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Characteristic Analysis and the Experiment of Passive Matrix Addressing for Grating Light Modulator

Characteristic Analysis and the Experiment of Passive Matrix...

中国微米纳米技术学会第十届学术年会暨第一届国际会议(1st International Conference of the Chinese Society of micro/nano technology)

作者： Jin Zhu Huang Shanglian Zhang Zhihai Wang Ning Zhang Jie Wei Wei The Key Laboratory of Fundamental Science of Micro/Nano Device & System Technology Chongqing400044China Optoelectronic Engineering Department Chongqing UniversityChongqing400044China

Grating Light Modulator (GLM) based on micro-Electro-Mechanical systems (MEMS) is applied in projection *** principle of GLM is introduced in the *** factors influencing the performance of passive matrix addressing for GLM are analyzed in *** the response frequency and the driving voltage are relative to the elastic coefficient of *** the elastic coefficient is larger,both response frequency and driving voltage are *** is indicated by analysis that in a m×n array when an all-selected pixel is actuated by a voltage V0,the voltages of half-selected pixel in row and column are respectively V0(m-1)/(m+n-1) and V0(n-1)/(m+n-1),and non-selected pixel's voltage is V0/(m+n-1).Finally,the operating voltage and the pull-in voltage are respectively 7.8V and 8.5V measured by the experiment,and these experimental values are very approximate to the theoretical *** GLM is actuated by a 7.8V square-wave voltage with lkHz frequency,the rising-edge time and the falling-edge time are respectively about 46.59μs and 44.77μ*** experiments indicate that the response frequency of GLM is about ***,the other experiment validates the correctness of crosstalk in a 16×16 GLM *** experiments provide a theoretical basis for improving the driver of GLM.

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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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Design of power management chip for piezoelectric energy harvesting

Design of power management chip for piezoelectric energy har...

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IEEE Conference on Electron devices and Solid-State Circuits

作者： Hua Yu Shibo Yang Wei Wang College of Optoelectronic Engineering Chongqing University Chongqing China Ministry of Education of China The Key Laboratory for Optoelectronic Technology & Systems Chongqing China National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing China

ISBN: (纸本)9781479923366

The paper proposes a complete energy harvesting solution integrated with a low-loss AC/DC rectifier and a high efficiency low dropout regulator (LDO) optimized for micro piezoelectric energy harvester. The AC/DC module converts AC into DC and then supplies power for the following LDO circuit module, through which the whole chip can obtain a stable 3.3V output voltage. A dynamic compensation mechanism is presented to improve the loop stability of LDO, which is easier to achieve high phase margin than traditional compensation strategy. The simulation results of LDO indicate that the typical dropout is 0.4mV with 1mA load current and 61mV with 150mA load current respectively, and the typical voltage line regulation error is 0.025%/V. In addition, the typical load regulation error was 0.00018%. The results demonstrate that the proposed chip meets the requirements of power supply for wireless sensor node (WSN).

关键词： Photonic band gap

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Direct observation of chaotic resonances in optical microcavities

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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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Design and simulation of corrugated diaphragm applied to the MEMS fiber optic pressure sensor

Design and simulation of corrugated diaphragm applied to the...

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IEEE International Conference on nano/micro Engineered and Molecular systems (NEMS)

作者： Yiming Gui Yangxi Zhang Guandong Liu Yilong Hao Chengchen Gao Institute of Microelectronics Peking University China National Key Laboratory of Science and Technology on Micro/Nano Fabrication China Innovation Center for Micro-Nano-electronics and Integrated System China Device and System Collaborative Innovation Center for Micro/Nano Fabrication Beijing China

ISBN: (纸本)9781509019489

In this paper, we propose a corrugated diaphragm applied to the fiber optic pressure sensor which needs a wide sensing range and a large deflection. The corrugated diaphragm can effectively improve the sensitivity of the sensor has been proved by ANSYS simulation. The stress concentration is weakened after the silicon is chamfered into corrugated diaphragm by isotropic etching process. The sensitivity of the corrugated diaphragm can reach to 0.44μ m/MPa which is two times larger than that of the same size planar diaphragm. The maximum sensing stress is up to 14MPa.

关键词： Stress Pressure sensors Sensitivity Optical fibers micromechanical devices Silicon

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The micro-structure and optical properties of Mn-doped ZnO thin film fabricated by sol-gel technique

The micro-structure and optical properties of Mn-doped ZnO t...

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IEEE International Conference on nano/micro Engineered and Molecular systems

作者： Wang, Xiu-Qin Ding, Jian-Ning Yuan, Ning-Yi Ding, Gu-Qiao Ni, JianLin Kan, Bao Center of Low-dimension Materials Micro/Nano Device and System Jiangsu Polytechnic University Changzhou 213164 China Center of Micro/Nano Science and Technology College of Mechanical Engineering Jiangsu University Zhenjiang 212013 China Key Laboratory of New Energy Source Changzhou 213164 China School of Mathematics and Physics Jiangsu Polytechnic University Changzhou 213164 China

ISBN: (纸本)9781424465439

We synthesized undoped and Mn-doped ZnO films on glass substrates using the sol-gel technique. The micro-structure, morphology and optical properties of ZnO films were studied by using X-ray diffraction, Atomic Force microscope and UV-visible transmission spectra. After annealed at a temperature lower than 550 °C by Rapid Thermal Processing (RTP), all the ZnO films are polycrystalline with a hexagonal wurtzite structure. For Mn-doped ZnO films, although no peak corresponding to manganese oxide is observed in XRD spectrums, the lattice constants of the films become larger and the optical band-gaps increase with the increase of annealing temperature, which is different from the result of un-doped ZnO films. These measurements indicate that Mn2+ has substituted for Zn2+ in the films even annealed at a temperature as low as 300 °C. ©2010 IEEE.

关键词： Optical properties

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Highly sekective and sensitice colorimetric liquid sensor array for pesticides detection

Highly sekective and sensitice colorimetric liquid sensor ar...

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The 6th International Conference on nanoscience & technology, China 2015

作者： Danqun Huo Liang Dong Hailong Jiang Huixiang Wu Huanbao Fa Mei Yang Yi Ma Shiying Zou Changjun Hou Key Laboratory of Biorheology Science and Technology Ministry of EducationCollege of BioengineeringChongqing University National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University College of Chemistry and Chemical Engineering Chongqing University Sichuan University of Science & Engineering

Pesticides were widely used to boost food production which poses a huge threat to human health and the environment. In the past several decades, numerous detection system, such as liquid chromatography, gas chromatography, capillary electrophoresis had been developed for the pesticides analyses. Although these methods offer high accuracy, better repeatability and high efficiency, they are costly, time-consuming and need professionals. Therefore, simple and convenient methods for detection of pesticides are still of significant need. The Au NPs and GSH-Au NPs were synthesized in this paper aiming to develop a new strategy for rapid determination ofpesticides. Herein, we designed a gold nanoparticles(Au NPs) and glutathione-gold nanoparticles(GSH-Au NPs) sensor array for the determination of 6 pesticides based on cross-response between sensor dots and analytes. Au NPs and GSH-Au NPs yield a different response to 6 pesticides with similar structures under different p H conditions. Based on this, a new liquid arrays with 8 sensors was constructed for identification of 6 pesticides. Color of sensor dots were recorded by scanner before and after the addition of pesticides and differential spectra were obtained subsequently and analyzed by principal component analysis(PCA), hierarchical clustering analysis(HCA) and linear discriminant analysis(LDA). The experimental results exhibit good recognition performance for 6 pesticides with 100% accuracy. Then the array is optimized, the results show that A and E still were the main contributors for identification of 6 pesticides. Liquid array was used in actual samples of the jialing river water and tap water and similar results were obtained. The result shows that the array has certain feasibility in the practical application.

关键词： gold nanoparticles,sensor array,pesticides detection

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Highly precise and efficient cell separation with parylene c micropore arrayed filtration membrane 19

Highly precise and efficient cell separation with parylene c...

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19th International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2015

作者： Liu, Y. Wang, W. Wu, W. Li, H. Sun, Y. Institute of Microelectronics Peking University Beijing100871 China National Key Laboratory of Science and Technology on Micro/Nano Fabrication 100871 China Innovation Center for Micro-Nano-Electronics and Integrated System Beijing100871 China No. 1 Hospital of Peking University Beijing100871 China School of Biological Science and Medical Engineering Beihang University Beijing100191 China

ISBN: (纸本)9780979806483

Very large scale micropore array has been recognized as a promising tool for separation and enrichment of rare targeted cells from a large sample volume. A high cell separation performance is strongly dependent on a small interspace between the separation pores (smaller than radius of the cell to avoid non-specific adhesion). Parylene C is a widely-used polymer in the MEMS for flexible thin film device preparation and some Parylene C based filtration devices have been applied for cell separation. This paper demonstrated a highly precise and efficient cell separation at a very high throughput driven only by the gravity with a very large scale (640000 micropores in 11 mm × 11 mm area) Parylene C micropore arrayed filtration membrane of ultra-high porosity. © 15CBMS-0001.

关键词： Cells

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nanoscale phase management of the 2D/3D heterostructure toward efficient perovskite solar cells

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science Bulletin 2024年第18期69卷 2853-2861页

作者： Hao Gu Annan Zhu Junmin Xia Wang Li Jiahao Zheng Tao Yang Shengwen Li Nan Zhang Shiliang Mei Yongqing Cai Shi Chen Chao Liang Guichuan Xing Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyXi’an Jiaotong UniversityXi’an 710049China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhen 518055China Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China

The stabilization of the formamidinium lead iodide(FAPbI_(3))structure is pivotal for the development of efficient photovoltaic *** two-dimensional(2D)layers to passivate the threedimensional(3D)perovskite is essential for maintaining the a-phase of FAPbI_(3) and enhancing the power conversion efficiency(PCE)of perovskite solar cells(PSCs).However,the role of bulky ligands in the phase management of 2D perovskites,crucial for the stabilization of FAPbI_(3),has not yet been *** this study,we synthesized nanoscale 2D perovskite capping crusts with=1 and 2 Ruddlesden-Popper(RP)perovskite layers,respectively,which form a type-Ⅱ 2D/3D *** heterostructure stabilizes the a-phase of FAPbI_(3),and facilitates ultrafast carrier extraction from the 3D perovskite network to transport contact *** introduced tri-fluorinated ligands to mitigate defects caused by the halide vacancies and uncoordinated Pb^(2+)ions,thereby reducing nonradiative carrier recombination and extending carrier *** films produced were incorporated into PSCs that not only achieved a PCE of 25.39%but also maintained 95%of their initial efficiency after 2000 h of continuous light exposure without *** findings underscore the effectiveness of a phase-pure 2D/3D heterostructure-terminated film in inhibiting phase transitions passivating the iodide anion vacancy defects,facilitating the charge carrier extraction,and boosting the performance of optoelectronic devices.

关键词： Phase-pure 2D perovskite 2D/3D heterostructure Type-II energy alignment Carrier dynamic FAPbI_(3)

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Graphene-based dual-function acoustic transducers for machine learning-assisted human-robot interfaces

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InfoMat 2023年第2期5卷 66-79页

作者： Hao Sun Xin Gao Liang-Yan Guo Lu-Qi Tao Zi Hao Guo Yangshi Shao Tianrui Cui Yi Yang Xiong Pu Tian-Ling Ren Institute of Microelectronics and Beijing National Research Center for Information Science and Technology(BNRist) Tsinghua UniversityBeijingPeople's Republic of China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijingPeople's Republic of China State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingPeople's Republic of China School of Computer Science&Technology Beijing Institute of TechnologyBeijingPeople's Republic of China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijingPeople's Republic of China

Human–robot interface(HRI)electronics are critical for realizing robotic ***,we report graphene-based dual-function acoustic transducers for machine learning-assisted human–robot interfaces(GHRI).The GHRI functions both an artificial ear through the triboelectric acoustic sensing mechanism and an artificial mouth through the thermoacoustic sound emission *** success of the integrated device is also attributed to the multifunctional laser-induced graphene,as either triboelectric materials,electrodes,or thermoacoustic *** systematically optimizing the structure parameters,the GHRI achieves high sensitivity(4500 mV Pa^(–1))and operating durability(1000000 cycles and 60 days),capable of recognizing speech identities,emotions,content,and other information in the human *** the assistance of machine learning,30 speech categories are trained by a convolutional neural network,and the accuracy reaches 99.66%and 96.63%in training datasets and test ***,GHRI is used for artificial intelligence communication based on recognized speech *** work shows broad prospects for the development of robotic intelligence.

关键词： human-robot interface laser-induced graphene machine learning thermoacoustic triboelectric nanogenerator

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