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作者： Gurvitch, Michael Luryi, Serge Polyakov, Aleksandr Shabalov, Alexander Department of Physics and Astronomy State University of New York Stony Brook NY 11794 United States Stony Brook United States Department of Electrical and Computer Engineering State University of New York Stony Brook NY 11794 United States New York State Center for Advanced Sensor Technology State University of New York Stony Brook NY 11794 United States

Hysteresis observed in the resistive semiconductorto- metal phase transition in VO2 causes problems in bolometric readout, and thus is an obstacle in utilizing this strong phase transition in bolometric sensor applications. It is possible to avoid the unwanted hysteresis when operating in limited temperature ranges within the hysteresis loop of VO2. Nonhysteretic branches (NHBs) traced in such limited temperature intervals turned out to have much higher temperature coefficient of resistance (TCR) than VO2 at room temperature: while TCR at 25 ?C in VO2 is close to 3%, peak TCR values in NHB-s reach 6% in VO2 films on Si/SiOi2 substrates and 21% in films on crystalline sapphire substrates. At the same time, the nanoscopic-scale mixture of semiconducting and metallic phases in VO2 within its hysteresis loop provides forpartially shunted low resistivity, thus creating an unprecedented combination of record high semiconducting TCR and metal-like low resistance. This combination may benefit the uncooled ocal plane array microbolometer IR visualization technology.

关键词： Hysteresis

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强健超弹的蜘蛛网状聚酰亚胺纤维基导电复合气凝胶用于极端温度下的线性压力传感器

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Science China Materials 2023年第7期66卷 2829-2842页

作者：杨文科刘虎杜厚义张旻悦王春枫尹锐潘曹峰刘春太申长雨 Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China China Astronaut Research and Training Center Beijing 100094China

压力传感器是人工触觉感应的基石.尽管人们对高性能压力传感器进行了广泛的研究,但解决传感器的高灵敏度、宽线性响应范围和宽工作温度范围仍然面临巨大挑战.在此,我们创新性地应用三乙胺实现了疏水聚酰亚胺纤维(PIFs)在碳纳米管(CNT)... 详细信息

压力传感器是人工触觉感应的基石.尽管人们对高性能压力传感器进行了广泛的研究,但解决传感器的高灵敏度、宽线性响应范围和宽工作温度范围仍然面临巨大挑战.在此,我们创新性地应用三乙胺实现了疏水聚酰亚胺纤维(PIFs)在碳纳米管(CNT)水溶液中的均匀分散,同时纤维的结构不会受到破坏,并利用冻干和热酰亚胺化技术制备了强健超弹的蜘蛛网状(PIF/CNT)导电复合气凝胶.该气凝胶作为压力传感器具有宽线性感应范围(0.01-53.34 kPa)、超低检测限(10 Pa)、高灵敏度(0.507 kPa^(-1))、快速响应/恢复时间(85/80 ms)、稳定的快速压缩响应(500 mm min^(-1))和优异的抗循环疲劳能力(5000次)等优异的传感性能.有限元分析表明,多级纤维网络有利于相邻的导电纤维之间的接触面积在外部压力下有明显的线性变化,使之表现出优异的线性传感性能.该传感器可用于人体生理和运动信号检测、电子皮肤和智能控制,且在极端温度(-100-300℃)下表现出出色的传感稳定性和热绝缘性,可用于极端太空环境下太空服和月球/火星栖息地充气结构的传感单元.本工作为开发下一代线性压力传感器提供了一个简单有效的方法.

关键词： polyimide fibre superelastic aerogel pressure sensor linear sensing environmental tolerance

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Mapping the antiparallel aligned domain rotation by microwave excitation

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Chinese Physics B 2024年第9期33卷 599-605页

作者： Jing Zhang Yuanzhi Cui Xiaoyu Wang Chuang Wang Mengchen Liu Jie Xu Kai Li Yunhe Zhao Zhenyan Lu Lining Pan Chendong Jin Qingfang Liu Jianbo Wang Derang Cao College of Physics Qingdao UniversityQingdao 266071China National Demonstration Center for Experimental Applied Physics Education Qingdao UniversityQingdao 266071China SKLSM Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin 150040China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and ElectronicsHunan University of Science and TechnologyXiangtan 411201China CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Optic-Electronic Information and Materials of Hebei Province Research Center for Computational PhysicsCollege of Physics Science and TechnologyHebei UniversityBaoding 071002China Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education Lanzhou UniversityLanzhou 730000China Key Laboratory of Special Functional Materials and Structural Design Ministry of EducationLanzhou UniversityLanzhou 730000China

The evolution process of magnetic domains in response to external fields is crucial for the modern understanding and application of *** this study,we investigated the domain rotation in stripe domain films of varying thicknesses by examining their response to microwave excitation in four different *** resonance spectra indicate that the rotation field of stripe domain film under an applied magnetic field approaches the field where the resonance mode of sample *** saturation field of the stripe domain film corresponds to the field where the resonance mode disappears when measured in the stripe direction parallel to the microwave magnetic *** results are reproducible and consistent with micromagnetic simulations,providing additional approaches and techniques for comprehending the microscopic mechanisms of magnetic domains and characterizing their rotation.

关键词： stripe domain magnetic film microwave excitation micromagnetic simulation

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Field enhanced photocatalytic disinfection

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Science Bulletin 2022年第8期67卷 779-783页

作者： Baoying Dai Hongqing Feng Zhou Li Yannan Xie State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

An enormous number and tremendous diversity of microorganisms(such as bacteria and viruses)are surrounding us in our daily life,most of which we can live together in harmony under common circumstance.

关键词：场增强光催化灭菌 of

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Stretchable graded multichannel self-powered respiratory sensor inspired by shark gill

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Fundamental Research 2022年第4期2卷 619-628页

作者： Yang Zou Yansong Gai Puchuan Tan Dongjie Jiang Xuecheng Qu Jiangtao Xue Han Ouyang Bojing Shi Linlin Li Dan Luo Yulin Deng Zhou Li Zhong Lin Wang School of Life Science Institute of Enginering MedicinBejing Institute of TechnologyBejing 10oo81China CAs Center for Excellence in Nanoscience Bejing Key Laboratory of Micro-Nano Energy and SensorBejing Instute of Nanoenergy and NanosystemsChinese Acadermy of SciencesBeijing 101400China Center on Nanoenergy Research School of Chemistry and Chemical Engineering School of Physical Science and TechnologyGuangxi UniversiyNanning 53004China Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry Bejing Advanced Inovation Centre for Biomedical Engieering School of Biological Science and Medical EngineringBeihang UniversityBejing 100083China School of Nanoscience and Technology Universiy of Chinese Academy of ScienesBejing 100049China

Respiratory sensing provides a simple,non-invasive,and efficient way for medical diagnosis and health monitoring,but it relies on sensors that are conformal,accurate,durable,and sustainable ***,a stretchgll structure can convert transverse elastic deformation into longitudinal elastic deformation during ***,multichannel respiratory sensor inspired by the structure of shark gill cleftis *** bionic shark Combining the optimized bionic shark gll structure with the piezoelectric and the triboelectric effect,the bionic shark gill respiratory sensor(BSG-RS)can produce a graded electrical response to different tensile *** on this feature,BSG-RS can simultaneously monitor the breathing rate and breathing depth of the human body accurately,and realize the effective recognition of the different human body's breathing state under the supporting software,With good stretchability,wearabilit,acuracy,and long-term stability(50,0oo cycles),BSG-RS is expected to be applied as self-powered smart wearables for mobile medical diagnostic analysis in the future.

关键词： Bionic Sharkgill Graded Multichannel Respiratory sensing

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Fast prototype and rapid construction of three-dimensional and multi-scaled pitcher for controlled drainage by systematic biomimicry

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International Journal of Extreme Manufacturing 2024年第3期6卷 489-503页

作者： Tao Shen Ning Li Shijie Liu Cunlong Yu Chengqi Zhang Kang Yang Xingfei Li Ruochen Fang Lei Jiang Zhichao Dong Research Institute for Frontier Science Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education BeijingSchool of ChemistryBeihang UniversityBeijing 100191People’s Republic of China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083People’s Republic of China School of Future Technology&School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 101407People’s Republic of China School of Chemistry and Materials Science University of Science and Technology of China230026 HefeiAnhuiPeople’s Republic of China Suzhou Institute for Advanced Research University of Science and Technology of China215123 SuzhouJiangsuPeople’s Republic of China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University300072 TianjinPeople’s Republic of China

Biomimetic materials that use natural wisdom to solve practical problems are developing *** trend for systematic biomimicry is towards in-situ characterization of naturalcreatures with high spatial ***,rapid reconstruction of digital twin models with the same complex features as the prototype is ***,it faces bottlenecks and limits in fast characterization and fabrication,precise parameter optimization,geometricdeviations control,and quality *** solve these challenges,here,we demonstrate astate-of-the-art method taking advantage of micro-computed tomography and three-dimensional printing for the fast characterization of the pitcher plant Nepenthes x ventrata and fabrication of its biomimetic model to obtain a superior drainage controller with multiscale structures withprecise surface morphology optimization and geometric deviation ***-rupture-based drainage dynamic and mechanisms are characterized by x-ray and high-speed videography,which determines the crucial structures for unique *** the optimized artificial pitchers are further developed into sustained drainage devices with novel applications,such as detection,reaction,and smoke control.

关键词： systematic biomimicry biomimetic materials Micro-CT drainage digital twin

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A Real-Time Lightweight Method to Detect the Sixteen Brushing Regions Based on a 9-axis Inertial sensor and Random Forest Classifier 2021

A Real-Time Lightweight Method to Detect the Sixteen Brushin...

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2021 The 9th International Conference on Information technology: IoT and Smart City

作者： Haicui Li Lei Jing Feng Liu The Graduate School of Computer Science The University of Aizu Japan Research Center for Advanced Information Science and Technology (CAIST) The University of Aizu Japan The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province Yanshan University China

ISBN: (纸本)9781450384971

In this research, we propose a real-time lightweight method to detect the tooth-brushing regions. The system takes a sensor node as input device and a 2D dentition as output interface. Specifically, the sensor node can be attached onto the handle of a toothbrush to get the 3D Euler angles, which are used as the features for training Random Forester Classifier (RFC) Model. Moreover, the predicted brushing region will be displayed on the dentition interface in real-time. All teeth are divided into 16 regions to evaluate the detection accuracy. User-dependent offline experiment shows that the RFC-based automatic threshold definition method achieves 97.6% validation accuracy, which is about 35% higher than the manual threshold definition method. For the RFC-based method, the online real-time accuracy is 74.0%, which is about 23.6% less than the offline result.

关键词： machine learning toothbrushing regions Random Forest Classifier 9-axis inertial sensor

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Early and Sensitive Detection of Pathogens for Public Health and Biosafety:An Example of Surveillance and Genotyping of SARS-CoV-2 in Sewage Water by Cas12a-Facilitated Portable Plasmonic Biosensor

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Research 2024年第2期2023卷 259-272页

作者： Tianzhong Li Yuzhi Chen Zhi Chen Yuan Hao Minyi Liang Yingxia Liu Guanyong Ou Huanian Zhang Yuxuan Tang Yabing Hao Swelm Wageh Omar AAl-Hartomy Abul Kalam Bin Zhang Xin Shi Xuejin Li Han Zhang College of Physics and Optoelectronic Engineering Institute of Translational MedicineDepartment of OtolaryngologyShenzhen Second People's HospitalFirst Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Sensor Technology Shenzhen 518060China The Sixth Affiliated Hospital of Guangzhou Medical University Qingyuan People's HospitalQingyuan 511518China Shenzhen Key Laboratory of Pathogen and Immunity National Clinical Research Center for Infectious DiseaseState Key Discipline of Infectious DiseaseShenzhen Third People's HospitalSecond Hospital Affiliated to Southern University of Science and TechnologyShenzhen 518112China School of Medicine Southern University of Science and TechnologyShenzhen 518055China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255049China Department of Physics Faculty of ScienceKing Abdulaziz University Jeddah 21589Saudi Arabia Research Center for Advanced Materials Science(RCAMS) King Khalid UniversityP.0.Box 9004Abha 61413Saudi Arabia Department of Chemistry College of ScienceKing Khalid UniversityP.0.Box9004Abha 61413 Saudi Arabia Health Sciences Institute China Medical UniversityShenyang 110000China The Chinese University of Hong Kong Shenzhen 518060China

Infectious diseases severely threaten public health and global *** addition to transmission through the air,pathogenic microorganisms have also been detected in environmental liquid samples,such as sewage *** biochemical detection methodologies are time-consuming and cost-ineffective,and their detection limits hinder early *** the present study,ultrafine plasmonic fiber probes with a diameter of 125μm are fabricated for clustered regularly interspaced short palindromic repeats/CRISPR-associated protein(CRISPR/Cas)-12a-mediated sensing of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Single-stranded DNA exposed on the fiber surface is trans-cleaved by the Cas12a enzyme to release gold nanoparticles that are immobilized onto the fiber surface,causing a sharp reduction in the surface plasmon resonance(SPR)*** proposed fiber probe is virus-specific with the limit of detection of~2,300 copies/ml,and genomic copy numbers can be reflected as shifts in wavelengths.A total of 21 sewage water samples have been examined,and the data obtained are consistent with those of quantitative polymerase chain reaction(qPCR).In addition,the Omicron variant and its mutation sites have been fast detected using S gene-specific *** study provides an accurate and convenient approach for the real-time surveillance of microbial contamination in sewage water.

关键词： fiber consuming hinder

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Non-Volatile Resistive Switching in PtSe2-Based Crosspoint Memristors

Non-Volatile Resistive Switching in PtSe2-Based Crosspoint M...

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Device Research Conference

作者： Dennis Braun Sebastian Lukas Lukas Vö lkel Oliver Hartwig Maximilian Prechtl Melkamu Belete Satender Kataria Thorsten Wahlbrink Alwin Daus Georg S. Duesberg Max C. Lemme Chair of Electronic Devices RWTH Aachen University Aachen Germany Faculty of Electrical Engineering and Information Technology (EIT 2) and Center for Integrated Sensor Systems Institute of Physics University of the Bundeswehr Munich Neubiberg Germany AMO GmbH Advanced Microelectronic Center Aachen Aachen Germany

ISBN: (数字)9781665498838

ISBN: (纸本)9781665498845

Two-dimensional (2D) materials such as transition metal dichalcogenides (TMDCs) have gained attention for neuromorphic computing applications due to their resistive switching (RS) behavior [1], [2]. Among TMDCs, platinum diselenide (PtSe 2 ) stands out because it can be grown at complementary metal-oxide-semiconductor (CMOS) back-end-of-line (BEOL) compatible temperatures [3], [4] and it has shown excellent long-term stability [5]. However, its potential for RS remains largely unexplored with only preliminary proof-of-concept characteristics presented in a multilayer PtSe 2 device with Au electrodes [6]. Here, we present the first detailed study on forming free RS in PtSe 2 -based crosspoint (CP) memristors using CMOS-compatible electrodes. We find remarkably low switching fields (0.08 V /nm) likely related to our choice of electrode materials and excellent retention for at least several days.

关键词： Electrodes Gold Temperature Neuromorphic engineering Two dimensional displays Platinum Memristors

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Pluggable multitask diffractive neural networks based on cascaded metasurfaces

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Opto-Electronic Advances 2024年第2期7卷 23-31页

作者： Cong He Dan Zhao Fei Fan Hongqiang Zhou Xin Li Yao Li Junjie Li Fei Dong Yin-Xiao Miao Yongtian Wang Lingling Huang Beijing Engineering Research Center of Mixed Reality and Advanced Display Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of ChinaSchool of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Institute of Modern Optics Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network TechnologyNankai UniversityTianjin 300350China Department of Physics and Optoelectronics Faculty of ScienceBeijing University of TechnologyBeijing 100124China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100191China Beijing Aerospace Institute for Metrology and Measurement Technology Beijing 100076China

Optical neural networks have significant advantages in terms of power consumption,parallelism,and high computing speed,which has intrigued extensive attention in both academic and engineering *** has been considered as one of the powerful tools in promoting the fields of imaging processing and object ***,the existing optical system architecture cannot be reconstructed to the realization of multi-functional artificial intelligence systems *** push the development of this issue,we propose the pluggable diffractive neural networks(P-DNN),a general paradigm resorting to the cascaded metasurfaces,which can be applied to recognize various tasks by switching internal *** the proof-of-principle,the recognition functions of six types of handwritten digits and six types of fashions are numerical simulated and experimental demonstrated at near-infrared ***,the proposed paradigm not only improves the flexibility of the optical neural networks but paves the new route for achieving high-speed,low-power and versatile artificial intelligence systems.

关键词： optical neural networks diffractive deep neural networks cascaded metasurfaces

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