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2021 International Conference on Advances in Optics and Computational Sciences, ICAOCS 2021

作者： Zhu, Wenhuan Kong, Lingwei Long, Wei Shi, Xianglei Zhou, Dayong Sun, Lijie Zhou, Lihua Yang, Guiting Liu, Xiaodong Liu, Hai Bo, Maolin Hou, Xiaoqiang Department of Micro/Nano Electronics School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China State Grid Nanchong Power Supply Company Nanchong China State Key Laboratory of Space Power-Sources Technology Shanghai China Shanghai Institute of Space Power-Sources Shanghai China Guizhou Space Appliance Co. Ltd. Guizhou China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai China Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology of Chongqing Yangtze Normal University Chongqing China

In this paper, we study the band structure engineering of black phosphorus/graphene/MoS2 (BP/graphene/MoS2) van der Waals heterojunctions based on ab initio simulations. The density of state and charge density of BP/MoS2, bilayer-BP/MoS2, bilayer-BP/graphene/MoS2 and graphene/bilayer-BP/MoS2 heterojunctions are also investigated. It is found that the bandgaps of these four heterojunctions are smaller than the case of single layer BP or MoS2. When graphene is inserted into or stacked upon BP and MoS2 layers, the heterojunction can obtain a minimum bandgap and a higher density of state distribution. In the differential charge density diagram, electrons over the carbon, sulfur and phosphorus atoms are lost from those corresponding parts. These investigations based on the band structure engineering of 2D van der Waals heterojunctions can provide an effective guidance to manufacture the future nanoscale high performance photovoltaic and optoelectronic devices. © Published under licence by IOP Publishing Ltd.

关键词： Heterojunctions

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Corrigendum to "Controlled-temperature photothermal and oxidative bacteria killing and acceleration of wound healing by polydopamine-assisted Au-hydroxyapatite nanorods"[Acta Biomaterialia 77 (2018) 352-364]

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Acta biomaterialia 2023年 168卷 674-675页

作者： Xiaomo Xu Xiangmei Liu Lei Tan Zhenduo Cui Xianjin Yang Shengli Zhu Zhaoyang Li Xubo Yuan Yufeng Zheng Kelvin Wai Kwok Yeung Paul K Chu Shuilin Wu Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan 430062 China. School of Materials Science & Engineering Tianjin University Tianjin 300072 China. State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China. Department of Orthopaedics & Traumatology Li Ka Shing Faculty of Medicine The University of Hong Kong Pokfulam Hong Kong China. Department of Physics & Department of Materials Science and Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong China. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan 430062 China School of Materials Science & Engineering Tianjin University Tianjin 300072 China. Electronic address: shuilin.wu@***.

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InP quantum dots-based electroluminescent devices

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Chinese Physics B 2019年第11期28卷 18-24页

作者： Qianqian Wu Fan Cao Lingmei Kong Xuyong Yang School of Material Science and Engineering Shanghai UniversityShanghai 200072China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai UniversityShanghai 200072China

Indium phosphide(InP) quantum dots(QDs) have shown great potential to replace the widely applied toxic cadmiumcontaining and lead perovskite QDs due to their similar emission wavelength range and emission peak width but without intrinsic toxicity. Recently, electrically driven red and green InP-based quantum-dot light-emitting diodes(QLEDs) have achieved great progress in external quantum efficiency(EQE), reaching up to 12.2% and 6.3%, respectively. Despite the relatively poor device performance comparing with cadmium selenide(CdSe)-and perovskite-based QLEDs, these encouraging facts with unique environmental friendliness and solution-processability foreshadow the enormous potential of InP-based QLEDs for energy-efficient, high-color-quality thin-film display and solid-state lighting applications. In this article, recent advances in the research of the InP-based QLEDs have been discussed, with the main focus on device structure selection and interface research, as well as our outlook for on-going strategies of high-efficiency InP-based QLEDs.

关键词： indium phosphide quantum dots light-emitting diodes external quantum efficiency

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Deep Convolutional Long Short-Term Memory Network based video abnormal behavior prediction

Deep Convolutional Long Short-Term Memory Network based vide...

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Big Data & Artificial Intelligence & Software Engineering (ICBASE), International Conference on

作者： Wenqing Mao Yepeng Guan School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai China

A deep convolutional long short-term memory network (DC-LSTM) based video abnormal behavior prediction method has been proposed. The DC-LSTM deepens the single-layer convolution of the convolutional LSTM, which can be applied to suppress structural information ambiguity in predicting multiple frames. Mean square error is combined with structural similarity to perform loss reconstruction for correlative calculating between predicted and input frames. An adaptive dynamic double-threshold strategy based on the loss reconstruction is adopted to determine whether the video is abnormal. Comparisons with some state-of-the-arts have highlighted the superior performance of the proposal.

关键词： Integrated optics Correlation Convolution Prediction methods Mean square error methods Optical imaging Hardware

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A Molecular Strategy to Ni45pt55@Nc Nanoparticles as Efficient and Robust Electrocatalyst for Hydrogen Evolution Reaction

SSRN

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SSRN 2022年

作者： Dong, Qingchen Xia, Weizhen Cheng, Xiaozhe Wu, Jian Gou, Wangyan Qu, Yongquan MOE Key Laboratory of Advanced Display and System Applications Shanghai University 149 Yanchang Road Jingan District Shanghai200072 China School of Mechanical & Electronic Engineering and Automation Shanghai University 99 Shangda Road Baoshan District Shanghai200444 China MOE Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of Technology 79 Yingze West Street Taiyuan030024 China

Metallopolymers have garnered enormously attention as one of the most promising functional materials in recent years. The earth-abundant transition metal alloyed Pt-based nanoparticles (NPs) as pyrolyzed from metallopolymers show appealing prospects in decreasing the Pt-loading amount and enhancing the long-term stability of electrocatalysts. Herein, we reported a molecular strategy for preparation of efficient electrocatalyst of N-doped Ni45Pt55@NC NPs by employing a new-designed metallopolymer P-NiPt as precursor. The morphology, size, and composition of the resultant Ni45Pt55@NC NPs were fully characterized. The results of electrocatalysis experiments indicate that the resultant Ni45Pt55@NC NPs possess outstanding HER electrocatalytic activity with a low Pt-loading amount of 8.35 wt% in 0.5 M H2SO4 electrolyte. The calculated mass activity of Ni45Pt55@NC NPs at the overpotential of 30 mV is 0.232 A/mgPt, which was twice of that of commercial Pt/C (0.085 A/mgPt). In the meantime, the Ni45Pt55@NC NPs display excellent long-term catalytic stability in acid media. We found that such improved HER catalytic activity and stability with low Pt-loading amount could be mainly credited to the interaction between Ni and Pt atoms by the DFT calculation modelling. In a word, this work demonstrates a promising approach to develop efficient and robust electrocatalysts with controllable Pt-loading amount via the molecular strategy. © 2022, The Authors. All rights reserved.

关键词： Electrocatalysts

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Synthesis of ZnO nanorods based on electrospinning technology

Synthesis of ZnO nanorods based on electrospinning technolog...

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2020 International Conference on Environment Science and advanced Energy Technologies, ESAET 2020

作者： Lu, Xiuzhen Sun, Yongqian Jiang, Ziwei Zhang, Maomao Lin, Yang SMIT Center School of Mechatronic Engineering and Automation Shanghai University Shanghai200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai200072 China

A new method for fabrication of ZnO nanorods was reported. ZnO nanorods were synthesized by electrospinning technology and heat treatment with polyvinyl alcohol (PVA) and Zinc acetate as precursor. After heat treatment of ZnO electrospun nanofibers, ZnO nanorods were obtained. Morphology of ZnO nanorods was characterized by Scanning electron microscopy (SEM). Various morphologies, such as sphere, flower and plane composed of ZnO nanorods were observed. Transmission electron microscopy (TEM) images demonstrated ZnO nanorods are a single crystalline structure with a diameter of 100-180 nm. The hexagonal wurtzite structure of ZnO nanorods was determined by X-ray diffraction (XRD) pattern and Raman spectra. © Published under licence by IOP Publishing Ltd.

关键词： Electrospinning

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Polarization-Induced Proton Adsorption and Charge Separation in Pyrene-Based Conjugated Microporous Polymers Via Substituent Regulation for Efficient Photocatalytic Hydrogen Evolution

SSRN

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SSRN 2023年

作者： Ren, Runtang Jiao, Zhengxu Li, Zhanfeng Tian, Yue Liu, Baoyou Yue, Gang Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan030024 China Institute of Carbon Materials College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Technology Innovation Center Ningxia Sinostar Display Material Co. Ltd. Yinchuan750003 China

Constructing photocatalysts with efficient light-harvesting abilities and charge separation properties is highly promising but still challenging for boosting photocatalytic hydrogen evolution from water. Herein, we report a simple and general polarization strategy through substituent regulation such as fluorination, chlorination and cyanation, to promote the photon capture and charge separation and unveil the latent structure–property–activity relationship in pyrene-based conjugated microporous polymers (CMPs). Notably, the introduction of fluorine, chlorine and cyano substituents onto the well-known full donor pyrene-benzene-based CMP network (Py-B) could induce a strong dipole along C–F/–Cl/–CN bonds and the backbone local polarization enhancement due to their strong electron-withdrawing ability, which afforded CMPs have a variety of superior effects such as narrowing band gaps, expanding optical absorption, improving interfacial wettability and solid-state morphology, and promoting charge separation inside organic photocatalysts. As a result, 1.73/2.50/4.69-fold increases of the hydrogen evolution rates of the –F/–Cl/–CN modified CMPs under visible light (λ > 420 nm) irradiation without Pt co-catalysts can be obtained in comparison with the counterpart Py-B (28.5/41.3/77.4 mmol g−1 h−1 vs 16.5 mmol g−1 h−1). Impressively, we find that the photocatalytic performance of this series of photocatalysts is linearly related to the dipole moment of polymers. Our studies reveal that the backbone local polarization enhancement induced by the substituent regulation could achieve high-performance organic photocatalysts toward solar-to-chemical energy conversion. © 2023, The Authors. All rights reserved.

关键词： Polarization

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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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Design of a Capsule Robot system for Gastric Hemorrhage Detection using Luminol

Design of a Capsule Robot System for Gastric Hemorrhage Dete...

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IEEE International Conference on Mechatronics and Automation

作者： Yuchen Mao Jian Guo Shuxiang Guo Qiang Fu Tianjin Key Laboratory for Control Theory & Application Complicated Systems and Intelligent Robot Laboratory School of Electrical Engineering and Automation Tianjin University of Technology Binshui Xidao Extension 391 Tianjin China Shenzhen Institute of Advanced Biomedical Robot Co. Ltd No.12 Ganli Sixth Road Jihua Street Longgang District Shenzhen China Key Laboratory of Convergence Medical Engineering System and Healthcare Technology The Ministry of Industry and Information Technology School of Life Science Beijing Institute of Technology No.5 Zhongguancun South Street Beijing China

Gastric hemorrhage in upper gastrointestinal bleeding is an obvious indicator of deteriorating gastric disease. This paper proposes a capsule robot system for detecting bleeding in the stomach. The patient ingests a capsule robot containing luminol reagent, which detects bleeding in the stomach via chemiluminescence. The MCU receives the optical sensor signal, and the data is transmitted via radio frequency. The external lower computer receives and forwards the data to the upper computer for processing and display. The data is used to determine the presence and amount of stomach bleeding. Chemiluminescence is an excellent sensor, requiring no external energy supply, and demonstrating excellent sensitivity and selectivity. Combining chemical and electronic sensors presents opportunities for further development. Capsule robot detection reduces the discomfort and risk of secondary injury associated with traditional endoscopy. This paper establishes an experimental platform using porcine blood to simulate human blood, demonstrating the feasibility of the system.

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Printable organic light-emitting diodes for next-generation visible light communications:a review

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advanced Photonics Nexus 2023年第4期2卷 1-14页

作者： Kunping Guo Zhe Tang Xingxing Chou Saihu Pan Chunchen Wan Tao Xue Liping Ding Xiao Wang Jin Huang Fanghui Zhang Bin Wei Shaanxi University of Science and Technology School of Electronic Information and Artificial IntelligenceXi’anChina University College London Department Physics and Astronomy and London Centre for NanotechnologyLondonUnited Kingdom Shaanxi University of Science and Technology School of Electrical and Control EngineeringXi’anChina Changzhou University School of Microelectronics and Control EngineeringChangzhouChina Shanghai University Ministry of EducationKey Laboratory of Advanced Display and System ApplicationsShanghaiChina

Visible light communication(VLC)is an emerging technology employing light-emitting diodes(LEDs)to provide illumination and wireless data transmission *** cost-efficient printable organic LEDs(OLEDs)as environmentally friendly transmitters in VLC systems is extremely attractive for future applications in spectroscopy,the internet of things,sensing,and optical ranging in ***,we summarize the latest research progress on emerging semiconductor materials for LED sources in VLC,and highlight that OLEDs based on nontoxic and cost-efficient organic semiconductors have great opportunities for optical *** further examine efforts to achieve high-performance white OLEDs for general lighting,and,in particular,focus on the research status and opportunities for OLED-based *** solution-processable fabrication and printing strategies to develop high-performance OLEDs are also ***,an outlook on future challenges and potential prospects of the next-generation organic VLC is provided.

关键词： organic light-emitting diode visible light communication printable vehicular applications internet of things

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