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2016 13th IEEE International Conference on Solid-State and Integrated Circuit technology (ICSICT)

作者： GAO Yang CAI Xun HE Xuefeng Institute of Electronic Engineering China Academy of Engineering Physics State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsCAS School of Information Engineering Southwest University of Science and Technology National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University

In this paper, we present an easy to use 4-step design method for film bulk acoustic resonator(FBAR) filters, and demonstrated by a FDD-LTE band 7 FBAR Rx filter design case. According to the center frequency and bandwidth of FBAR filter, we determine thickness of each film in the FBAR film stack at the step 1. The step 2 gets the filter's circuit architecture. In the step 3, we obtain the active area of each FBAR unit. To get this, we made the resonance area value of series FBAR units and the ratio of resonance area value of parallel FBAR units and series FBAR units into two types of optimization parameters reasonably. Taking the given insertion loss and out-of-band rejection of filter as the optimization objective, we obtained the optimized values by the algorithm based on gradient in ADS software. The last step 4 aiming at minimizing filter passband ripple. In the design case, this aim is fulfilled by a novel FBARs' electrode layer thickness adjusting method, and intentionally slightly mismatches the series resonant frequency of the series FBAR units with the parallel resonant frequency of the parallel FBAR units. As in the design case results, a only 300 nm thick SiO 2 support layer need to survive the backside via-hole etching micro-fabrication process, so we proposed a buried oxide layer(BOX) buffered 2-step via-hole etching scheme, which taking advantage of the etching self-stop characteristic of BOX. Design case results show that insertion loss of the Rx filter is 0.6 d B, rejection in Tx frequency band is 40.4 d B and passband ripple is 0.4 d B. Thus we validate the feasibility of the design method.

关键词： Four-step FBAR Filters Design Method and SOI BOX Buffered Via-hole Etching Scheme filter SOI

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Safety Analysis on a Novel Solid State Thermal Mechanical Discriminator

Safety Analysis on a Novel Solid State Thermal Mechanical Di...

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2016 13th IEEE International Conference on Solid-State and Integrated Circuit technology (ICSICT)

作者： JIA Le GAO Yang WANG Yu-hang LV Jun-guang School of Information Engineering Southwest University of Science and Technology Institute of Electronic Engineering China Academy of Engineering Physics National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics CAS

In order to strengthen safety in abnormal environment, we analyze safety on the Solid State Thermal Mechanical Discriminator(SSTMD). Firstly, we calculate the number of Thermo-Mechanical Switches(TMSs) by means of a method with probability theory when the probability of unintentional unlock on the SSTMD is less than 10-6. Then the probability of safety failure on the SSTMD is estimated by analyzing the relationship between probability of a TMS from OFF state to ON state and temperature in abnormal high temperature environment. We put forward two design criteria for the layout of the SSTMD by analyzing working principle of the Trap TMSs played a role as intrinsic thermal weaklink to reduce the probability of safety failure on SSTMD in abnormal high temperature environment. There are two design rules to enhance the thermal weaklink effect. Firstly, TMSs can be classed as two groups: the Route TMSs and the Trap TMSs, and those two class TMSs should be evenly layout as far as possible, to obtain equal probability of contacting hotspot for the Trap TMSs to work in abnormal high-temperature environment. Secondly, we choose lower melting point of materials on the Trap TMSs to make them preemptively switch to the ON state before the Route TMSs. Additionally, we find the intrinsic shock weaklink effect in the Route TMSs, and enhanced this beneficial effect by etching an annular groove on the back of insulating film membrane of the Route TMSs, to ensure the safety of the SSTMD in abnormal shock/vibration environments. By revealing and taking advantage of those two weaklink effects, we get a novel SSTMD architecture with integrated thermal and shock weaklink functions, which would be quite suitable for the high consequence system applications.

关键词： TMS Safety Analysis on a Novel Solid State Thermal Mechanical Discriminator

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Research on dynamic performance of star tracker

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Instrumentation 2015年第1期2卷 17-26页

作者： SUN Ting XING Fei YOU Zheng Department of Precision Instrument Tsinghua University State Key Laboratory of Precision Measurement Technology and Instruments Tsinghua University Collaborative Innovation Center for Micro / Nano Fabrication Device and SystemTsinghua University

This manuscript briefly summarizes the development trends and recent research focus of the star *** the relevant technologies about dynamic performance of the star tracker are analyzed and *** can provide reference fo... 详细信息

关键词： Star tracker dynamic star image processing restoration of star image deep coupling

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Frontispiz: Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie 2025年第17期137卷

作者： Dr. Yi Fan Dr. Yigang Shen Wenli Zhang Guochao Zeng Tete Liu Yilan Wang Dr. Shuli Wang Prof. Jing Zheng Prof. Xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Gating Inspired Future Technology Co. Ltd. Xiamen 361005 China Machinery and Smart Structure Research Center for Micro-Nano Device and System College of Engineering Zhejiang Normal University Jinhua 321004 China Fujian Engineering Research Center for Solid-State Lighting Department of Electronic Science School of Electronic Science and Engineering Xiamen University Xiamen 361005 China Institute of Artificial Intelligence Xiamen University Xiamen 361005 China Institute of Electrochemical Science and Engineering Xiamen University Xiamen 361005 China Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials Research College of Physical Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen 361005 China

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Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie 2025年

The critical challenge in advancing liquid metal circuits (LMCs) lies in achieving interfacial compatibility with diverse substrates while dynamically balancing fabrication efficiency and quality to ensure robust conductive stability. Here we introduce an electrochemical redox synergistic liquid metal (E- rs LM) that enables the controllable generation of diverse intermetallic bond transition layers (Cu, Au, or Fe-based) between liquid metal and unrestricted substrate surfaces, applicable in pH-universal electrolytes. It involves enhanced locomotion of the liquid metal, driven by synergistic electrochemical energy transduction from cyclic changes in gallium redox states. Characterized by expansion-contraction-expansion, it enables unique self-propelled bouncing, tuning spreading speed (up to ~26.8 mm/s) and elongation rate (up to 1192 %) with a volume of only 80 μL. Additionally, we demonstrate the adaptability of E- rs LM fabrication across 30 different substrates, highlighting its versatility. The patterning displays the superimposed efficiency and self-indicated quality, leading to superior conductivity (with time-cost savings of 30.7 % and 13.4 % in heating-cooling cycles, and a nearly 90 % reduction in output resistance). The practical viability of these circuits is further showcased by the assembly of integrated circuits, marking a significant step in expanding LMCs applications beyond laboratory-scale prototypes.

关键词： Electrochemistry Redox reaction Liquid metal Patterning Liquid metal circuits

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Frontispiece: Electrochemical Redox Synergism-Enhanced Liquid Metal Locomotion for Unrestricted Circuit Substrate Patterning

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Angewandte Chemie International Edition 2025年第17期64卷

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Design of a graphene capacitive pressure sensor for ultra-low pressure detection

Design of a graphene capacitive pressure sensor for ultra-lo...

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

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

ISBN: (纸本)9781509019489

This paper reports the design and theoretical calculation of a capacitive ultra-low pressure sensor, which is based on circular suspend graphene diaphragm array. The atom scale thickness and high mechanical strength of suspend graphene diaphragm both contribute to ultra-low pressure measure range. As the size of single suspend graphene diaphragm is limited by fabrication process, a parallel connected sensor array is designed to achieve detectable capacitance change and redundancy. In calculation, a sensor array with 40,000 5μm radius suspend graphene diaphragm cells in 4mm×4mm size can provide 288fF/Pa sensitivity to pressure load.

关键词： Graphene Capacitance Pressure sensors Sensor arrays Films Electrodes Sensitivity

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Dynamic mesophase transition induces anomalous suppressed and anisotropic phonon thermal transport

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npj Computational Materials 2024年第1期10卷 239-248页

作者： Linfeng Yu Kexin Dong Qi Yang Yi Zhang Zheyong Fan Xiong Zheng Huimin Wang Zhenzhen Qin Guangzhao Qin State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082People’s Republic of China College of Physical Science and Technology Bohai UniversityJinzhou121013People’s Republic of China Hunan Key Laboratory for Micro-Nano Energy Materials&Device and School of Physics and Optoelectronics Xiangtan UniversityXiangtan411105 HunanChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhou450001China Research Institute of Hunan University in Chongqing Chongqing401133China Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou511300 Guangdong ProvinceChina

The physical/chemical properties undergo significant transformations in the different states arising from phase ***,due to the lack of a dynamic perspective,transitional mesophases are largely underexamined,constrained by the high resource burden of first ***,usingmolecular dynamics(MD)simulations empowered by the machine-learning potential,we proffer an innovative paradigm for phase transition:regulating the thermal transport properties via the transitional mesophase triggered by a uniaxial force *** investigate the mechanical,electrical,and thermal transport properties of the two-dimensional carbon allotrope of Janus-graphene with strain-engineered phase ***,we found that the transitional mesophase significantly suppresses the thermal conductivity and induces strong anisotropy near the phase transition *** machine-learning-driven MD simulations,we achieved highprecision atomic-level simulations of *** results show that thermal vibrationinduced intermediate amorphous or interfacial phases induce strong and anisotropic interfacial thermal *** investigation not only endows uswith a novel perspective onmesophases during phase transitions but also enhances our holistic comprehension of the evolution of material properties.

关键词： thermal transition transport

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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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Facile synthesis of ironenickelecobalt ternary oxide(FNCO)mesoporous nanowires as electrode material for supercapacitor application

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Journal of Materiomics 2022年第1期8卷 221-228页

作者： Muhammad Usman Muhammad Tayyab Ahsan Sofia Javed Zeeshan Ali Yiqiang Zhan Irfan Ahmed Sajid Butt Mohammad Islam Asif Mahmood M.Aftab Akram School of Chemical and Materials Engineering National University of Sciences and Technology(NUST)Sector H-12Islamabad44000Pakistan Department of Materials Science and Engineering College of EngineeringPeking University100871BeijingChina State Key Laboratory of ASIC and System Center of Micro-Nano SystemSISTFudan UniversityShanghai200433China Department of Materials Science and Engineering Institute of Space TechnologyIslamabad44000Pakistan New Mexcico Institute of Mining&Technology SocorroNM 87801USA School of Chemical and Biomolecular Engineering The University of Sydney2006SydneyAustralia

Transition Metal Oxides have drawn significant attention due to their reversible chemical redox reaction and long-life *** agglomeration and shrinkage/expansion of transition metal oxides in the nanosize regime have a noticeable effect on their electrochemical *** in this work,mesoporous nanowires(NWs)with a typical composition of iron-nickel-cobalt ternary oxide(FNCO)are synthesized using a simple,facile and cost-effective hydrothermal process followed by furnace *** NWs are then extensively investigated as an electrode material for supercapacitor *** compare the electrochemical properties,nanowires of nickel-cobalt oxide(NCO),iron-cobalt oxide(FCO)and cobalt oxide(CO)were also produced by following the same *** FNCO NWs are found to overcome the shortcomings in the electrochemical energy storage devices by exhibiting higher values of specific capacitance(2197 Fg^(-1))and energy density(109 Whkg^(-1))at 1 Ag^(-1) current ***,the FNCO NWs also showed a cyclic charge/discharge stability of 96%even up to 20,000 ***,a FNCO//graphene asymmetric device,fabricated with FNCO NWs and graphene as positive and negative electrodes,respectively,which exhibit high energy density(47 Whkg^(-1)),power density(375 Wkg^(-1))and excellent capacitance retention(86%)after 15,000 cycles.

关键词： Electrochemistry Hydrothermal synthesis nanowires Supercapacitor Transition metal oxides

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