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学者姓名:蒋庄德

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< Page ,Total 56 >
Microstructure and thermoelectric properties of In2O3/ITO thin film thermocouples with Al2O3 protecting layer EI SCIE
期刊论文 | 2019 , 30 (2) , 1786-1793 | Journal of Materials Science: Materials in Electronics
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Abstract :

In2O3/ITO thin film thermocouples (TFTCs) with alumina protecting layer were fabricated on alumina substrates. The effects of protecting layer on their performance at higher temperature and long term service were investigated accordingly. In2O3 and ITO thin films were prepared by radio frequency magnetron sputtering methods, while the alumina protecting layer was prepared by traditional spin-coating methods. Microstructural and thermoelectric properties of the In2O3/ITO TFTCs with and without alumina (Al2O3) protecting layer were investigated as a function of sintering time from 2 to 10 h at 1250 °C. The results show that, the existence of alumina protecting layer can effectively increase the performance capabilities of thermocouples at high temperatures by inhibiting the volatilization of the thin film. In2O3/ITO TFTCs with protecting layer can work normally over 10 h at 1250 °C while Seebeck coefficient is 131.7 µV/°C. The drift rate can reach 3.05 °C/h, which is much better than those without protecting layer. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Keyword :

Alumina substrates Long term service Performance capability Protecting layer Radio frequency magnetron sputtering method Spin-coating method Thermoelectric properties Thin film thermocouple

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GB/T 7714 Liu, Yantao , Ren, Wei , Shi, Peng et al. Microstructure and thermoelectric properties of In2O3/ITO thin film thermocouples with Al2O3 protecting layer [J]. | Journal of Materials Science: Materials in Electronics , 2019 , 30 (2) : 1786-1793 .
MLA Liu, Yantao et al. "Microstructure and thermoelectric properties of In2O3/ITO thin film thermocouples with Al2O3 protecting layer" . | Journal of Materials Science: Materials in Electronics 30 . 2 (2019) : 1786-1793 .
APA Liu, Yantao , Ren, Wei , Shi, Peng , Liu, Dan , Zhang, Yijun , Liu, Ming et al. Microstructure and thermoelectric properties of In2O3/ITO thin film thermocouples with Al2O3 protecting layer . | Journal of Materials Science: Materials in Electronics , 2019 , 30 (2) , 1786-1793 .
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The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor SCIE
期刊论文 | 2019 , 28 (2) , 298-310 | JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
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Abstract :

A novel micro force sensor based on depletion type vertically movable gate array field effect transistor (VMGAFET) was developed with cross-axis decoupling structure and eight gate arrays. This novel sensor is able to detect ultra-low force and exhibit high measuring sensitivity. An accurate electrical model was then proposed and compared with a long channel model, which is better adopted in small-sized devices to predict the electrical performance of this sensor. We also developed a mechanical model for the micro force sensor. Finite element method simulations were conducted, and the results were in accordance with the theoretical ones. Then, a feasible fabrication process was illustrated for the proposed sensor. The measuring sensitivity and nonlinearity of the micro force sensor with the proposed structure and dimension parameters are 12.528 mu A/nN and <1.35%, respectively. These theoretical analyses provide insights into the design of depletion type VMAGFET-based sensor and other kinds of devices based on movable gate field effect transistor or with similar movable structures.

Keyword :

Ultra-low force sensor movable gate depletion type high measuring sensitivity field effect transistor

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GB/T 7714 Gao, Wendi , Jia, Chen , Jiang, Zhuangde et al. The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor [J]. | JOURNAL OF MICROELECTROMECHANICAL SYSTEMS , 2019 , 28 (2) : 298-310 .
MLA Gao, Wendi et al. "The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor" . | JOURNAL OF MICROELECTROMECHANICAL SYSTEMS 28 . 2 (2019) : 298-310 .
APA Gao, Wendi , Jia, Chen , Jiang, Zhuangde , Zhou, Xiangyang , Zhao, Libo , Sun, Dong . The Design and Analysis of a Novel Micro Force Sensor Based on Depletion Type Movable Gate Field Effect Transistor . | JOURNAL OF MICROELECTROMECHANICAL SYSTEMS , 2019 , 28 (2) , 298-310 .
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A novel three-dimensional spiral CoNi LDHs on Au@ErGO wire for high performance fiber supercapacitor electrodes EI Scopus SCIE
期刊论文 | 2019 , 236 , 728-731 | Materials Letters
WoS CC Cited Count: 1 SCOPUS Cited Count: 2
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Abstract :

© 2018 Elsevier B.V. This work demonstrates a novel three-dimensional (3D) spiral fiber electrode, fabricated by electrochemically reducing of graphene oxide (GO) on Au wire followed with electrodeposition of CoNi layered double hydroxides (LDHs). The advanced electrode possesses combined features of micro size, good flexibility, high specific capacitance, excellent rate capability, and long cycling life, making it promises great potential as effective energy sources to integrate with other devices for wearable electronics.

Keyword :

CoNi LDHs Electrodeposition Fiber supercapacitor Microstructure Nanocomposites Wearable electronics

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GB/T 7714 Luo, Guoxi , Siong Teh, Kwok , Xia, Yong et al. A novel three-dimensional spiral CoNi LDHs on Au@ErGO wire for high performance fiber supercapacitor electrodes [J]. | Materials Letters , 2019 , 236 : 728-731 .
MLA Luo, Guoxi et al. "A novel three-dimensional spiral CoNi LDHs on Au@ErGO wire for high performance fiber supercapacitor electrodes" . | Materials Letters 236 (2019) : 728-731 .
APA Luo, Guoxi , Siong Teh, Kwok , Xia, Yong , Luo, Yunyun , Li, Zhikang , Wang, Shubei et al. A novel three-dimensional spiral CoNi LDHs on Au@ErGO wire for high performance fiber supercapacitor electrodes . | Materials Letters , 2019 , 236 , 728-731 .
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Optimizing electrospinning-hydrothermal hybrid process based on Taguchi method for modulation of point defects in ZnO micro/nano arrays towards photoelectronic application EI SCIE
期刊论文 | 2019 , 779 , 167-174 | Journal of Alloys and Compounds
WoS CC Cited Count: 1
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Abstract :

Unlike previous work generally adopting high temperature annealing (≥500 °C) to suppress defects in hydrothermal grown ZnO, this work suppressed ZnO defects by optimizing overall process parameters of low temperature electrospinning-hydrothermal hybrid process (≤300 °C) with Taguchi method and Analysis of Variance (ANOVA). Sum ratio of defect peaks to eigen peaks (SRDE) in room-temperature photoluminescence (PL) spectrum was proposed to evaluate defect conditions in 27 experiments (L27 (38)). With the optimal process, good crystal quality (SRDE = 0.31) was achieved at low temperature (200 °C), of which the SRDE decreased by 68.04% compared with the initial counterpart. Then confirmation experiment was conducted to validate the selected levels, and results of signal-to-noise ratio (SNR) showed good agreement with the predicted ones. Besides, the response time and recovery time of the ZnO photodetectors with optimal process were decreased by 72.5% and 79.3%, respectively, compared with the initial ones. This method can also be used to fabricate ZnO materials with other wanted defect features. © 2018

Keyword :

Crystal qualities High-temperature annealing Hybrid process Low temperatures Low-temperature electrospinning Micro/nano Overall process Room temperature photoluminescence spectrums

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GB/T 7714 Xia, Yong , Zhao, Libo , Luo, Yunyun et al. Optimizing electrospinning-hydrothermal hybrid process based on Taguchi method for modulation of point defects in ZnO micro/nano arrays towards photoelectronic application [J]. | Journal of Alloys and Compounds , 2019 , 779 : 167-174 .
MLA Xia, Yong et al. "Optimizing electrospinning-hydrothermal hybrid process based on Taguchi method for modulation of point defects in ZnO micro/nano arrays towards photoelectronic application" . | Journal of Alloys and Compounds 779 (2019) : 167-174 .
APA Xia, Yong , Zhao, Libo , Luo, Yunyun , Hebibul, Rahman , Wang, Jiuhong , Li, Lei et al. Optimizing electrospinning-hydrothermal hybrid process based on Taguchi method for modulation of point defects in ZnO micro/nano arrays towards photoelectronic application . | Journal of Alloys and Compounds , 2019 , 779 , 167-174 .
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A closed-form approach for the resonant frequency analysis of clamped rectangular microplates under distributed electrostatic force EI SCIE Scopus
期刊论文 | 2018 , 280 , 447-458 | SENSORS AND ACTUATORS A-PHYSICAL
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Abstract :

This paper proposes a fast-converged reduced-order model for small vibrations of electrostatically actuated rectangular microplates around their deformed states. On this foundation, one-mode analysis method and thus closed-form analytical expressions are developed for the fundamental resonant frequency analysis. Numerical multi-mode analysis is conducted to investigate the convergence. It is concluded that the one-mode analysis method can give a converged solution, which demonstrates that the proposed model has a faster convergence than previous models where multi modes are needed. The directly calculated resonant frequencies by the closed-form expressions are in good agreement with the numerical results by FEM simulations with less than 5% variation before pull-in. Parametric study shows the closed-form expressions are applicable to the cases in which the thickness is less than 1/20 of the length and width under a nominal length to width ratio of 1 similar to 2.5, and the gap distance is less than or equal to the thickness of the microplate. Additionally, a kind of electrostatic configurations based on multilayer microplates, capacitive micromachined ultrasonic transducers (CMUTs), were used to experimentally validate the closed-form expressions and good agreement was observed. (C) 2018 Elsevier B.V. All rights reserved.

Keyword :

Multilayer microplates Electrostatic microplates One-mode analysis Reduced-order model Resonant frequency Closed-form expressions

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GB/T 7714 Li, Zhikang , Zhao, Libo , Jiang, Zhuangde et al. A closed-form approach for the resonant frequency analysis of clamped rectangular microplates under distributed electrostatic force [J]. | SENSORS AND ACTUATORS A-PHYSICAL , 2018 , 280 : 447-458 .
MLA Li, Zhikang et al. "A closed-form approach for the resonant frequency analysis of clamped rectangular microplates under distributed electrostatic force" . | SENSORS AND ACTUATORS A-PHYSICAL 280 (2018) : 447-458 .
APA Li, Zhikang , Zhao, Libo , Jiang, Zhuangde , Zhao, Yihe , Li, Jie , Zhang, Jiawang et al. A closed-form approach for the resonant frequency analysis of clamped rectangular microplates under distributed electrostatic force . | SENSORS AND ACTUATORS A-PHYSICAL , 2018 , 280 , 447-458 .
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Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation SCIE PubMed
期刊论文 | 2018 , 18 (11) | SENSORS
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Abstract :

An ordinary optical fiber ultra-high temperature sensor based on infrared radiation with the advantages of simple structure and compact is presented. The sensing system consists of a detection fiber and a common transmission fiber. The detector fiber is formed by annealing a piece of ordinary fiber at high temperature twice, which changes the properties of the fiber and breaks the temperature limit of ordinary fiber. The transmission fiber is a bending insensitive optical fiber. A static calibration system was set up to determine the performance of the sensor and three heating experiments were carried out. The temperature response sensitivities were 0.010 dBm/K, 0.009 dBm/K and 0.010 dBm/K, respectively, which indicate that the sensor has good repeatability. The sensor can withstand a high temperature of 1823 K for 58 h with an error of less than 1%. The main reason why the developed ordinary optical fiber sensor can work steadily for a long time at high temperature is the formation of beta-cristobalite, which is stable at high-temperature.

Keyword :

optical fiber sensor high temperature sensing infrared radiation

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GB/T 7714 Lin, Qijing , Zhao, Na , Yao, Kun et al. Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation [J]. | SENSORS , 2018 , 18 (11) .
MLA Lin, Qijing et al. "Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation" . | SENSORS 18 . 11 (2018) .
APA Lin, Qijing , Zhao, Na , Yao, Kun , Jiang, Zhuangde , Tian, Bian , Shi, Peng et al. Ordinary Optical Fiber Sensor for Ultra-High Temperature Measurement Based on Infrared Radiation . | SENSORS , 2018 , 18 (11) .
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An optical fiber Fabry-Perot micro-pressure sensor based on beam-membrane structure EI SCIE
期刊论文 | 2018 , 29 (12) | MEASUREMENT SCIENCE AND TECHNOLOGY
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Abstract :

In this paper, an optical fiber Fabry-Perot (FP) sensor for micro-pressure measurement is proposed. The FP interferometric cavity is composed of an end face of the incident optical fiber and a sensitive silicon diaphragm. The sensitive silicon diaphragm creatively utilizes a beam-membrane structure which is fabricated by micro-electro-mechanical system manufacturing technology. The finite element method simulation results show that the beam-membrane structure can achieve higher sensitivity and better linearity. The sensor performance test platform is built by a ASE-wide spectrum light source, optical spectrum analyzer, micropressure gas source and so on. The phase demodulation method is employed to demodulate the cavity length signal from the spectrum. The measure range of the sensor is 0-10 KPa, and the experimental sensitivity of the cavity length can reach to 242nm KPa-1.

Keyword :

beam-membrane structure FP cavity MEMS micro-pressure optical fiber sensor

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GB/T 7714 Tian, Bian , Zhan, Feng , Han, Feng et al. An optical fiber Fabry-Perot micro-pressure sensor based on beam-membrane structure [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2018 , 29 (12) .
MLA Tian, Bian et al. "An optical fiber Fabry-Perot micro-pressure sensor based on beam-membrane structure" . | MEASUREMENT SCIENCE AND TECHNOLOGY 29 . 12 (2018) .
APA Tian, Bian , Zhan, Feng , Han, Feng , Li, Kaikai , Zhao, Na , Yang, Ning et al. An optical fiber Fabry-Perot micro-pressure sensor based on beam-membrane structure . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2018 , 29 (12) .
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Effect of motion accuracy on material removal during the CMP process for large-aperture plane optics EI SCIE Scopus
期刊论文 | 2018 , 94 (1-4) , 105-119 | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

Chemical-mechanical polishing (CMP) is a key process in the fabrication of high-precision large-aperture plane optics. To satisfy the growing demand for better polishing efficiency and accuracy in CMP process, there is a new focus on the development of a new CMP machine that applies high-precision motion parts including ultra-precision spindles, guideways, rotary table, and numerical control system. In this article, to show how the run-out error of a rotary table affects the polishing efficiency and accuracy, we propose a material-removing model that creatively analyzes the material-removing process at any point N on a workpiece. To verify the model, we performed a variety of analysis and polishing experiments using the KPJ1700 and KPJ1200 CMP machine. For 6-h-long polishing process on the KPJ1700 CMP machine, the surface accuracy of the 400 x 80 mm UBK7 optic varies from 10.51 to 2.94 lambda, and then to 0.32 lambda after another 4 h. For 6-h-long polishing process on the KPJ1200 CMP machine, the surface accuracy of the 430 x 430 mm UBK7 optic varies from 5.78 to 3.48 lambda, and then to 0.8 lambda after another 4 h. The measurement results proved that a smaller run-out error results in higher polishing efficiency and accuracy.

Keyword :

Chemical mechanical polishing Run-out error Stitching measurement Uneven removal Polishing efficiency and accuracy Gas hydrostatic rotary table Large-aperture optics

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GB/T 7714 Zhang, C. P. , Zhao, H. Y. , Xie, R. Q. et al. Effect of motion accuracy on material removal during the CMP process for large-aperture plane optics [J]. | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY , 2018 , 94 (1-4) : 105-119 .
MLA Zhang, C. P. et al. "Effect of motion accuracy on material removal during the CMP process for large-aperture plane optics" . | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 94 . 1-4 (2018) : 105-119 .
APA Zhang, C. P. , Zhao, H. Y. , Xie, R. Q. , Zhao, Z. X. , Gu, Y. W. , Jiang, Z. D. . Effect of motion accuracy on material removal during the CMP process for large-aperture plane optics . | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY , 2018 , 94 (1-4) , 105-119 .
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3D Multi-Microchannel Helical Mixer Fabricated by Femtosecond Laser inside Fused Silica EI SCIE Scopus PubMed
期刊论文 | 2018 , 9 (1) | MICROMACHINES
WoS CC Cited Count: 5 SCOPUS Cited Count: 5
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Abstract :

Three-dimensional (3D) multi-microchannel mixers can meet the requirements of different combinations according to actual needs. Rapid and simple creation of 3D multi-microchannel mixers in a lab-on-a-chip platform is a significant challenge in micromachining. In order to realize the complex mixing functions of microfluidic chips, we fabricated two kinds of complex structure micromixers for multiple substance mixes simultaneously, separately, and in proper order. The 3D multi-microchannel mixers are fabricated by femtosecond laser wet etch technology inside fused silica. The 3D multi-microchannel helical mixers have desirable uniformity and consistency, which will greatly expand their utility and scope of application.

Keyword :

femtosecond laser passive micromixer microstructure fabrication

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GB/T 7714 Shan, Chao , Chen, Feng , Yang, Qing et al. 3D Multi-Microchannel Helical Mixer Fabricated by Femtosecond Laser inside Fused Silica [J]. | MICROMACHINES , 2018 , 9 (1) .
MLA Shan, Chao et al. "3D Multi-Microchannel Helical Mixer Fabricated by Femtosecond Laser inside Fused Silica" . | MICROMACHINES 9 . 1 (2018) .
APA Shan, Chao , Chen, Feng , Yang, Qing , Jiang, Zhuangde , Hou, Xun . 3D Multi-Microchannel Helical Mixer Fabricated by Femtosecond Laser inside Fused Silica . | MICROMACHINES , 2018 , 9 (1) .
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Determination of optimized removal functions for imprinting continuous phase plates using fuzzy theory EI SCIE Scopus
期刊论文 | 2018 , 57 (21) , 6089-6096 | APPLIED OPTICS
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

A new evaluation method based on fuzzy theory was proposed to assess the manufacturing efficiency and accuracy of continuous phase plates (CPPs) with magnetorheological finishing imprinting. Two-dimensional sinusoidal waves were employed to verify the effectiveness of the proposed method theoretically and experimentally in terms of two parameters, error root mean square and processing time, which indicate the accuracy and efficiency of CPP manufacture. The weight factor was used for balancing the priorities of processing time and accuracy in our method. The simulations and experiments were compared based on our proposed method. The results show that the optimum removal functions for various spatial periods result in good agreement between simulations and experiments, and furthermore, relative errors are 6.07%, 2.62%, and 6.00% for CPPs with spatial periods of 12 mm, 18 mm, and 30 mm, respectively. All the results indicate that the method provides a valid and feasible way to select an optimized removal function for imprinting the patterns of CPPs. (C) 2018 Optical Society of America

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GB/T 7714 Hou, Jing , Cao, Mingchen , Wang, Hongxiang et al. Determination of optimized removal functions for imprinting continuous phase plates using fuzzy theory [J]. | APPLIED OPTICS , 2018 , 57 (21) : 6089-6096 .
MLA Hou, Jing et al. "Determination of optimized removal functions for imprinting continuous phase plates using fuzzy theory" . | APPLIED OPTICS 57 . 21 (2018) : 6089-6096 .
APA Hou, Jing , Cao, Mingchen , Wang, Hongxiang , Zhao, Huiying , Zhong, Bo , Jiang, Zhuangde et al. Determination of optimized removal functions for imprinting continuous phase plates using fuzzy theory . | APPLIED OPTICS , 2018 , 57 (21) , 6089-6096 .
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