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Automatic Monitoring Electronic Tongue with MEAs for Environmental Analysis

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稀有金属材料与工程 2006年第S3期 381-384页

作者： Shaofang Zou~(1,2) Hong Men~1 Yi Li~1 Yinping Wang~1 Ping Wang~(1,2) (1.Biosensor National Special laboratory,key laboratory of Biomedical Engineering of Education Ministry,Department of Biomedical Engineering,Zhejiang University,Hangzhou 310027,china) (2.state key laboratory of transducer technology,chinese academy of sciences,shanghai 200050,china)

An automatic monitoring electronic tongue based on differential pulse stripping voltammetry (DPSV) was developed for heavy metals *** detections of trace Zn(Ⅱ),Cd(Ⅱ),Pb(Ⅱ),Cu(Ⅱ),Fe(Ⅲ) and Cr(Ⅲ) in water samples were performed with three electrochemical *** sensor chip combined a silicon-based Hg-coated Au microelectrode array (MEA) as the working electrode on one side with an Ag/AgCl reference electrode and a Pt counter electrode on the other *** a computer controlled multipotentiostat,pumps and valves,the electronic tongue realized in-situ real-time detection of the six metals mentioned above at parts-per-billion level without manual operation.

关键词： electronic tongue heavy metals automatic monitoring microelectrode array multipotentiostat

Neurochip Based on Light-addressable Potentiometric Sensor

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稀有金属材料与工程 2006年第S3期 413-416页

作者： Qingjun Liu~(1,2) Hua Cai~1 Ying Xu~(1,2) Lifeng Qin~1 Lijiang Wang~1 Ping Wang~(1,2) (1.Biosensor National Special laboratory,key laboratory of Biomedical Engineering of Education Ministry,Department of Biomedical Engineering,Zhejiang University,Hangzhou 310027,china) (2 state key laboratory of transducer technology,chinese academy of sciences,shanghai 200050,china)

A novel neurochip based on light addressable potentiometric sensor （LAPS） is *** its light addressable *** problems of the limitations of restricted discrete active sites of current neurochips,such as microelectrode array and field effect transistor array can be settled *** on the theoretical analysis of the interface between cells and LAPS,spontaneously discharges of hippocampal neurons induced by Mg~ 2+)-free media treatment were recorded by *** results demonstrate that this kind of neurochip has potential to monitor electrophysiology of cultured cells in a non-invasive way.

关键词： neurochip cell-based biosensor hippocampal neurons light-addressable potentiometric sensor

A novel multi-functional cell-based microphysiometer

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Progress in Natural Science:Materials International 2006年第8期16卷 808-816页

作者： XU Ying, XU Gaixia, LIU Qingjun, CAI Hua, LI Yan, LI Rong and WANG Ping (Biosensor National Special laboratory, key laboratory of Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, china state key laboratory of transducer technology, chinese academy of sciences, shanghai 200050, china) [a]Biosensor National Special laboratory Key Laboratory of Biomedical Engineering of Education Ministry Department of Biomedical Engineering Zhejiang University Hangzhou China [b]state key laboratory of transducer technology Chinese Academy of Sciences Shanghai China

This paper presents a novel multi-functional microphysiometer for simultaneous measurements of several extracellular ion concentrations and action potential measurement in living cells based on MLAPS (multi-light addressable potentiometric sensor). In the microphysiometer, sorts of sensitive membranes are illuminated in parallel with n light sources at working frequencies, and the response amplitudes of each frequency component can be measured on-line by parallel processing algorithm. In the experiments, the relations of the extracellular environmental H+, Na+, K+, Ca2+ under the effects of western medicines (dilantin, phenobarbital sodium) and chinese drugs (scutellaria, medlar, hemlock parsley) were analyzed, and the effects of several drugs were evaluated. Moreover, the action potential signals of different cell types (cardiac myocytes and neurons) could be measured and analyzed by LAPS. By detecting these parameters, the system can monitor the real-time process of the cell metabolism and action potential, observe the functional responses of different kinds of membrane-bound receptors, and evaluate the activities of drugs.

关键词： multi-functional microphysiometer cell-based biosensor cellular ion concentration measurement cellular action potential.

Research progress in terahertz quantum cascade lasers

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Science china(Information sciences) 2012年第1期55卷 16-26页

作者： CAO JunCheng key laboratory of Terahertz Solid-state technology,shanghai Institute of Microsystem and Information technology,chinese academy of sciences,shanghai 200050,china 1. key laboratory of Terahertz Solid-state technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

The terahertz(THz)quantum cascade laser(QCL)is a coherent THz source based on intersubband transitions of unipolar *** semiconductor lasers,THz QCLs are solid-state,electrically pumped,tunable,and can be easily *** paper reviews the state of the art for the design,operation temperature,and output power of THz *** applications in THz communication and imaging are also discussed.

关键词： terahertz quantum cascade laser communication imaging

<100> Textured Diamond Film on Silicon Grown by Hot Filament Chemical Vapor Deposition

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Journal of Materials Science & technology 1995年第6期11卷 426-428页

作者： Xuanxiong ZHANG Tiansheng SHI and Xikang ZHANG (state key laboratory of Functional Materials for Informatics, shanghai Institute of Metallurgy,chinese academy of sciences, shanghai, 200050, china) shanghai Inst of Metallurgy Chinese Acad of Sciences Shanghai China

The textured growth of diamond film on HF eroded silicon wafer has been studied by HFCVD. The evolution of grain size and sudece morphology vs deposition time is presented and the textured thick diamond film (80μm)... 详细信息

关键词： Textured Diamond Film on Silicon Grown by Hot Filament Chemical Vapor Deposition OO

Structural and microstructural transformations in Bi_2Sr_2Ca_(1-x)Y_xCu_2O_(8+y) system

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chinese Science Bulletin 1997年第3期42卷 192-196页

作者： SONG Chengyu, WEN Shulin and CHE Guangcan1. shanghai Institute of Ceramics, chinese academy of sciences, shanghai 200050, china 2. state key laboratory of Supercon-ductivity, Institute of Physics, chinese academy of sciences, Beijing 100080, china shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

SINCE the discovery of high-Tc superconductors, experiments have revealed that the phase diagrams of La2-xSrxCuO4 and YBa2Cu3O6+x resemble each other. The antiferromagnetic phase is commonly situated in the vicinity o... 详细信息

关键词： Bi2Sr2Ca1-xYxCu2Oy substitution structural transformation.

Channel characterization at 120 GHz for future indoor communication systems

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chinese Physics B 2013年第5期22卷 650-656页

作者：陈镇曹俊诚 key laboratory of Terahertz Solid-state technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences

We present a simulation on the spatial and temporal characteristics of the indoor propagation channel at 120 GHz. The simulation, applied to a dynamic scenario with randomly placed objects and moving people in a room, is based on a three-dimensional ray-tracing method. Propagation and reflection mechanisms of electromagnetic waves are discussed in the channel model. The received power in a 0.95-m-height plane is obtained. Comparison between walls and ceiling covered with dielectric mirrors and those with three common wall and ceiling materials are presented. The result shows that the holistic received power level with dielectric mirrors is about 10 dB higher than with other materials.

关键词： sub-terahertz communication channel models ray tracing electromagnetic propagation

Effects of deposition parameters on the properties of VO2 thin films

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Progress in Natural Science:Materials International 2006年第11期16卷 1193-1197页

作者： WANG Lixia, LI Jianping*, GAO Xiaoguang and HE Xiuli (state key laboratory of transducer technology, Institute of Electronics, chinese academy of sciences, Beijing 100080, china) [a]state key laboratory of transducer technology Institute of Electronics Chinese Academy of Sciences Beijing China

The vanadium oxide thin films are deposited for microbolometers by radio frequency reactive sputtering method at room temperature. The effects of the oxygen partial pressure on the deposition rate, electrical properties and compositions of the films are discussed. The as-deposited VOx thin films with x value of nearly 2 are deposited by adjusting the oxygen partial pressure. After oxidation annealing of these films in air, the VO2 films with high temperature coefficients of resistivity （about -4%/℃） and low resistivity can be obtained. The square resistances of the films are in the range of 100 kΩ/squ—300 kΩ/squ. All films are deposited at room temperature and annealed at 400℃, in which the compatibility between VOx deposition process and MEMS （micro electromechanical systems） is greatly improved.

关键词： vanadium dioxide temperature coefficients of resistivity oxygen partial pressure RF reactive sputtering

Progress in glial cell studies in some laboratories in china

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Science china(Life sciences) 2010年第3期53卷 330-337页

作者： DUAN ShuMin Institute of Neuroscience,state key laboratory of Neuroscience,shanghai Institutes for Biological sciences,chinese academy of sciences,shanghai china,200031 1. Institute of Neuroscience State Key Laboratory of Neuroscience Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China 200031

Glial cells in the central nervous system(CNS) consist of a heterogeneous population of cell types,each characterized by distinct morphological features,physiological properties,and specific *** contrast to the previous view that glial cells were passive elements in the brain,accumulating evidence suggests that glial cells are active participants in various brain functions and brain *** review summarizes recent progress of glial cell studies from several groups in china,ranging from studies about the mechanisms of neuron-glia crosstalking to investigations on the roles of glial cells in various CNS disorders.

关键词： neuron-glia interaction ATP plasticity pain ischemia neural injury and repair