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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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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
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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 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
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© 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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A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements EI SCIE PubMed Scopus
期刊论文 | 2018 , 18 (4) | SENSORS
WoS CC Cited Count: 4 SCOPUS Cited Count: 6
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Abstract :

An In2O3/ITO thin film thermocouple was prepared via screen printing. Glass additives were added to improve the sintering process and to increase the density of the In2O3/ITO films. The surface and cross-sectional images indicate that both the grain size and densification of the ITO and In2O3 films increased with the increase in annealing time. The thermoelectric voltage of the In2O3/ITO thermocouple was 53.5 mV at 1270 degrees C at the hot junction. The average Seebeck coefficient of the thermocouple was calculated as 44.5 mu V/degrees C. The drift rate of the In2O3/ITO thermocouple was 5.44 degrees C/h at a measuring time of 10 h at 1270 degrees C.

Keyword :

screen printing thermocouple thermoelectric response Seebeck coefficient

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GB/T 7714 Liu, Yantao , Ren, Wei , Shi, Peng et al. A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements [J]. | SENSORS , 2018 , 18 (4) .
MLA Liu, Yantao et al. "A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements" . | SENSORS 18 . 4 (2018) .
APA Liu, Yantao , Ren, Wei , Shi, Peng , Liu, Dan , Zhang, Yijun , Liu, Ming et al. A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements . | SENSORS , 2018 , 18 (4) .
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Reversible switch between underwater superaerophilicity and superaerophobicity on the superhydrophobic nanowire-haired mesh for controlling underwater bubble wettability EI SCIE Scopus
期刊论文 | 2018 , 8 (4) | AIP ADVANCES
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

Controlling the underwater bubble wettability on a solid surface is of great research significance. In this letter, a simple method to achieve reversible switch between underwater superaerophilicity and underwater superaerophobicity on a superhydrophobic nanowire-haired mesh by alternately vacuumizing treatment in water and drying in air is reported. Such reversible switch endows the as-prepared mesh with many functional applications in controlling bubble's behavior on a solid substrate. The underwater superaerophilic mesh is able to absorb/capture bubbles in water, while the superaerophobic mesh has great anti-bubble ability. The reversible switch between underwater superaerophilicity and superaerophobicity can selectively allow bubbles to go through the resultant mesh; that is, bubbles can pass through the underwater superaerophilic mesh while are fully intercepted by the underwater superaerophobic mesh in a water medium. We believe these meshes will have important applications in removing or capturing underwater bubbles/gas. (C) 2018 Author(s).

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GB/T 7714 Shan, Chao , Yong, Jiale , Yang, Qing et al. Reversible switch between underwater superaerophilicity and superaerophobicity on the superhydrophobic nanowire-haired mesh for controlling underwater bubble wettability [J]. | AIP ADVANCES , 2018 , 8 (4) .
MLA Shan, Chao et al. "Reversible switch between underwater superaerophilicity and superaerophobicity on the superhydrophobic nanowire-haired mesh for controlling underwater bubble wettability" . | AIP ADVANCES 8 . 4 (2018) .
APA Shan, Chao , Yong, Jiale , Yang, Qing , Chen, Feng , Huo, Jinglan , Zhuang, Jian et al. Reversible switch between underwater superaerophilicity and superaerophobicity on the superhydrophobic nanowire-haired mesh for controlling underwater bubble wettability . | AIP ADVANCES , 2018 , 8 (4) .
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Evaluation of width and width uniformity of near-field electrospinning printed micro and sub-micrometer lines based on optical image processing EI SCIE Scopus
期刊论文 | 2018 , 28 (3) | JOURNAL OF MICROMECHANICS AND MICROENGINEERING
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

This paper presents an experimental study using image processing to investigate width and width uniformity of sub-micrometer polyethylene oxide (PEO) lines fabricated by near-filed electrospinning (NFES) technique. An adaptive thresholding method was developed to determine the optimal gray values to accurately extract profiles of printed lines from original optical images. And it was proved with good feasibility. The mechanism of the proposed thresholding method was believed to take advantage of statistic property and get rid of halo induced errors. Triangular method and relative standard deviation (RSD) were introduced to calculate line width and width uniformity, respectively. Based on these image processing methods, the effects of process parameters including substrate speed (v), applied voltage (U), nozzle-to-collector distance (H), and syringe pump flow rate (Q) on width and width uniformity of printed lines were discussed. The research results are helpful to promote the NFES technique for fabricating high resolution micro and sub-micro lines and also helpful to optical image processing at sub-micro level.

Keyword :

optical image processing width and width uniformity near-field electrospinning (NFES) sub-micrometer process parameters

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GB/T 7714 Zhao, Libo , Xia, Yong , Hebibul, Rahman et al. Evaluation of width and width uniformity of near-field electrospinning printed micro and sub-micrometer lines based on optical image processing [J]. | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2018 , 28 (3) .
MLA Zhao, Libo et al. "Evaluation of width and width uniformity of near-field electrospinning printed micro and sub-micrometer lines based on optical image processing" . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING 28 . 3 (2018) .
APA Zhao, Libo , Xia, Yong , Hebibul, Rahman , Wang, Jiuhong , Zhou, Xiangyang , Hu, Yingjie et al. Evaluation of width and width uniformity of near-field electrospinning printed micro and sub-micrometer lines based on optical image processing . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2018 , 28 (3) .
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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
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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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A Novel Single-Axis MEMS Tilt Sensor with a High Sensitivity in the Measurement Range from 0 degrees to 360 degrees EI SCIE PubMed Scopus
期刊论文 | 2018 , 18 (2) | SENSORS
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

In this paper, a novel single-axis MEMS tilt sensor is presented. It contains a hexagonal proof mass, six micro-lever force amplifiers and three double-ended-tuning fork (DETF) resonant strain gauges. The proof mass is placed in the center with the micro-levers and the DETFs radially arrayed around. The variation of gravity acceleration applied on the proof mass will result in frequency shifts of the DETFs. Angular tilt can be got by analyzing the frequency outputs. The structural design of the tilt sensor is optimized by finite element simulation and the device is microfabricated using a silicon-on-insulator process, followed by open-loop and closed-loop characterizations. Results show that the scale factor of such sensor is at least 11.53 Hz/degree. Minimum Allan deviation of the DETF oscillator is 220 ppb (parts per billion) of the resonant frequency for an 5 s integration time. Resolution of the tilt sensor is 0.002 degrees in the whole measurement range from 0 degrees to 360 degrees.

Keyword :

double-ended tuning fork MEMS oscillator resonator tilt sensor

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GB/T 7714 Wang, Shudong , Wei, Xueyong , Weng, Yinsheng et al. A Novel Single-Axis MEMS Tilt Sensor with a High Sensitivity in the Measurement Range from 0 degrees to 360 degrees [J]. | SENSORS , 2018 , 18 (2) .
MLA Wang, Shudong et al. "A Novel Single-Axis MEMS Tilt Sensor with a High Sensitivity in the Measurement Range from 0 degrees to 360 degrees" . | SENSORS 18 . 2 (2018) .
APA Wang, Shudong , Wei, Xueyong , Weng, Yinsheng , Zhao, Yulong , Jiang, Zhuangde . A Novel Single-Axis MEMS Tilt Sensor with a High Sensitivity in the Measurement Range from 0 degrees to 360 degrees . | SENSORS , 2018 , 18 (2) .
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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: 4
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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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A Review of Femtosecond-Laser-Induced Underwater Superoleophobic Surfaces SCIE Scopus
期刊论文 | 2018 , 5 (7) | ADVANCED MATERIALS INTERFACES
WoS CC Cited Count: 8 SCOPUS Cited Count: 7
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Underwater superoleophobic surfaces have attracted increasing interest because of their remarkable antioil ability and wide range of promising applications. In the meantime, femtosecond laser microfabrication becomes a rising star in the field of micro/nanomanufacturing based on the advantages of negligible heat-affected zone, no-contact process, precise ablation threshold, and high resolution. The collision of femtosecond laser microfabrication and achieving underwater superoleophobicity finally produces some colorful fireworks. In this review, the recent progress of femtosecond-laser-induced underwater superoleophobic surfaces, mainly including materials, fabrication, properties, multifunctions, and applications, is summarized. The related background is first introduced to show the principle for creating an underwater superoleophobic surface and the unique features of femtosecond laser. Based on the principle of ''from in-air superhydrophilicity to underwater superoleophobicity,'' underwater superoleophobicity is achieved on different kinds of materials surfaces by simple femtosecond laser ablation. Furthermore, the femtosecond-laser-induced underwater superoleophobic surfaces can also be endowed with some additional properties such as controllable oil adhesion, underwater anisotropic oil wettability, good transparency, and durability, leading to the resultant surfaces that have various practical applications. The development of underwater superoleophobicity is still in its ''toddler stage,'' so the existing challenges and future prospects of this growing field are discussed finally.

Keyword :

superhydrophilicity laser ablation underwater superoleophobicity femtosecond laser microfabrication antioil

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GB/T 7714 Yong, Jiale , Chen, Feng , Yang, Qing et al. A Review of Femtosecond-Laser-Induced Underwater Superoleophobic Surfaces [J]. | ADVANCED MATERIALS INTERFACES , 2018 , 5 (7) .
MLA Yong, Jiale et al. "A Review of Femtosecond-Laser-Induced Underwater Superoleophobic Surfaces" . | ADVANCED MATERIALS INTERFACES 5 . 7 (2018) .
APA Yong, Jiale , Chen, Feng , Yang, Qing , Jiang, Zhuangde , Hou, Xun . A Review of Femtosecond-Laser-Induced Underwater Superoleophobic Surfaces . | ADVANCED MATERIALS INTERFACES , 2018 , 5 (7) .
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