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International Conference on (ICEPT) Electronic Packaging Technology

作者： Weihong Zhang Quan Zhou Honghao Tang Xu Liu Huaiyu Ye Sau Wee Koh Guoqi zhang Shenzhen Institute of Wide-bandgap Semiconductors Shenzhen China Key Laboratory of Optoelectronic of China College of Optoelectronic Engineering Technology & Systems Education Ministry Chongqing University Shenzhen China Shenzhen Institute of Wide-bandgap Semiconductors School of Microelectronics and Engineering Research Center of Integrated Circuits for Next-Generation Communications Ministry of Education Southern University of Science and Technology Shenzhen China Department of Microelectronics Delft University of Technology Shenzhen China Huawei Technology Shenzhen China Department of Microelectronics Delft University of Technology Delft The Netherlands

ISBN: (数字)9781728168265

ISBN: (纸本)9781728168272

As an outstanding corrosion inhibitor for copper, the adsorption behavior of benzotriazole on copper nano cluster has been investigated and compared with copper (111), (100) and (110) surfaces by means of density functional theory (DFT) calculations. Calculations reveal that benzotriazole has chemical adsorption on different copper surfaces and copper nano cluster when its N2-N3 bond is placed down on them. Also, the adsorption energy and closest interatomic distance show strong dependence on the surface structure, which indicates its ability to passivate the reactive under-coordinated surface sites. Relatively strong chemical bond between the copper cluster and the adsorbate is found to form. The chemisorption mechanism and the local structure of benzotriazole on copper surfaces and nano cluster are also discussed and presented.

关键词： Adsorption Copper Chemicals Absorption Surface structures Charge transfer Discrete Fourier transforms

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-growth orientation dependence of Ga2O3 nanowires on Cu3As seeds via vapor-solid-solid mechanism

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Journal of Alloys and Compounds 2021年 864卷 158786-158786页

作者： Wang, Hang Wang, Anqi Wang, Ying Yang, Zaixing Yang, Jun Han, Ning Chen, Yunfa School of Metallurgical Engineering Xi'an University of Architecture and Technology Xi'an710055 China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China Department of Physics School of Science Beijing Jiaotong University Beijing100044 China Center of Nanoelectronics and School of Microelectronics Shandong University Jinan250100 China

To accurately control semiconductor nanowires’ (NW) physical characteristics defining electronic, optical and sensor applications, it is necessary to understand their potential growth mechanism. In this study, the Ga2O3 NW growth orientation is found to be dependent on their Cu3As catalyst structure via vapor-solid-solid (VSS) mechanism. The Ga2O3 NWs are synthesized by vapor transport method at 700 °C below the Cu3As alloy eutectic temperature, which forms a solid structure on top of the NWs. The NWs have relatively uniform diameter of 40–60 nm and prefer to grow alongdirection. Energy-dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscope (HRTEM) data provide strong evidence that the harvested Ga2O3 NWs are epitaxially grown from Cu3As-based (cubic and hexagonal) catalyst seeds. And Ga2O3{110} |Cubic Cu3As {210}, Ga2O3{110} |Cubic Cu3As {110} and Ga2O3 {110} | hexagonal Cu3As {110} have relatively low mismatch compared to other interface lattice planes, providing a key insight into the growth process according to the VSS mechanism. The thermodynamics driven composition changes in the growth process are elaborated in detail. © 2021 Elsevier B.V.

关键词： Nanowires

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Tellurium nanowire retinal nanoprosthesis improves vision in models of blindness

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Science 2025年第6751期388卷

作者： Shuiyuan Wang Chengyong Jiang Yiye Yu Zhenhan Zhang Ruge Quhe Ruyi Yang Yufei Tian Xindong Chen Wenqiang Fan Yinge Niu Biao Yan Chunhui Jiang Yang Wang Zhen Wang Chunsen Liu Weida Hu Jiayi Zhang Peng Zhou State Key Laboratory of Integrated Chips and Systems (SKLICS) College of Integrated Circuits and Micro-Nano Electronics School of Microelectronics State Key Laboratory of Brain Function and Disorders MOE Frontiers Center for Brain Science Institutes of Brain Science Department of Ophthalmology and Vision Science Eye and ENT Hospital Fudan University Shanghai China. Shaoxin Laboratory Shaoxing Zhejiang China. State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai China. School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore. State Key Laboratory of Information Photonics and Optical Communications and School of Science Beijing University of Posts and Telecommunications Beijing China.

Present vision restoration technologies have substantial constraints that limit their application in the clinical setting. In this work, we fabricated a subretinal nanoprosthesis using tellurium nanowire networks (TeNWNs) that converts light of both the visible and near-infrared–II spectra into electrical signals. The broad-spectrum coverage is made possible by a combination of narrow bandgaps, strong absorption, and engineered asymmetries. Implanted into blind mice, the TeNWNs restored pupillary reflexes and enabled visually cued learning under visible and near-infrared 1550-nanometer light. In nonhuman primates, TeNWNs elicited robust retina-derived neural responses, confirming biocompatibility and feasibility. By restoring lost photosensitivity and extending vision to near-infrared, this nanoprosthesis offers a promising approach for restoring vision.

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A 400 MHz, 8-Bit, 1.75-ps Resolution Pipelined-Two-Step Time-to-Digital Converter with Dynamic Time Amplification

A 400 MHz, 8-Bit, 1.75-ps Resolution Pipelined-Two-Step Time...

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IEEE International Symposium on circuits and systems (ISCAS)

作者： Yuting Tu Rongjin Xu Dawei Ye Liangjian Lyu C.-J. Richard Shi State Key Laboratory of ASIC and System Fudan University Shanghai 201203 China Institute of Brain-inspired Circuits and Systems (iBiCAS) Fudan University Shanghai 201203 China Department of Electrical and Computer Engineering University of Washington Seattle 98195 USA

ISBN: (数字)9781728133201

ISBN: (纸本)9781728133218

This work proposes a high-speed pipelined-two-step time-to-digital converter (TDC) with a dynamic time amplification (DTA) to improve the resolution at low power. The key element of this TDC is the DTA. It samples the residual time errors as voltages held in the MOM capacitors and discharges them to generate the amplified time difference. Thanks to the dynamic time-voltage-time conversion, the DTA realizes high linearity and power efficiency, and can be employed to build a pipeline TDC architecture with high sampling frequency because of its sample and hold operation. Moreover, the DTA maintains constant gain, so only a one-time forground calibration for gain mismatch is required in this TDC. Simulations show that the TDC designed in 65 nm CMOS achieves 8-bit, 1.75 ps of time resolution, and 1 LSB INL and 1.6 LSB DNL with one-time foreground calibration at 400 MHz sampling frequency while just consuming 726 μW power, which corresponds to 18.45 fJ/Conv. FoM.

关键词： Delays Calibration Inverters Capacitors Linearity Tin

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Optomechanical dissipative solitons (vol 600, pg 75, 2021)

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NATURE 2022年第7896期602卷 E24-E24页

作者： Zhang, Jing Peng, Bo Kim, Seunghwi Monifi, Faraz Jiang, Xuefeng Li, Yihang Yu, Peng Liu, Lianqing Liu, Yu-xi Alu, Andrea Yang, Lan Department of Electrical and Systems Engineering Washington University St. Louis MO USA Department of Automation Tsinghua University Beijing P. R. China Photonics Initiative Advanced Science Research Center City University of New York New York NY USA Physics Program Graduate Center City University of New York New York NY USA State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang P. R. China Institute of Microelectronics Tsinghua University Beijing P. R. China

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Harnessing Graphene Plasmons by Accessing the Retardation Regime

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ACS applied materials & interfaces 2025年第22期17卷 2025 May 22页

作者： Jiasheng Zhang Qiaoxia Xing Tuoyu Zhao Shunjia Wang Junwei Ma Chong Wang Jiajun Wang Yuangang Xie Shenyang Huang Chaoyu Song Quan Wan Lei Shi Zhensheng Tao Wu Shi Xuesong Li Lei Zhou Hugen Yan State Key Laboratory of Surface Physics Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) Shanghai Key Laboratory of Metasurfaces for Light Manipulation and Department of Physics Fudan University Shanghai 200433 China. Inner Mongolia Key Laboratory of Microscale Physics and Atom Innovation & School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China. State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai 200433 China. Zhangjiang Fudan International Innovation Center Fudan University Shanghai 201210 China. Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China. Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing 100081 China. School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics) University of Electronic Science and Technology of China Chengdu 611731 China. Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen 518110 China.

Plasmons in graphene are highly tunable, mainly by leveraging the carrier density and Drude scattering. Here, we introduce another scheme, i.e., accessing the retardation regime (originated from the finite speed of light), to engineer the lifetime and dispersion of plasmons in graphene in the terahertz regime. We find that the retardation regime can be approached by reducing plasmon momentum in artificially stacked multilayer graphene systems with large Drude weight, and this can significantly increase the plasmon lifetime. In addition, an explicit theoretical model along with finite-element simulation was given, consistent with the experimental findings. Our work opens another avenue to manipulate terahertz plasmons in graphene.

关键词： Drude weight graphene plasmon retardation effects terahertz

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Erratum to: Large circuit models: opportunities and challenges

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SCIENCE CHINA Information Sciences 2024年第11期67卷 1-1页

作者： Lei CHEN Yiqi CHEN Zhufei CHU Wenji FANG Tsung-Yi HO Ru HUANG Yu HUANG Sadaf KHAN Min LI Xingquan LI Yu LI Yun LIANG Jinwei LIU Yi LIU Yibo LIN Guojie LUO Hongyang PAN Zhengyuan SHI Guangyu SUN Dimitrios TSARAS Runsheng WANG Ziyi WANG Xinming WEI Zhiyao XIE Qiang XU Chenhao XUE Junchi YAN Jun YANG Bei YU Mingxuan YUAN Evangeline F.Y. YOUNG Xuan ZENG Haoyi ZHANG Zuodong ZHANG Yuxiang ZHAO Hui-Ling ZHEN Ziyang ZHENG Binwu ZHU Keren ZHU Sunan ZOU Huawei Noah's Ark Lab Hong Kong 999077 China School of Integrated Circuits Peking University Beijing 100871 China Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo 315211 China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong 999077 China Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong 999077 China School of Integrated Circuits Southeast University Nanjing 210096 China Huawei HiSilicon Shenzhen 518129 China Peng Cheng Laboratory Shenzhen 518052 China School of Computer Science Peking University Beijing 100871 China School of Microelectronics State Key Laboratory of Integrated Chips and System Fudan University Shanghai 200433 China School of Artificial Intelligence Shanghai Jiao Tong University Shanghai 200240 China

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Deep Learning on Preoperative Radiographs for Clinical Success Prediction after Surgery for Cervical Degenerative Disease

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Brain and Spine 2023年 3卷 101842-101842页

作者： Goedmakers, Caroline Pereboom, Leonie de Leeuw den Bouter, Merel Remis, Rob Staring, Marius Vleggeert-Lankamp, Carmen Leiden University Medical Center (LUMC) department of Neurosurgery Leiden Netherlands Faculty of Mechanical Maritime and Materials Engineering (3mE) Delft University of Technology Delft The Netherlands Delft Netherlands Delft Institute of Applied Mathematics Department of Numerical Analysis Delft University of Technology Delft The Netherlands Delft Netherlands Circuits and Systems Group Microelectronics Department Delft University of Technology Delft The Netherlands Delft Netherlands Division of Image Processing of the Leiden University Medical Center Leiden The Netherlands Leiden Netherlands

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Advancing PoC Devices for Early Disease Detection using Graphene-based Sensors 3

Advancing PoC Devices for Early Disease Detection using Grap...

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3rd International Conference on engineering for Sustainable World, ICESW 2019

作者： Oshin, Oluwadamilola Kireev, Dmitry Akinwande, Deji Adetiba, Emmanuel Idachaba, Francis Atayero, Aderemi Electrical and Information Engineering Department Covenant University Ota Ogun State Nigeria Department of Electrical and Computer Engineering University of Texas at Austin United States Microelectronics Research Center University of Texas at Austin United States HRA Institute for Systems Science Durban University of Technology Durban South Africa

Early detection of diseases is key to better disease management and higher survival rates. It aims at discovering conditions that have already produced biochemical changes in body fluids, but have not yet reached a stage of apparent physical symptoms or medical emergency. Therefore, early disease detection relies majorly on biochemical testing of biological fluids such as serum, in the body. The laboratories for these tests require biochemical-based instrumentations that are bulky and not commonly available especially in developing countries. Moreover, the tests are expensive and require trained personnel to conduct and interpret results. On the other hand, Lab-on-a-Chip (LOC) biosensors have a potential to miniaturize the entire biochemical/laboratory methods of diagnostics into versatile, inexpensive and portable devices with great potential for low-cost Point-of-Care (POC) applications. They are capable of providing accurate and precise information on the measured health indices for sub-clinical level of diseases. Nanotechnology-inspired biosensors have further advantages of low limit of detection (required for early diagnosis), real-time analysis and lesser sample volume requirement. Of all other nanomaterials, graphene is said to be the most promising, suitable for biosensing due to its biocompatibility and consistent signal amplification even under the conditions of harsh ionic solutions found in the human body. This paper reviews the potentials, fundamental concepts and related works in using Graphene-based Field Effect Transistors (GFETs) as biosensors for early disease diagnosis. This paper also highlights a low-cost patterning mechanism for preparing SiO2/Si substrate for metal deposition (of the source and drain electrodes of FETs). © 2019 IOP Publishing Ltd.

关键词： Graphene

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Structural disorder by octahedral tilting in inorganic halide perovskites: New insight with Bayesian optimization

arXiv

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arXiv 2023年

作者： Li, Jingrui Pan, Fang Zhang, Guo-Xu Liu, Zenghui Dong, Hua Wang, Dawei Jiang, Zhuangde Ren, Wei Ye, Zuo-Guang Todorović, Milica Rinke, Patrick Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education International Center for Dielectric Research School of Electronic Science and Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi’an Jiaotong University Xi’an710049 China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Key Laboratory for Physical Electronics and Devices of the Ministry of Education Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and Engineering Xi’an Jiaotong University Xi’an710049 China School of Microelectronics Key Lab of Micro-Nano Electronics and System Integration of Xi’an City Xi’an Jiaotong University Xi’an710049 China State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi’an Jiaotong University Xi’an710049 China Department of Chemistry and 4D LABS Simon Fraser University British Columbia BurnabyV5A 1S6 Canada Department of Mechanical and Materials Engineering University of Turku TurkuFI-20014 Finland Department of Applied Physics Aalto University AALTO P.O.Box 11100 FI-00076 Finland

Structural disorder is common in metal-halide perovskites and important for understanding the functional properties of these materials. First-principles methods can address structure variation on the atomistic scale, but they are often limited by the lack of structure-sampling schemes required to characterize the disorder. In this work, structural disorder in the benchmark inorganic halide perovskites CsPbI3 and CsPbBr3 is computationally studied in terms of the three octahedral-tilting angles. The consequent variation in energetics and properties are described by three-dimensional potential-energy surfaces (PESs) and property landscapes, delivered by Bayesian Optimization Structure Search method with integrated density-functional-theory (DFT) calculations. The rapid convergence of the PES with about 200 DFT data points in three-dimensional searches demonstrates the power of active learning and strategic sampling with Bayesian optimization. Further analysis indicates that disorder grows with increasing temperature, and reveals that the materials band gap at finite temperatures is a statistical mean over disordered structures. © 2023, CC BY.

关键词： Lead compounds

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