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Time-sequential color code division multiplexing holographic display with metasurface

Opto-Electronic Advances 2023年第8期6卷 8-16页

作者： Xin Li Qinmiao Chen Xue Zhang Ruizhe Zhao Shumin Xiao Yongtian Wang Lingling Huang Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China MoE Key Laboratory of Photoelectronic Imaging Technology and System and MIIT Key Laboratory of Photonics Information TechnologySchool of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemHarbin Institute of Technology(Shenzhen)Shenzhen 518055China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Color metasurface holograms are powerful and versatile platforms for modulating the amplitude,phase,polarization,and other properties of light at multiple operating ***,the current color metasurface holography can only realize static *** this study,we propose and demonstrate a multiplexing metasurface technique combined with multiwavelength code-division multiplexing(CDM)to realize dynamic *** code references are utilized to record information within a single metasurface and increase the information capacity and security for anticracks.A total of 48 monochrome images consisting of pure color characters and multilevel color video frames were reconstructed in dual polarization channels of the birefringent metasurface to exhibit high information density,and a video was displayed via sequential illumination of the corresponding code patterns to verify the ability of dynamic *** approach demonstrates significant application potential in optical data storage,optical encryption,multiwavelengthversatile diffractive optical elements,and stimulated emission depletion microscopy.

关键词： metasurface color holography dynamic display code division multiplexing

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High-speed low-noise InGaAs/InP PIN photodetectors on a Si platform achieved by oxygen plasma activation bonding

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Optics Letters 2025年第11期50卷 3549-3552页

作者： Wenhao Meng Xiaolong Jiang Menghui Guo Zhanren Wang Yiliang Diao Zhiwei Huang Jinrong Zhou Guanzhou Liu Xiaoying Zhang Shaoying Ke Key Laboratory of Light Field Manipulation and System Integration Applications in Fujian Province College of Physics and Information Engineering Minnan Normal University Zhangzhou 363000 China Xiamen Key Laboratory of Development and Application for Advanced Semiconductor Coating Technology School of Opto-electronic and Communication Engineering Xiamen University of Technology Xiamen 361024 China

In this paper, we report the hydrophilic wafer bonding of a 2 in. InP-based InGaAs/InP epitaxial film to a SiO 2 /Si substrate using oxygen plasma surface activation. The fabricated vertical Si-based InGaAs/InP PIN photodetectors exhibit an exceptionally low surface leakage current of 2.32 nA/cm and a bulk leakage current of 37.47 nA/cm 2 at −1 V. The device with a diameter of 13 μm achieves a remarkable 3 dB bandwidth of 30.453 GHz. Furthermore, the 70 μm diameter device has a response rate of 0.87 A/W and 0.58 A/W at 1370 nm and 1660 nm, respectively.

关键词： Absorption coefficient Atomic layer deposition Chemical vapor deposition Infrared detectors Photodetectors Thin films

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Hybrid bonding thermodynamic simulation of 3×3 array of Micro-LED fabricated based on flip-chip bonding 20

Hybrid bonding thermodynamic simulation of 3×3 array of Mic...

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20th China International Forum on Solid State Lighting and 9th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2023

作者： Li, Jianxin Zhou, Haojie Ji, Xiaoxiao Yin, Luqiao Zhang, Jianhua School of Microelectronics Shanghai University Shanghai200444 China Shanghai University Ministry of Education Key Laboratory of Advanced Display and System Applications Shanghai200072 China School of Materials Science and Engineering Shanghai University Shanghai200072 China School of Mechatronic Engineering and Automation Shanghai University Shanghai2000072 China

ISBN: (纸本)9798350385373

In this paper, ANSYS was used to perform a hybrid bonding thermodynamic simulation of Micro-LED fabricated based on flip-chip *** simulated the effects of different ILDs (interlayer dielectrics) and different diameters of In bumps on the mean stress of the bonding surface. The results show that filling BCB (Benzo cyclobutene)/PI (Polyimide)/SiO2 can significantly reduce the mean stress on the In bumps bonding area, among which, filling BCB/PI is better than filling SiO2. And when the diameter of the In bumps is 5 μm, the mean stress on the In bumps bonding area is lowest. For the mean stress on the bonding area of the ILDs, filling BCB/PI is also much better than filling SiO2. Changing the diameter of the In bumps has little effect on the mean stress of the ILDs bonding area filled with BCB/PI. As for the bonding area of the ILDs filled with SiO2, the mean stress increases as the diameter of the In bumps increases. This paper uses simulation experiments to study the mean stress on different bonding areas during the hybrid bonding process of preparing Micro-LED, which provides a theoretical basis for improving the bonding strength and yield of Micro-LED, and provides ideas for realizing the industrialization of Micro- LED. © 2023 IEEE.

关键词： Light emitting diodes

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Editing the Shape Morphing of Monocomponent Natural Polysaccharide Hydrogel Films

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Research 2021年第1期2021卷 835-846页

作者： Hao Hu Chao Huang Massimiliano Galluzzi Qiang Ye Rui Xiao Xuefeng Yu Xuemin Du Institute of Biomedical&Health Engineering Shenzhen Institute of Advanced Technology(SIAT)Chinese Academy of Sciences(CAS)Shenzhen 518035China Key Laboratory of Polymeric Materials and Application Technology of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of EducationSchool of ChemistryXiangtan UniversityXiangtan 411105China Institute of Advanced Materials Science and Engineering Shenzhen Institute of Advanced Technology(SIAT)Chinese Academy of Sciences(CAS)Shenzhen 518035China State Key Laboratory of Fluid Power&Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering MechanicsZhejiang UniversityHangzhou 310027China

Shape-morphing hydrogels can be widely used to develop artificial muscles,reconfigurable biodevices,and soft ***,conventional approaches for developing shape-morphing hydrogels highly rely on composite materials or complex manufacturing techniques,which limit their practical ***,we develop an unprecedented strategy to edit the shape morphing of monocomponent natural polysaccharide hydrogel films via integrating gradient cross-linking density and geometry *** to the synergistic effect,the shape morphing of chitosan(CS)hydrogel films with gradient cross-linking density can be facilely edited by changing their geometries(length-to-width ratios or thicknesses).Therefore,helix,short-side rolling,and longside rolling can be easily ***,various complex artificial 3D deformations such as artificial claw,horn,and flower can also be obtained by combining various flat CS hydrogel films with different geometries into one system,which can further demonstrate various shape transformations as triggered by *** work offers a simple strategy to construct a monocomponent hydrogel with geometry-directing programmable deformations,which provides universal insights into the design of shape-morphing polymers and will promote their applications in biodevices and soft robotics.

关键词： effect linking geometry

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Photoresponses Improvement of ZnO Thin Film Transistor by Using a HfO2-Al2O3Double Dielectrics 21

Photoresponses Improvement of ZnO Thin Film Transistor by Us...

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21st International Conference on Electronic Packaging Technology, ICEPT 2020

作者： Che, Bowen Zhang, Yongpeng DIng, Xingwei Key Laboratory of Advanced Display and System Application Ministry of Education School of Mechatronics and Automation Shanghai University Shanghai China

ISBN: (纸本)9781728168265

In this work, we have fabricated two bottom-gate zinc oxide thin film transistors (TFTs) with single-layer HfO2 and double-layer HfO2-Al2O3 dielectrics by atomic layer deposition (ALD). The TFT with HfO2-Al2O3 dielectric exhibited better electrical characteristics, such as a higher field effect mobility of 6.1 cm2/V•s and a lower subthreshold swing of 0.124 V/decade. At the same time, the optical properties is also improved significantly with larger responsivity (6.05 A/W) and UV-to-visible rejection ratio (6.05×104). These results are attributed to lower interface trap states between channel layer and dielectric layer by an Al2O3 interlayer. © 2020 IEEE.

关键词： Atomic layer deposition

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Transient Thermodynamic Simulation of Micro LED Array Bonding 20

Transient Thermodynamic Simulation of Micro LED Array Bondin...

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20th China International Forum on Solid State Lighting and 9th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2023

作者： Pan, Jinwen Zhou, Haojie Ji, Xiaoxiao Chen, Liang Yin, Luqiao Zhang, Jianhua School of Microelectronics Shanghai University Shanghai201800 China Shanghai University Ministry of Education Key Laboratory of Advanced Display and System Applications Shanghai200072 China School of Materials Science and Engineering Shanghai University Shanghai200072 China School of Mechatronic Engineering and Automation Shanghai University Shanghai200072 China

ISBN: (纸本)9798350385373

Micro LED display technology is considered to be the next generation of display technology and finds widespread applications in displays and visible light communication. key cooperation plays a crucial role in achieving electrical interconnections for Micro LED, which significantly impact their luminous quality and reliability. This study aims to analyze the stress-strain evolution during the bonding process of Micro LED arrays with cylindrical and spherical In bumps using COMSOL. The results demonstrate that the displacement of the bumps after bonding decreases by up to 97% compared to the displacement observed during the temperature-holding phase. Furthermore, the stresses during the temperature rise and fall stages approximately exhibit a linear relationship with temperature, and residual stresses exist after bonding. Additionally, residual stresses remain present after bonding. This study provides theoretical guidance for optimizing the bonding process of Micro LED and further exploration for the commercialization of Micro LED. © 2023 IEEE.

关键词： Light emitting diodes

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

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Frontiers of Mechanical Engineering 2021年第3期16卷 593-606页

作者： Kai LONG Xiaoyu YANG Nouman SAEED Ruohan TIAN Pin WEN Xuan WANG State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of ScienceWuhan University of TechnologyWuhan 430070China Department of Engineering Mechanics Hefei University of TechnologyHefei 230009China

This paper proposes a novel method for the continuum topology optimization of transient vibration problem with maximum dynamic response *** aggregated index in the form of an integral function is presented to cope with the maximum response constraint in the time *** density filter solid isotropic material with penalization method combined with threshold projection is *** sensitivities of the proposed index with respect to design variables are *** reduce computational cost,the second-order Amoldi reduction(SOAR)scheme is employed in transient *** of aggregate parameter,duration of loading period,interval time,and number of basis vectors in the SOAR scheme on the final designs are discussed through typical examples while unambiguous configuration can be *** comparison with the corresponding static response from the final designs,the optimized results clearly demonstrate that the transient effects cannot be ignored in structural topology optimization.

关键词： topology optimization solid isotropic material with penalization transient response aggregation function second-order Amoldi reduction

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Analysis and Research Based on Electrohydrodynamic Inkjet Printing

Analysis and Research Based on Electrohydrodynamic Inkjet Pr...

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

作者： Zhaoyu Chen Xinyi Wang Luqiao Yin Jianhua Zhang School of Microelectronics Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai China School of Microelectronics Shanghai Key Laboratory of Chips and Systems for Intelligent Connected Vehicle Shanghai University China

ISBN: (数字)9798331541149

ISBN: (纸本)9798331541156

Electrohydrodynamic (EHD) inkjet printing has the advantages of high precision and high automation, and its forming mechanism is complex. In this paper, the stress of Taylor cone and its influencing factors were analyzed systematically, and explored the influence of different process parameters on the printing process and effect. The results showed that the larger the voltage, the larger the droplet; the longer the cycle and voltage duration, the larger the droplet; the droplet size was linear with voltage and period. The influence of the printing height on the droplet size was very obvious. Excessive voltage made the printing process very unstable and inaccurate, and the droplet size gap was large and the droplet printing position deviated. Hope to provide some ideas for related research.

关键词： Automation Photonic band gap Voltage Ink jet printing Electrostatics Electrohydrodynamics Stress

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Facile assembly of flexible,stretchable and attachable symmetric microsupercapacitors with wide working voltage windows and favorable durability

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Microsystems & Nanoengineering 2024年第4期10卷 297-304页

作者： Xiangguang Han Xiaoyu Wu Libo Zhao Min Li Chen Jia Zhikang Li Jiaqi Xie Guoxi Luo Ping Yang Rabah Boukherroub Yurdanur Türker Mert UmutÖzkaynak Koray Bahadır Dönmez State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemXi’an Jiaotong UniversityXi’an 710049China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 264000China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’anShaanxi 710049China Chongqing Key Laboratory of Micro-Nano Systems and Intelligent Sensing Chongqing Academician WorkstationChongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of ThingsChongqing Technology and Business UniversityNan’an DistrictChongqing 400067China Univ.Lille CNRSUniv.Polytechnique Hauts-de-FranceUMR 8520-IEMNF-59000 LilleFrance Sabanci University Nanotechnology Research and Application Center(SUNUM) IstanbulTurkey Department of Materials Science and Engineering Istanbul Technical UniversityIstanbulTurkey

With the increasing development of intelligent robots and wearable electronics,the demand for high-performance flexible energy storage devices is drastically *** this study,flexible symmetric microsupercapacitors(MSCs)that could operate in a wide working voltage window were developed by combining laser-direct-writing graphene(LG)electrodes with a phosphoric acid-nonionic surfactant liquid crystal(PA-NI LC)gel *** increase the flexibility and enhance the conformal ability of the MSC devices to anisotropic surfaces,after the interdigitated LG formed on the polyimide(PI)film surface,the devices were further transferred onto a flexible,stretchable and transparent polydimethylsiloxane(PDMS)substrate;this substrate displayed favorable flexibility and mechanical characteristics in the bending ***,the electrochemical performances of the symmetric MSCs with various electrode widths(300,400,500 and 600μm)were *** findings revealed that symmetric MSC devices could operate in a large voltage range(0–1.5 V);additionally,the device with a 300μm electrode width(MSC-300)exhibited the largest areal capacitance of 2.3 mF cm^(−2)at 0.07 mA cm^(−2)and an areal(volumetric)energy density of 0.72μWh cm−2(0.36 mWh cm^(−3))at 55.07μWcm−2(27.54mWcm−3),along with favorable mechanical and cycling *** charging for~20 s,two MSC-300 devices connected in series could supply energy to a calculator to operate for~130 s,showing its practical application potential as an energy storage ***,the device displayed favorable reversibility,stability and *** 12 months of aging in air at room temperature,its electrochemical performance was not altered,and after charging-discharging measurements for 5000 cycles at 0.07 mA cm^(−2),~93.6%of the areal capacitance was still retained;these results demonstrated its practical long-term application potential as an energy storage device.

关键词： cycling durability electrode

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Light Field Reconstruction in Angular Domain with Multi-Models Fusion Through Representation Alternate Convolution

SSRN

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SSRN 2022年

作者： Cao, Fengyin Huang, Xinpeng An, Ping Yang, Chao Shanghai Institute for Advanced Communication and Data Science School of Communication and Information Engineering Shanghai University Shanghai200444 China Key Laboratory for Advanced Display and System Application Ministry of Education Shanghai200072 China

To alleviate the spatial-angular trade-off in light fields (LFs), LF super-resolution (SR) has been studied. Most of current methods only concern limited relations in LFs, which leads to the insufficient exploitation of the multi-dimensional information. To address this issue, we present a multi-models framework for LFSR in this paper. Models which embody LF from distinct aspects are integrated to constitute the framework. Therefore, the number and the arrangement of these models and the depth of each model determine the framework’s performance, we make the comprehensive analysis on these factors to reach the best result. However, models in the framework are isolated to each other as the unique inputs are required. To tackle this issue, the representation alternate convolution (RAC) is introduced. As the fusion is conducted through the RAC, the multi-dimensional information in LFs is fully exploited. Experimental results demonstrate that our method achieves superior performance against state-of-the-arts techniques. © 2022, The Authors. All rights reserved.

关键词： Convolution

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