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Journal of Materiomics 2024年第4期10卷 928-936页

作者： Zhiyi zhang bicheng Zhou Lan Jia Wenwen Yu Qiang Zheng College of Materials Science and engineering Taiyuan University of TechnologyTaiyuan030024China Shanxi-Zheda Institute of Advanced Materials and Chemical engineering Taiyuan030000China rd Research Institute of china electronics Technology Group Corporation Taiyuan030032China Department of Polymer Science&engineering Zhejiang UniversityHangzhou310027China

With the development of electronic information science and technology,electromagnetic information security and electromagnetic pollution become more and more *** wave absorption(EMWA)rubber based on the absorbent of carbon with low density and good corrosion resistance is a kind of good EMWA materials for solving electromagnetic information security and electromagnetic *** this article,three-dimensional network structure carbon nanofiber aerogels(3DNSCAs)are prepared by vacuum annealing of three-dimensional network structure agarose/zinc acetate obtained by freeze-drying of agarose/zinc acetate *** EMWA rubber composites with 2.2.(in mass)3DNSCAs have almost the same density as silicone rubber(PDMS),and the dispersity of 3DNSCAs in PDMS is studied by rheological *** effective absorption bandwidth(EAB,frequency for reflection loss2.mm thick PDMS/C-800 is 4 GHz,and the minimum value of reflection loss(RL_(min))is−52.dB with the thickness of 3.5 *** PDMS/C-1000 with the thickness of 3.5 mm has an EAB up to 4.8 *** cross section(RCS)reduction of PDMS/C-800 can achieve 2. dB⋅m2.at the frequency of 6 GHz.

关键词： Electromagnetic wave absorption Rubber composite Carbon aerogel Rheological behavior Power loss density

Robust H∞ Control for Varying Sampling Networked Control Systems

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Robust H∞ Control for Varying Sampling Networked Control Sy...

Enhancing light yield of Tb^(3+)-doped fluoride nanoscintillator with restricted positive hysteresis for low-dose high-resolution X-ray imaging

2.10 Chinese Control and Decision Conference

作者： bicheng lei~1,shiqing zhang~2.1,2.College of Physics and {2. engineering,taizhou university,taizhou,zhejiang province,china,318000,

＜正＞For the robustness of varying sampling networked control system,a designed method of varying sampling H∞controller is *** on the character of the system,the system is modeled as switching *** study utilizes Lyapunov function to demonstrate the system stability and H∞performance,then presents sufficient conditions in which the H∞performance should be satisfied via LMI（linear matrix inequality）.Furthermore,the designed method of H∞state feedback controller is *** to the method,the H∞performance and H∞controller are solved by using the LMI toolbox in examples *** results of simulation show the feasibility and validity of the method.

关键词： Networked Control Systems Switching System Lyapunov Function LMI Varying Sampling

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Nano Research 2023年第2期16卷 3339-3347页

作者： Yi Cheng lei lei Wenjuan Zhu Yubin Wang Hai Guo {2. Xu Key Laboratory of Rare Earth Optoelectronic Materials and Devices of zhejiang province Institute of Optoelectronic Materials and DevicesChina Jiliang UniversityHangzhou 310018China College of electronic and Optical engineering and College of Flexible electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Physics Zhejiang Normal UniversityJinhua 321004China

Developing scintillators with high light yield(LY),superior irradiation stability,and weak afterglow is of significance for the realization of low-dose high-resolution X-ray excited optical luminescence(XEOL)*** doped fluoride nanoparticles possess low toxicity,superior environmental stability,facial fabrication process,and tunable emissions,which are appropriate candidates for the next generation nanoscintillators(NSs).However,the low LY and strong positive hysteresis greatly restrict their practical ***,we propose an effective strategy that engineers energy gap to significantly enhance the *** results verify that the tetragonal LiLuF4 host benefits the crystal level splitting of Tb^(3+)ions,which greatly promotes the electrons population on the Tb^(3+):5D4 level followed by the enhanced *** LY of LiLuF4:Tb@LiLuF4 NSs is calculated to be~31,169 photons/MeV,which is much higher than the lead halide perovskite colloidal CsPbBr3(~2.,000 photons/MeV)and LuAG:Ce(~2.,000 photons/MeV)***,the positive hysteresis is remarkably restricted after coating a thin *** X-ray detection limit and spatial resolution are measured to be~2..2. nGy/s and~7.2.lp/mm,*** further verify that this core/shell NS can be employed as scintillating screen to realize XEOL imaging under the low dose rate of 13.86μGy/*** results provide an effective route to develop high performance NSs,which will promote great opportunities for the development of low-dose high-resolution XEOL imaging devices.

关键词： nanoscintillators X-ray excited optical luminescence(XEOL)imaging crystal level splitting low-dose high-resolution

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面向智能交通的人车识别无线感知方法研究

传感技术学报 2024年第7期37卷 1186-1192页

作者：张石清宋铭心陈鑫权楼亮亮赵小明钱小鸿浙江科技学院信息与电子工程学院浙江杭州310023 台州学院智能信息处理研究所浙江台州318000

基于无线感知技术的人车识别方法,具有部署成本低、无侵入性等优点,是智能交通系统智慧水平提升的关键手段。然而,现存人车识别无线感知方法,多以2.4 GHz无线能量数据为基础,忽视sub-GHz在该领域中的应用,且鲜有工作探讨天线高度和人车... 详细信息

基于无线感知技术的人车识别方法,具有部署成本低、无侵入性等优点,是智能交通系统智慧水平提升的关键手段。然而,现存人车识别无线感知方法,多以2.4 GHz无线能量数据为基础,忽视sub-GHz在该领域中的应用,且鲜有工作探讨天线高度和人车识别性能内在联系。为此,旨在厘清载波频段、天线高度与算法性能关联关系,提出基于卷积神经网络的人车识别无线感知方法(Wireless Sensing-Based Human-Vehicle Recognition with Convolutional Neural Network,WsHVR-CNN),阐明人车识别无线感知方法设计依据与多参数影响机理。实验表明,sub-GHz与2.4 GHz无线能量数据均可为人车识别无线感知方法建构奠定基础,而基于2.4 GHz频段所构的WsHVR-CNN性能最优,在天线高度为0.8 m时准确度达到98.15%。此外,所开发的数据集公开于https://***/TZ-mx/WiParam,为相关工作深入研究提供基础。

关键词：人车识别无线感知交通参数测量卷积神经网络

Light-driven soft actuator based on graphene and WSe2.nanosheets composite for multimodal motion and remote manipulation

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Nano Research 2023年第1期16卷 1313-1319页

作者： Zewen Su Yingjie Zhao Youqiang Huang Chaoyue Xu Xiaolei Yang Binrui Wang Beibei Xu shiqing Xu Gongxun Bai College of Optical and electronic Technology China Jiliang UniversityHangzhou 310018China College of Mechanical and Electrical engineering China Jiliang UniversityHangzhou 310018China Key laboratory of Modern Optical Instruments Zhejiang UniversityHangzhou 310018China

Remote controlled soft actuators have attracted ever-increasing interest in industrial,medical,robotics,and engineering *** actuators are charming than normal tools in executing dedicate tasks due to small volume and flexible body they ***,it remains a challenge to design soft actuator that can adapt to multi-environments under remote stimuli with promising nano ***,we have developed a kind of near-infrared laser driven soft actuators with multi locomotive modes based on WSe2.and graphene nanosheets *** locomotion modes are driven by photothermal effect induced deformation to adapt to different working ***,the specially designed gripper driven by pulsed laser can lift a heavy load which is four times of its *** work broadens the choice of advanced nanomaterials for photothermal conversion of soft *** is promising to realize applications including photothermal therapy and complex environment detection through the combination of the intelligent robot design and optical fiber system.

关键词： nanosheets heterostructure WSe2 graphene photothermal conversion light-driven soft actuator

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced Science and Technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and Technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East china university Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2.s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2.15)and the Conceptual Design Report(CDR,2.18),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2.2.-2.2.,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2.30s.

关键词： initiated exceeding precise

Er^(3+)/Tm^(3+)/Yb^(3+)tridoped oxyfluoride glass ceramics with efficient upconversion white-light emission

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Chinese Optics Letters 2010年第1期8卷 66-69页

作者：李晨霞徐时清叶仁广赵士龙邓德刚庄松林 School of Optical-Electrical and Computer engineering University of Shanghai for Science and Technology College of Optical and electronic Technology China Jiliang University

A novel Tm^3＋/Yb^3＋ triply-doped glass ceramics containing BaF2.nano-crystals are successfully prepared. Fluoride nanocrystals BaF2.are successfully precipitated in glass matrix, which is affirmed by the X-ray diffraction results. The intense blue （476 nm）, green （543 nm）, and red （656 nm） emissions of the glass ceramics are simultaneously observed at room temperature under 980-am excitation, and the emission luminescence intensity increases significantly compared with the precursor glass, which is attributed to the low phonon energy of fluoride nanocrystals when rare-earth ions are incorporated into the precipitated BaF2.nanocrystals. Under 980-nm excitation at 400 mW, the international commission on illumination （CIE） chromaticity coordinate （X = 0.2.8, Y = 0.358） of the tridoped oxyfluoride glass ceramics＇ upconversion emissions is close to the standard white-light illumination （X = 0.333, Y= 0.333）. The results indicate that Tm^3＋/Yb^3＋ triply doped glass ceramics can act as suitable materials for potential three-dimensional displays applications.

关键词： Barium compounds Erbium Light Luminescence Nanocrystals X ray diffraction Ytterbium

AEO-9表面活性剂对脉动热管启动和传热特性的影响

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制冷学报 2021年第6期42卷 77-83页

作者：董俊彪姚晔刘世清上海交通大学制冷与低温工程研究所上海200240 浙江师范大学物理与电子信息工程学院金华321004

本文针对脂肪醇聚氧乙烯醚(AEO-9)非离子表面活性剂,在加热功率为40、60、80、100、12. W,AEO-9质量分数为10、2.、30、40 mg/kg工况下,测试了脉动热管的启动时间、热阻和蒸发段温度波动,并与去离子水进行对比。结果表明:AEO-9可以缩短... 详细信息

本文针对脂肪醇聚氧乙烯醚(AEO-9)非离子表面活性剂,在加热功率为40、60、80、100、12. W,AEO-9质量分数为10、2.、30、40 mg/kg工况下,测试了脉动热管的启动时间、热阻和蒸发段温度波动,并与去离子水进行对比。结果表明:AEO-9可以缩短启动时间,启动时间随AEO-9质量分数的增大先减小后增大,在加热功率为40 W、质量分数为2. mg/kg时启动时间最多缩短了2..2.;AEO-9可以减小热阻,加热功率较小时(≤60 W),热阻随AEO-9质量分数的增大而增大;加热功率较大时(≥100 W),热阻随AEO-9质量分数的增大而减小;在加热功率为40 W、质量分数为10 mg/kg时热阻最多减小了35.8%;AEO-9可以减小蒸发段温度波动,且质量分数越高波动越小,在加热功率为12. W、质量分数为40 mg/kg时温度波动幅度最多减小了68.4%。

关键词：脉动热管表面活性剂启动时间传热特性

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压电超声换能器风冷散热的数值仿真

陕西师范大学学报（自然科学版） 2020年第3期48卷 119-124页

作者：潘岳姚晔刘世清上海交通大学机械与动力工程学院上海200240 浙江师范大学物理与电子信息工程学院浙江金华321004

对不同对流散热条件下换能器的温度场进行三维数值模拟,对比分析了吹风方向、来流速度对换能器散热效果的影响。数值仿真结果表明:采用侧向吹风散热方式效果最佳;提高风速可有效降低压电片的温度,但当风速超过一定值时,其对换能器散热...

对不同对流散热条件下换能器的温度场进行三维数值模拟,对比分析了吹风方向、来流速度对换能器散热效果的影响。数值仿真结果表明:采用侧向吹风散热方式效果最佳;提高风速可有效降低压电片的温度,但当风速超过一定值时,其对换能器散热效果降低。进一步对换能器结构进行改造,通过在位移节面处加装散热法兰和翅片,可显著增强散热效果。数值计算表明,加装散热翅片可使换能器压电陶瓷的平均温度降低约42.。

关键词：强制对流散热翅片式压电换能器数值模拟

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基于分层学习的三维模型兴趣点提取算法

计算机辅助设计与图形学学报 2020年第2期32卷 222-232页

作者：舒振宇杨思鹏辛士庆刘予琪龚梦航庞超逸胡超浙江大学宁波理工学院计算机与数据工程学院宁波315100 浙江大学宁波研究院宁波315100 浙江大学机械工程学院杭州310027 山东大学计算机科学与技术学院青岛266237 浙江大学信息与电子工程学院杭州310027 浙江大学工程师学院杭州310027 浙江大学宁波理工学院信息科学与工程学院宁波315100

针对基于学习的三维模型兴趣点提取问题,提出一种兴趣点分层学习的全监督算法.提取三维模型表面所有顶点的特征向量后,将人工标注的兴趣点分为稀疏点和密集点,对于稀疏点使用整个三维模型进行神经网络训练,对于密集点则找出兴趣点分布...

针对基于学习的三维模型兴趣点提取问题,提出一种兴趣点分层学习的全监督算法.提取三维模型表面所有顶点的特征向量后,将人工标注的兴趣点分为稀疏点和密集点,对于稀疏点使用整个三维模型进行神经网络训练,对于密集点则找出兴趣点分布密集的区域进行单独的神经网络训练;然后对2.神经网络进行特征匹配,得到一个用于三维模型兴趣点提取预测的分类器.测试时,提取新输入的三维模型上所有顶点的特征向量,将其输入到训练好的分类器中进行预测,应用改进的密度峰值聚类算法提取兴趣点.算法采用分层学习的策略,解决了传统算法在模型细节处难以准确提取密集兴趣点的问题.在SHREC’11数据集上的实验结果表明,与传统算法相比,该算法提取兴趣点的准确率更高,出现的遗漏点和错误点更少,对解决越来越精细的三维模型的兴趣点提取问题有较大帮助.

关键词：三维模型三维模型兴趣点分层学习