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Engineering grain boundaries in monolayer molybdenum disulfide for efficient water-ion separation

Science (New York, N.Y.) 2025年第6735期387卷 776-782页

作者： Shen, Jie Aljarb, Areej Cai, Yichen Liu, Xing Min, Jiacheng Wang, Yingge Wang, Qingxiao Zhang, Chenhui Chen, Cailing Hakami, Mariam Fu, Jui-Han Zhang, Hui Li, Guanxing Wang, Xiaoqian Chen, Zhuo Li, Jiaqiang Dong, Xinglong Shih, Kaimin Huang, Kuo-Wei Tung, Vincent Shi, Guosheng Pinnau, Ingo Li, Lain-Jong Han, Yu Physical Sciences and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore Department of Physics King Abdulaziz University Jeddah Saudi Arabia KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) Nanjing China Shanghai Applied Radiation Institute Shanghai Key Laboratory of Atomic Control and Application of Inorganic 2D Supermaterials Shanghai University Shanghai China Department of Mechanical Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Department of Civil Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Imaging and Characterization Core Lab King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Department of Chemical System Engineering School of Engineering University of Tokyo Tokyo Japan Center for Electron Microscopy South China University of Technology Guangzhou China School of Emergent Soft Matter South China University of Technology Guangzhou China Catalyst Center of Excellence (CCoE) Research and Development Center Saudi Aramco Dhahran Saudi Arabia Center for Sustainability and Energy Technologies Chang Gung University Taoyuan Taiwan Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining Qinghai China University of Chinese Academy of Sciences Wenzhou China

Two-dimensional (2D) materials have long been considered as ideal platforms for developing separation membranes. However, it is difficult to generate uniform subnanometer pores over large areas on 2D materials. We report that the well-defined eight-membered ring (8-MR) pores, typically formed at the boundaries of two antiparallel grains of monolayer molybdenum disulfide (MoS2), can serve as molecular sieves for efficient water-ion separation. The density of grain boundaries and, consequently, the number of 8-MR pores can be tuned by regulating the grain size. Optimized MoS2 membranes outperformed the state-of-the-art membranes in forward osmosis tests by demonstrating both ultrahigh water/sodium chloride selectivity and exceptional water permeance. Creating precise pore structures on atomically thin films through grain boundary engineering presents a promising route for producing membranes suitable for various applications.

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Multi-Dimensional Linear Scanning Algorithm for Silicon-based Micro-OLED 17

Multi-Dimensional Linear Scanning Algorithm for Silicon-base...

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17th China International Forum on Solid State Lighting and 2020 International Forum on Wide Bandgap Semiconductors China, SSLChina: IFWS 2020

作者： Zhou, Houda Guo, Aiying Wang, Fei Zhang, Jianhua Shanghai University Ministry of Education Key Laboratory of Advanced Display and System Applications Shanghai200072 China School of Mechanical Engineering and Automation Shanghai University Shanghai200072 China School of Microelectronics Shanghai University Shanghai200072 China

ISBN: (数字)9780738111889

ISBN: (纸本)9780738111889

With the continuous development of display devices and technologies, as a new type of display device, silicon-based Micro-OLED has become a new type of display device in the fields of augmented reality, virtual reality, etc. due to its high brightness, self-luminous, low power consumption, and rich color display. In this paper, the research on the driving scanning algorithm of silicon-based Micro-OLED is carried out. Based on the linearity of the traditional PWM scanning algorithm, the sensitivity parameters of the human eye at different gray levels are added to the randomized gray mapping function. The optimization search is carried out by the combination of degree mapping, and finally a multiple linear scanning algorithm suitable for high refresh rate and high gray level is proposed. Through experiments, the multivariate linear scanning algorithm proposed in this paper has higher linearity than the optimal scanning algorithm, and the scanning efficiency reaches 100%. It has the advantages of reducing the driving frequency and increasing the display frame rate. © 2020 IEEE.

关键词： Augmented reality

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Simulation study on thermal mechanical properties of 4×4 Micro-LED array in flip-chip bonding process

Simulation study on thermal mechanical properties of 4×4 Mi...

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China International Forum o Solid State Lighting: International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)

作者： Xiaoxiao Ji Fei Wang Luqiao Yin Jianhua Zhang Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai China School of Mechatronic Engineering and Automation Shanghai University Shanghai China School of microelectronics Shanghai University Shanghai China

ISBN: (纸本)9781665495479

With the advent of the Micro-light-emitting diodes, it has become the focus of display and visible light communication research. However, as the LED chip size shrinks, the difficulty of integration increase gradually. Nowadays, the integration of Micro- LEDs in display is still a challenge for commercialization. In this work, we conducted a comparative study by finite element method simulation to reveal the influencing factors of bonding yield. The results show that stress concentrates at the junction of the bumps and electrodes of Micro-LED chips, and the stress concentration at the corner of Micro-LED array is more seriously. By altering the parameters of bumps, such as shapes and materials to reduce the stress and stress concentration. Numerical simulate results provide theoretical basis for reducing stress and stress concentration and optimizing the bump shape.

关键词： Shape Tin Light emitting diodes Silicon Indium Bonding Stress

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Research on panoramic illumination imaging system based on SURF algorithm

Research on panoramic illumination imaging system based on S...

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China International Forum o Solid State Lighting: International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)

作者： Fei Wang Xiaoxiao Ji Luqiao Yin Aiying Guo Jianhua Zhang School of microelectronics Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai China School of Mechatronic Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9781665495479

Underwater lighting systems and imaging systems are mainly used in underwater pipeline internal inspection, underwater environment information collection, resource detection, etc. This article explores a panoramic lighting imaging system based on an underwater environment. Mainly from the intelligent lighting system, panoramic imaging system, and system integration optimization. The intelligent lighting system mainly explores a high-brightness intelligent lighting device with a high-brightness lighting system. The imaging system mainly works in conjunction with the lighting system. The imaging system mainly collects 250° panoramic picture information and 250° video information for scientific research and other tasks. Provide appropriate information and data. Finally, system integration optimization and joint work are carried out.

关键词： Temperature Splicing Lighting Imaging system integration Streaming media Real-time systems

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A New Low-power Pixel Circuit for OLEDoS Microdisplay 17

A New Low-power Pixel Circuit for OLEDoS Microdisplay

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17th China International Forum on Solid State Lighting and 2020 International Forum on Wide Bandgap Semiconductors China, SSLChina: IFWS 2020

作者： Hao, Deng Aiying, Guo Feng, Ran Shanghai University Microelectronic Research Development Center 99 Shangda Road Baoshan District Shanghai200444 China Shanghai University Key Laboratory of Advanced Display and System Applications 99 Shangda Road Baoshan District Shanghai200072 China

ISBN: (纸本)9780738111889

In order to solve the problem of high bandwidth data volume and low power consumption of OLEDoS microdisplay panels, this paper proposes a new type of digital low-power pixel circuit. The driving circuit includes a plurality of pixel driving units, which can store multi-pixel bit information at one time, thereby reducing the amount of data read operation. Compared with the traditional digital pixel circuit, the proposed circuit can skip the grayscale data writing process when the picture is still or the rate of change is low, thus reducing the data flow and power consumption. © 2020 IEEE.

关键词： Electric power utilization

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Design of waveguide eyeglass for full-color display with large field of view

Design of waveguide eyeglass for full-color display with lar...

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Computational Optical Sensing and Imaging, COSI 2020 - Part of Imaging and Applied Optics Congress 2020

作者： Shi, Xueliang Liu, Juan Xiao, Jiasheng Han, Jian Beijing Engineering Research Center for Mixed Reality and Advanced Display School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Key laboratory of information system and technology Beijing institute of control and electronic technology Beijing100038 China

A waveguide eyeglass system integrating freeform elements and volume gratings have been proposed and designed. The simulation results show that the hybrid system can show full color images with FOV 31.56°×24... 详细信息

ISBN: (纸本)9781557528209

关键词： Hybrid systems

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CQD-LEDs with High Colour Rendering Index 17

CQD-LEDs with High Colour Rendering Index

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17th China International Forum on Solid State Lighting and 2020 International Forum on Wide Bandgap Semiconductors China, SSLChina: IFWS 2020

作者： Yan, Yuxian Zhang, Doudou Yin, Luqiao Zhang, Jianhua Shanghai University School of Materials Science and Engineering Shanghai200072 China Shanghai University Ministry of Education Key Laboratory of Advanced Display and System Applications Shanghai200072 China School of Mechatronics and Automation Shanghai University Shanghai200072 China

ISBN: (纸本)9780738111889

Quantum dots (QD), which is considered the ideal candidate of third generation semiconductor lighting, has the advantages of high quantum yield, adjustable emission wavelength and narrow full width at half maxima (FWHM), thus it is an ideal choice as the colour converting materials for LEDs. InGaN LEDs are the main choice of solid-state lighting, which is always applied with Ce-doped yttrium aluminum garnet (YAG: Ce3+) yellow phosphor to achieve white light. However, white light achieved by this method has a low colour rendering index (CRI), mainly because of the missing of red spectral components in YAG: Ce3+, thus the CRI is lower than 80 and the correlated colour temperature (CCT) is always above 6500K. In order to increase the CRI of white LEDs, in this paper, we fabricated yellow CQDs and applied it on blue LED chips, red QD films were also used to increase the CRI of our white LEDs. The result shows that the white LEDs with yellow CQDs and red QD films has a max CRI of 94.3 at a driving current of 70mA, the Commission International de L'Eclairage (CIE) chromaticity coordinates are (0.325, 0.3435), and the CCT is 5832K, which is white light with high CRI and can be used in indoor lighting. © 2020 IEEE.

关键词： Yttrium aluminum garnet

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Low-temperature spatial atomic layer deposited Ga2O3 films for high-performance flexible deep ultraviolet photodetector

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Materials Letters 2023年 340卷

作者： Hsu, Chia-Hsun Zhu, Run-Feng Kang, Pin-Chun Gao, Peng Wu, Wan-Yu Wuu, Dong-Sing Lien, Shui-Yang Zhu, Wen-Zhang Xiamen Key Laboratory of Development and Application for Advanced Semiconductor Coating Technology School of Opto-electronic and Communication Engineering Xiamen University of Technology Xiamen361026 China National Measurement and Testing Center for Flat Panel Display Industry Xiamen Institute of Measurement and Testing Xiamen361004 China Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Department of Materials Science and Engineering National United University Miaoli36063 Taiwan Department of Applied Materials and Optoelectronic Engineering National Chi Nan University Nantou54561 Taiwan Department of Materials Science and Engineering Da-Yeh University Changhua51591 Taiwan

This research aims to prepare amorphous gallium oxide (α-Ga2O3) films for use in flexible deep ultraviolet photodetectors. The films are deposited using high-speed spatial atomic layer deposition (SALD) at different substrate temperatures. The experimental results show that the saturating deposition rate at 145–155 °C is four to sixteen times higher than that of temporal ALD. Moreover, under the saturated SALD conditions the deposited film has less carbon impurities, oxygen-related defects, and greater compactness than under non-saturated conditions. Finally, a high-performance flexible deep ultraviolet α-Ga2O3 photodetector with fast decay time of 161 µs and low dark current density of 6.8 × 10-10 A/cm2 is achieved. © 2023 Elsevier B.V.

关键词： Gallium compounds

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Study on Pixel Level Segmentation and Area Quantification of Highway Slope Cracks 1

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3rd EAI International Conference on Artificial Intelligence for Communications and Networks, AICON 2021

作者： Zhang, YunLing Guo, Pei Liu, Pengyu Li, Yaoyao Chen, Shanji Research and Development Center of Transport Industry of Spatial Information Application and Disaster Prevention and Mitigation Technology Beijing100097 China China Highway Engineering Consultants Corporation Beijing100097 China Faculty of Information Technology Beijing University of Technology Beijing100124 China Beijing Laboratory of Advanced Information Networks Beijing100124 China Beijing Key Laboratory of Computational Intelligence and Intelligent System Beijing University of Technology Beijing100124 China School of Physics and Electronic Information Qinghai Nationalities University Xining810007 China

ISBN: (数字)9783030901967

ISBN: (纸本)9783030901950

Highway slope disasters show obvious stage characteristics before the occurrence, and cracks are the early symptoms of most highway slope disasters. Computer vision is widely used in crack detection because of its advantages of high efficiency and low cost. In view of the shortage of traditional crack actual area calculation methods and poor effect, this paper proposes a slope crack pixel level segmentation method based on deep convolutional neural network, so as to generate accurate segmentation of crack morphology. Then, according to the binary segmentation mask, the checkerboard mapping method is proposed to calculate the actual crack area. Finally, the effectiveness and superiority of the proposed checkerboard mapping method are verified and evaluated with a self-made data set of highway crack image. The experimental results show that this method can effectively detect the actual crack area, and the relative error is small. The calculated results can be used as a reference for slope disaster warning. © 2021, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

关键词： Deep neural networks

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Computational Analysis of Quantum Dots as Color Conversion Layer for Micro-LED applications

Computational Analysis of Quantum Dots as Color Conversion L...

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China International Forum o Solid State Lighting: International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)

作者： Pengsen Lin Xiaoxiao Ji Luqiao Yin Jianhua Zhang School of Materials Science and Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai China School of Mechatronics and Automation Shanghai University Shanghai China

ISBN: (纸本)9781665495479

We propose a simulation scheme for studying quantum dot (QD) light effects of full-color micro-light-emitting-diode (micro-LED) arrays. We have studied the influence of QD thickness and concentration on light efficiency. The results show that the QD concentration and thickness have an impact on the light efficiency. When the thickness of the QD is 5 µm, or the maximum light conversion efficiency can be obtained when the concentration is 0.1 mol/L. By analyzing the light field distribution of different QD thicknesses, the light crosstalk phenomenon is observed. This kind of crosstalk can cause blurry display images and should be avoided.

关键词： Analytical models Image color analysis Computational modeling Simulation Quantum dots Crosstalk Optical imaging

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