clearly demonstrated. Our experiment also reveals the universal high-frequency behavior in perically driven systems. We emphasize that, our system can serve as a powerful and versatile testing ground for various phenomena related to time-dependant 1D quantum phases, such as Thouless charge pumping and manybody localization. Copyright © 2018, The Authors. All rights reserved.

关键词： Quantum optics

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Silicon cavity resonator based on locally resonant phononic crystal 15

Silicon cavity resonator based on locally resonant phononic ...

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15th IEEE Sensors Conference, SENSORS 2016

作者： Jiang, Wanli Feng, Duan Xu, Dehui Xiong, Bin Wang, Yuelin Science and Technology on Micro-system Laboratory SIMIT CAS Shanghai China University of Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781479982875

In this paper, a silicon cavity-mode resonator based on locally resonant phononic crystal (PnC) is experimentally studied. The PnC resonator is realized by creating line defects on a two-dimension (2-D) silicon PnC. The silicon resonator was fabricated by micro machining process, and tested by a combination of the fluid coupling method and Laser Doppler Vibrometer. Two resonant frequencies (7.93MHz and 8.03MHz) were observed in the PnC resonator. The experimental results agree well with the simulated band structures of the perfect PnC and PnC resonator, that the resonant frequencies of the designed PnC resonator are in the range of the phononic bandgaps (PnBGs). © 2016 IEEE.

关键词： Natural frequencies

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Stress control of silicon nitride films deposited by plasma enhanced chemical vapor deposition

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Optoelectronics Letters 2016年第4期12卷 285-289页

作者：李东玲冯小飞温志渝尚正国佘引 National Key Laboratory of Fundamental Science of Novel Micro/Nano Device and System Technology Chongqing University Chongqing 400030 China Key Laboratory of Optoelectronic Technology and System of the Education Ministry of China Chongqing University Chongqing 400030 China No.24 Reaearch Institute of China Electronics Technology Group Corporation Chongqing 400060 China

Stress controllable silicon nitride(Si Nx) films deposited by plasma enhanced chemical vapor deposition(PECVD) are reported. Low stress Si Nx films were deposited in both high frequency(HF) mode and dual frequency(HF/LF) mode. By optimizing process parameters, stress free(-0.27 MPa) Si Nx films were obtained with the deposition rate of 45.5 nm/min and the refractive index of 2.06. Furthermore, at HF/LF mode, the stress is significantly influenced by LF ratio and LF power, and can be controlled to be 10 MPa with the LF ratio of 17% and LF power of 150 W. However, LF power has a little effect on the deposition rate due to the interaction between HF power and LF power. The deposited Si Nx films have good mechanical and optical properties, low deposition temperature and controllable stress, and can be widely used in integrated circuit(IC), micro-electro-mechanical systems(MEMS) and bio-MEMS.

关键词： Deposition Deposition rates Integrated circuits MEMS Nitrides Optical properties Plasma CVD Refractive index Silicon nitride Stresses Vapor deposition

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Ultrasensitive Bioelectronic Nose Based On CMOS-Compatible Silicon Nanowire Array

Ultrasensitive Bioelectronic Nose Based On CMOS-Compatible S...

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IEEE Sensors Conference

作者： Anran Gao Yi Wang Xun Yang Yuelin Wang Tie Li Science and Technology on Micro-system Laboratory Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Beijing C&N International Sci-tech Co. Ltd. Beijing China

ISBN: (纸本)9781509010134

Here, we demonstrate an ultrasensitive olfactory system, namely, a bioelectronic nose (B-nose), based on CMOS-compatible silicon nanowires (SiNWs) conjugated with an odorant-binding protein (OBP). The SiNWs were low-cost and top-down fabricated with a conventional microfabrication process by using a novel controllable size-reduction process. The OBP-SiNW devices detect vapor analytes under ambient air conditions, with reversible and reproducible sensor responses. The SiNW based B-noses have shown ultrahigh sensitivity for recognizing target odorant as low as 10 ppb and high specificity for discriminating odorant with similar structure.

关键词： silicon nanowire bioelectronic nose ultrasensitive odorant-binding protein(OBP)

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Flexible and transparent triboelectric nanogenerator based on high performance well-ordered porous PDMS dielectric film

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Nano Research 2016年第12期9卷 3714-3724页

作者： Xianming He Xiaojing Mu Quan Wen Zhiyu Wen Jun Yang Chenguo Hu Haofei Shi Department of Applied Physics Chongqing University Chongqing 400044 China Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University Chongqing 400044 China Microsystem Research Center Chongqing University Chongqing 400044 China Key Laboratory of Multi-Scale Manufacturing Technology Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China

A flexible and transparent triboelectric nanogenerator （FT-TENG） has great potential for application in self-powered biosensor systems, electronic skin and wearable electronic devices. However, improving the output performance with little damage to its optical properties is challenging. Herein, we have developed an FT-TENG that has a well-ordered nest-like porous polydimethylsiloxane （NP-PDMS） film and graphene transparent electrodes. The NP-PDMS film with ordered pores is fabricated by hydrochloric acid etching of 500 nm sized ZnO spheres made of aggregated nanoparticles, having a light transmittance of 81.8% and a water contact angle of 118.62°. The FT-TENG based on the NP-PDMS film with a porosity of 12%, gives a maximum output of 271 V and 7.8 μA, which are respectively, 3.7 and 2.1-fold of those of a TENG with a flat PDMS film. The peak output power reaches 0.39 mW with a load resistance of 9.01 MΩ. The dielectric constant and effective thickness of the NP-PDMS film and the capacitance and charge transfer of the FT-TENG are systematically investigated. This work provides a novel and effective method to enhance the performance of FT-TENGs with little damage to their optical properties.

关键词： porouspolydimethylsiloxane（PDMS） surface charge density nanogenerator flexibility transparent electrode

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Solar Driven Spintronics: Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications (Adv. Sci. 24/2019)

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Advanced science 2019年第24期6卷 1970147-1970147页

作者： Yifan Zhao Shishun Zhao Lei Wang Ziyao Zhou Junxue Liu Tai Min Bin Peng Zhongqiang Hu Shengye Jin Ming Liu Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric Research School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China International Joint Laboratory for Micro/Nano Manufacture and Measurement Technology Xi'an Jiaotong University Xi'an 710049 China Center for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Rd. Dalian 116023 China

In article number https://***/10.1002/advs.201901994 , Ziyao Zhou, Ming Liu, and co‐workers propose a prototype photovoltaic spintronic device with an optical‐magneto‐electric tri‐coupled photovoltaic/magnetic thin film heterojunction, where magnetism can be manipulated directly by sunlight. Both in situ experiments and the first principle calculation results reveal that the photogenerated electrons doping in the cobalt film alter the band filling of this ferromagnetic film and manipulate the magnetization and magnetic anisotropy effectively.

关键词： ferromagnetic resonance low power magnetoelectric coupling organics solar cells

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High-Performance Photo-Modulated Thin-Film Transistor Based on Quantum dots/Reduced Graphene Oxide Fragment-Decorated ZnO Nanowires

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Nano-micro Letters 2016年第3期8卷 247-253页

作者： Zhi Tao Yi-an Huang Xiang Liu Jing Chen Wei Lei Xiaofeng Wang Lingfeng Pan Jiangyong Pan Qianqian Huang Zichen Zhang School of Electronic Science and Engineering Southeast University State Key Laboratory of Precision Measurement Technology and Instruments Collaborative Innovation Center for Micro/Nano Fabrication Device and System Department of Precision Instrument Tsinghua University School of Information and Communication Engineering Beijing University of Posts and Telecommunications Institute of Semiconductors Chinese Academy of Science

In this paper, a photo-modulated transistor based on the thin-film transistor structure was fabricated on the flexible substrate by spin-coating and magnetron sputtering. A novel hybrid material that composed of Cd Se quantum dots and reduced graphene oxide(RGO) fragment-decorated ZnO nanowires was synthesized to overcome the narrow optical sensitive waveband and enhance the photo-responsivity. Due to the enrichment of the interface and heterostructure by RGO fragments being utilized, the photo-responsivity of the transistor was improved to 2000 AW^(-1) and the photo-sensitive wavelength was extended from ultraviolet to visible. In addition, a positive back-gate voltage was employed to reduce the Schottky barrier width of RGO fragments and ZnO nanowires. As a result, the amount of carriers was increased by 10 folds via the modulation of back-gate voltage. With these inherent properties, such as integrated circuit capability and wide optical sensitive waveband, the transistor will manifest great potential in the future applications in photodetectors.

关键词： Thin-film transistor Quantum dots Reduced graphene oxide ZnO nanowires

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Phase-Change Memory: Increasing the Atomic Packing Efficiency of Phase-Change Memory Glass to Reduce the Density Change upon Crystallization (Adv. Electron. Mater. 9/2018)

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Advanced Electronic Materials 2018年第9期4卷

作者： Qianqian Wu Meng Xu Kailang Xu Hang Qian Hao Tong Xiaomin Cheng Liangcai Wu Ming Xu Xiangshui Miao Wuhan National Research Center for Optoelectronics School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Micro-System and Information Technology Chinese Academy of Sciences Shanghai 200050 China

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Narrow photonic-plasmonic resonances in petal-like capped-nanopillar resonators for real-time, ultrasensitive colorimetric sensing 20

Narrow photonic-plasmonic resonances in petal-like capped-na...

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20th International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2016

作者： Fan, Jiaorong Wu, Wengang Zhu, Jia Yun, Huang National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of Microelectronics Peking University Beijing100871 China Innovation Center for MicroNanoelectronics and Integrated System Beijing China

ISBN: (纸本)9780979806490

A new type of colorimetric sensing device composed of metallic nanopetal-capped-nanopillar array metasurface is reported. The device exhibits narrowband and harmonic reflection feature, and thus has excellent ability to produce vivid and bright colors. This is due to the effect of surface-plasmon (SP) coupling in the array of three-dimensional plasmonic petal-capped-pillar nanoresonators. We employ the device as an ultrasensitive colorimetric plasmon-resonance sensor to detect different refractive-index solutions with much striking color differences. The metasurface-based sensor can visually detect the surrounding medium in real-time with refractive index resolution of 2x10-3 units.

关键词： Refractive index

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