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Ingeniously designed Ni-Mo-S/ZnIn_(2)S_(4) composite for multi-photocatalytic reaction systems

Chinese Chemical Letters 2022年第3期33卷 1468-1474页

作者： Jing Chen Yumei Tang Shihao Wang Lingbin Xie Cheng Chang Xiaolei Cheng Mingming Liu Longlu Wang Lianhui Wang College of Electronic and Optical Engineering&College of Microelectronics Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and DevicesNanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts and TelecommunicationsNanjing 210023China

Molybdenum disulfide (MoS_(2)) with low cost, high activity and high earth abundance has been found to be a promising catalyst for the hydrogen evolution reaction (HER), but its catalytic activity is considerably limited due to its inert basal planes. Here, through the combination of theory and experiment, we propose that doping Ni in MoS_(2) as catalyst can make it have excellent catalytic activity in different reaction systems. In the EY/TEOA system, the maximum hydrogen production rate of EY/Ni-Mo-S is 2.72 times higher than that of pure EY, which confirms the strong hydrogen evolution activity of Ni-Mo-S nanosheets as catalysts. In the lactic acid and Na_(2)S/Na_(2)SO_(3) systems, when Ni-Mo-S is used as co-catalyst to compound with ZnIn_(2)S_(4) (termed as Ni-Mo-S/ZnIn_(2)S_(4)), the maximum hydrogen evolution rates in the two systems are 5.28 and 2.33 times higher than those of pure ZnIn_(2)S_(4), respectively. The difference in HER enhancement is because different systems lead to different sources of protons, thus affecting hydrogen evolution activity. Theoretically, we further demonstrate that the Ni-Mo-S nanosheets have a narrower band gap than MoS_(2), which is conducive to the rapid transfer of charge carriers and thus result in multi-photocatalytic reaction systems with excellent activity. The proposed atomic doping strategy provides a simple and promising approach for the design of photocatalysts with high activity and stability in multi-reaction systems.

关键词： Molybdenum disulfide(MoS_(2)) Ni-Mo-S nanosheets Multi-reaction systems Hydrogen evolution reaction(HER) Atomic doping strategy

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Efficient Wavelet Channel Attention Module with a Fusion Network for Image Super-Resolution 18th

Efficient Wavelet Channel Attention Module with a Fusion N...

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18th International Forum of Digital Multimedia Communication, IFTC 2021

作者： Han, Xiyu Ma, Jian Xu, Guoming An, Ping Ma, Ran School of Internet Anhui University Hefei230039 China School of Computer Science Fudan University Shanghai200433 China Key Laboratory of Advance Displays and System Application Ministry of Education Shanghai University Shanghai200444 China

ISBN: (纸本)9789811922657

In recent years, deep convolutional neural networks (CNNs) have been generally used in image Super-Resolution (SR) and has made great progress. Nevertheless, the existing CNNs based SR method cannot fully search the background information in the step of feature extraction. Moreover, the later network pursues too much deeper and heavier, thus ignoring the desired performance of SR. To solve the problem, we project a learning wavelets and channel attention network (LWCAN) for image SR. The network mainly comprises three branches. The first part extracts the low-level feature from the input image through two convolution layers and the Efficient Channel Attention (ECA) block. The second part is calculating the second level low frequency wavelet coefficient. The third part is used for forecasting the residual frequency bands of wavelet coefficient. Finally, the reverse wavelet transform is used to reconstruct the SR image from these coefficients. Experiments on the common used dataset prove the effectiveness of our projected LWCAN in the light of visual effects and quantitative metrics. © 2022, Springer Nature Singapore Pte Ltd.

关键词： Wavelet transforms

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Disparity compensation based 3D holoscopic image coding using HEVC

Disparity compensation based 3D holoscopic image coding usin...

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IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)

作者： Deyang Liu Ping An Ran Ma Liquan Shen School of Communication and Information Engineering Shanghai University Shanghai China Ministry of Education Key Laboratory of Advanced Displays and System Application Shanghai China

ISBN: (纸本)9781479919499

3D holoscopic image can provide true 3D content by reproducing the light rays of the 3D scene and is regarded as a promising technique for future 3D TV. Disparity information is paramount intrinsic characteristic of the 3D holoscopic image. In this paper, a disparity compensation based 3D holoscopic image coding algorithm using HEVC is put forward. In order to drive an authentic disparity, we expand the available area outwards in the disparity matching process instead of dividing the current coding block into four parts. Experimental results demonstrate that the proposed method can obtain considerable gains over original HEVC intra-prediction and the classical TMP algorithm with acceptable complexity increasing compared to original HEVC standard.

关键词： Three-dimensional displays Image coding Encoding Video coding Imaging Standards Image reconstruction

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Stereoscopic video conversion based on depth tracking

Stereoscopic video conversion based on depth tracking

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International Conference on Signal Processing Proceedings (ICSP)

作者： Yanfei Wu Ping An Ping Wang Zhao Yang Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China

Conventional 2D-to-3D conversion approaches always have some problems due to fast motion and non-rigid objects. In this proposed approach, a bi-direction optical flow is used to extract credible corner points from original sequences, and then Mean Shift algorithm helps to segment foreground object. In addition, improved active contour model offers more accurate outlines. Finally depth correlation gets to deal with the temporal depth variation caused by objects' motion or camera motion. The experimental results give good performance with higher accuracy.

关键词： Tracking Computer vision Image motion analysis Adaptive optics Three dimensional displays Image color analysis Motion segmentation

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A Location Strategy for Traffic Emission Remote Sensing system Based on Bus Routes 36

A Location Strategy for Traffic Emission Remote Sensing Syst...

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第36届中国控制会议

作者： Yuxiao Yang Zerui Li Yu Kang Department of Automation University of Science and Technology of China State Key Laboratory of Fire Science University of Science and Technology of China Institute of Advanced Technology University of Science and Technology of China Key Laboratory of Technology in Geo-Spatial Information Processing and Application System Chinese Academy of Sciences

ISBN: (纸本)9781538629185

This paper presents a novel location strategy for traffic emission remote sensing system（TERSS） based on bus *** the purpose of reducing cost,the corresponding Hypergraph Model is established based on graph theory and the topological structure of urban road ***,the location problem of traffic emission remote sensing detectors is defined and transformed into finding the minimum transversal of the Hypergraph which is used to obtain the location scheme for TERSS based on bus routes according to Boolean algebra ***,the proposed location strategy helps to obtain a location scheme for a city bus system to monitor buses as many as possible.

关键词： Location strategy TERSS bus routes Boolean algebra

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Parallax-aware local alignment for image stitching under large occlusion/disocclusion

Parallax-aware local alignment for image stitching under lar...

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IEEE Visual Communications and Image Processing (VCIP)

作者： Yangxin Wang Kai Li Ping An Liquan Shen Xuemei Zou School of Communication and Information Engineering Shanghai University Shanghai China Ministry of Education Key Laboratory of Advanced Displays and System Application Shanghai China

ISBN: (纸本)9781509053179

This paper presents a parallax-aware image stitching approach under large occlusion/disocclusion. Different from previous research, we explore the image stitching issue in a parallax-aware perspective via local alignment. Specifically, we first label each feature point with a probability of being large parallax by developing a graph-based optimization framework. Afterwards, an integer programming model is built to pick out a group of feature matches free from parallax in a local region. Finally, by enforcing a stitching seam passing through such a locally aligned area, we are able to generate a high-quality stitching result under large parallax. Experimental results demonstrate the effectiveness and superiority of the proposed parallax-aware approach.

关键词： Optimization Transforms Cameras Labeling Linear programming Image color analysis Feature extraction

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Organic thin film transistors with PMMA modified insulator

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Optoelectronics Letters 2007年第6期3卷 435-437页

作者： LIU Xiang BAI Yu ZHU Wen-qing JING Xue-yin ZHANG Zhi-lin Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai200072 China. Department of Materials Science Shanghai University Jiading Campus Shanghai 201800 China

A double insulation layer structure organic thin films transistor （OTFT） was investigated for improving the performance of the SiO2 gate insulator. A 50 nm PMMA layer was coated on top of the SiO2 gate insulator as the organic insulator layer. The results demonstrated that using inorganic/organic compound insulator as the gate dielectric layer is an effective method to fabricate OTPTs with improved electric characteristics and decreased leakage current. Electrical parameters of carrier mobility and on/off ratio were calculated. OTPT based on Si substrate with a field-effect mobility of 4.0 × 10^-3cm^2/Vs and on/off ratio of l0^4 was obtained.

关键词：薄膜晶体管绝缘体灯管电源

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Photothermy-strengthened photocatalytic activity of polydopamine-modified metal-organic frameworks for rapid therapy of bacteria-infected wounds

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Journal of Materials Science & Technology 2021年第3期62卷 83-95页

作者： Donglin Han Yuan Li Xiangmei Liu Kelvin Wai Kwok Yeung Yufeng Zheng Zhenduo Cui Yanqin Liang Zhaoyang Li Shengli Zhu Xianbao Wang Shuilin Wu School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhan 430062China Department of Orthopaedics&Traumatology Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong 999077China State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China

Herein,a metal-organic framework(MOF)was modified using polydopamine(PDA)to develop the MOFPDA as a photoresponsive bacteria-killing agent under 660 nm light *** modification using PDA led to the production of not only more heat,but also much more~1O_(2).This is because the PDA could interact with the porphyrin ring of the MOF throughπ-πinteraction and the charge transfer between PDA and the MOFs decreases the ene rgy of the band of hybrid *** addition,greater levels of hyperthermia induced by PDA modification accelerated the charge trans fe r,which significantly strengthened the photocatalytic perfo rmance of MO ***,after modification,the light abso rbance and water dispersibility of nanoparticles were both enhanced;both are important for the improvement of photocatalytic and photothermal ***,MOF-PDA exhibited the highly effective antibacterial efficacy of 99.62%and 99.97%against Staphylococcus aureus and Escherichia coli,respectively,under 20 min 660 nm light irradiation.

关键词： Metal-organic framework Photosensitizer Antibacterial Photothermal Wound healing

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Brief Review of Silver Sinter-bonding Processing for Packaging High-temperature Power Devices

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Chinese Journal of Electrical Engineering 2020年第3期6卷 25-34页

作者： Haidong Yan Peijie Liang Yunhui Mei Zhihong Feng School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin 541004China Guangxi Key Lab of Manufacturing System and Advanced Manufacturing Technology Guilin 541004China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Guilin 541004China National Key Lab of Application Specific Integrated Circuit Hebei Semiconductor Research InstituteShijiazhuang 050051China

Silver sintering is receiving increasing attention due to its novel die-attach technique for high-temperature power *** thermal conductivity,high melting point/remelting temperature and low-temperature sintering behaviors of the silver sintered attachment meet the requirements of high-temperature applications for power devices,specifically SiC *** merits and demerits of the existing pressure-assisted sintering and pressure-less sintering techniques using nano-scale,micro-scale and micro-nano-scale hybrid silver sintered materials are separately *** emerging rapid sintering approaches,such as the electric-assisted approach,are briefly introduced and the technical outlook is *** addition,the study highlights the importance of creating a brief resource guide on using the correct sintering methods.

关键词： Pressure-less sintering pressure-assisted nanosilver paste high-temperature power module insulated gate bipolar translators(IGBT) silicon carbide(SiC)

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A High Gray Scale TFT-LCD Drive system

A High Gray Scale TFT-LCD Drive System

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2008 International Conference on Audio，Language and Image Processing(2008国际声音、语言、图像过程大会)

作者： Zhijie Tang Ran Feng Meihua Xu Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai Universi Microelectronic Research and Development Center Shanghai University Shanghai 200072 China

This paper describes a new drive method of TFT-LCD for high gray scale display. The method is based on Rotating Ordered dithering algorithm and frame modulating technology. This method can use low-bit gray scale TFT-LCD panel to realize a high gray scale display. This method is applied to a 1280*1024 dots RGB 6-bit TFT-LCD panel which can display 256-level gray scale.

关键词： Thin film transistors Pixel Artificial neural networks SDRAM Image color analysis Drives Modulation

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