检索结果-南通市图书馆

White light emission in 0D halide perovskite[(CH_(3))_(3)S]_(2)SnCl_(6)·H_(2)O crystals through variation of doping ns^(2) ions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Optoelectronics 2024年第1期17卷 57-66页

作者： Yitong Lin Yu Zhong Yangpeng Lin Jiawei Lin Lei Pang Zhilong Zhang Yi Zhao Xiao‑Ying Huang Ke‑Zhao Du Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Collage of Chemistry and Material ScienceFujian Normal UniversityFuzhou 350007China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Qinghai Environmental Monitoring center Xining 810000China Strait Institute of Flexible electronics(SIFE Future Technologies)Fujian Normal University and Strait Laboratory of Flexible Electronics(SLoFE)Fuzhou 350007China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

With the rapid development of white LEDs,the research of new and efficient white light emitting materials has attracted increasing *** dimensional(0D)organic–inorganic hybrid metal halide perovskites with superior luminescent property are promising candidates for LED application,due to their abundant and tailorable ***,[(CH_(3))_(3)S]_(2)SnCl_(6)・H_(2)O is synthesized as a host for dopant ions Bi^(3+)and Sb^(3+).The Sb^(3+)doped,or Bi^(3+)/Sb^(3+)co-doped,[(CH_(3))3S]_(2)SnCl_(6)・H_(2)O has a tunable optical emission spectrum by means of varying dopant ratio and excitation *** a result,we can achieve single-phase materials suitable for emission ranging from cold white light to warm white *** intrinsic mechanism is examined in this work,to clarify the dopant effect on the optical *** high stability of title crystalline material,against water,oxygen and heat,makes it promising for further application.

关键词： 0D Metal halide White light Perovskite Ions doping Excitation dependent

Research on Optimization of Freight Train ATO Based on Elite Competition Multi-Objective Particle Swarm Optimization

在线全文

学校读者我要写书评

暂无评论

Research on Optimization of Freight Train ATO Based on Elite...

Broadband mid-infrared nonlinear optical modulator enabled by gold nanorods:towards the mid-infrared regime

作者： Lingzhi Yi Renzhe Duan Wang Li Yihao Wang Dake Zhang Bo Liu Hunan Province Engineering Research center for Multi-Energy Collaborative Control Technology College of Automation and Electronics Information Xiangtan University The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration

In view of the complex problems that freight train ATO（automatic train operation） needs to comprehensively consider punctuality, energy saving and safety, a dynamics model of the freight train operation process is established based on the safety and the freight train dynamics model in the process of its operation. The algorithm of combining elite competition strategy with multi-objective particle swarm optimization technology is introduced, and the winning particles are obtained through the competition between two elite particles to guide the update of other particles, so as to balance the convergence and distribution of multi-objective particle swarm optimization. The performance comparison experimental results verify the superiority of the proposed algorithm. The simulation experiments of the actual line verify the feasibility of the model and the effectiveness of the proposed algorithm.

关键词： Freight Train Automatic Train Operation Dynamics Model Competitive Multi-Objective Particle Swarm Optimization Algorithm(CMOPSO) Multi-Objective Optimization

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

photonics Research 2019年第6期7卷 699-704页

作者： BIN HUANG ZHE KANG JIE LI MINGYI LIU PINGHUA TANG LILI MIAO CHUJUN ZHAO GUANSHI QIN WEIPING QIN SHUANGCHUN WEN PARAS N.PRASAD Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and Electronics Hunan University Changsha 410082 China State Key Laboratory on Integrated Optoelectronics College of Electronic Science & Engineering Jilin University Changchun 130012 China Changchun Observatory National Astronomical Observatories Chinese Academy of Sciences Changchun 130117 China Hunan Key Laboratory for Micro-Nano Energy Materials and Devices Xiangtan University Xiangtan 411105 China Institute for Lasers Photonics Biophotonics University at Buffalo State University of New York Buffalo New York 14260 USA

Mid-infrared pulsed lasers operating around the 3 μm wavelength regime are important for a wide range of applications including sensing, spectroscopy, imaging, etc. Despite the recent advances in technology, the lack of a nonlinear optical modulator operating in the mid-infrared regime remains a significant challenge. Here, we report the third-order nonlinear optical response of gold nanorods(GNRs) ranging from 800 nm to the mid-infrared regime(2810 nm) enabled by their size and overlapping behavior-dependent longitudinal surface plasmon resonance. In addition, we demonstrate a wavelength-tunable Er3+-doped fluoride fiber laser modulated by GNRs, which can deliver pulsed laser output, with the pulse duration down to 533 ns, tunable wavelength ranging from 2760.2 to 2810.0 nm, and spectral 3 d B bandwidth of about 1 nm. The experimental results not only validate the GNRs’ robust mid-infrared nonlinear optical response, but also manifest their application potential in high-performance broadband optoelectronic devices.

关键词： optical modulator mid-infrared regime

Digital light processing 3D printing of porous ceramics based on multi-materials additive manufacturing

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2023年第7期42卷 14-16页

作者： Xiaodong Liu Congmin Lv Bingshan Liu Gong Wang Wenyan Duan Yue Gu Technology and Engineering center for Space Utilization Chinese Academy of SciencesBeijing100094China University of Chinese Academy of Sciences Beijing101408China

*** Porous ceramics are widely used in many fields,including aerospace,electronics,medical materials,and *** possess properties such as high-temperature resistance,corrosion resistance,good chemical stability,and large specific surface areas[1].Traditionally,porous ceramics are prepared using techniques such as partial sintering,pore-forming method,freeze-drying,tin plating,direct foaming,and recrystallization[2,3].However,it is challenging for these techniques to meet the requirements for complicated structures and rapid prototyping.

关键词： ceramics porous printing

Diffractive optical elements 75 years on:from micro-optics to metasurfaces

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

photonics Insights 2023年第4期2卷 43-101页

作者： Qiang Zhang Zehao He Zhenwei Xie Qiaofeng Tan Yunlong Sheng Guofan Jin Liangcai Cao Xiaocong Yuan Nanophotonics Research center Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhenChina Department of Precision Instruments Tsinghua UniversityBeijingChina center for Optics Photonics and LasersLaval UniversityQuebecCanada Research Institute of Intelligent Sensing Research Center for Humanoid SensingZhejiang LabHangzhouChina

Diffractive optical elements(DOEs)are intricately designed devices with the purpose of manipulating light fields by precisely modifying their *** concept of DOEs has its origins dating back to 1948 when *** first introduced ***,researchers introduced binary optical elements(BOEs),including computer-generated holograms(CGHs),as a distinct category within the realm of *** was the first revolution in optical *** next major breakthrough in light field manipulation occurred during the early 21st century,marked by the advent of metamaterials and *** are particularly appealing due to their ultra-thin,ultra-compact properties and their capacity to exert precise control over virtually every aspect of light fields,including amplitude,phase,polarization,wavelength/frequency,angular momentum,*** advancement of light field manipulation with micro/nano-structures has also enabled various applications in fields such as information acquisition,transmission,storage,processing,and *** this review,we cover the fundamental science,cutting-edge technologies,and wide-ranging applications associated with micro/nano-scale optical devices for regulating light *** also delve into the prevailing challenges in the pursuit of developing viable technology for real-world ***,we offer insights into potential future research trends and directions within the realm of light field manipulation.

关键词： diffractive optical elements metasurfaces metamaterials

Recent progress and perspectives on silicon anode:Synthesis and prelithiation for LIBs energy storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第1期31卷 615-650,I0016页

作者： Yuanxing Zhang Borong Wu Ge Mu Chengwei Ma Daobin Mu Feng Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing Key Laboratory of Environment Science and EngineeringBeijing 100081China Collaborative Innovation center of Electric Vehicles in Beijing Beijing 100081China

The ever-increasing environmental/energy crisis as well as the rapid upgrading of mobile devices had stimulated intensive research attention on promising alternative energy storage and conversion *** these devices,alkali metal ion batteries,such as lithium-ion batteries(LIBs) had attracted increasing research attention due to its several advantages including,environmental friendliness,high power density,long cycle life and excellent *** had been widely used in consumer electronics,electric vehicles,and large power grids et ***-based(silicon and their oxides,carbides) anodes had been widely *** several advantages including low cost,high theoretical capacity,natural abundance,and environmental friendliness,which shows great potential as anodes of *** this review,we summarized the recently progress in the synthetic method of silicon matrix *** empirical method for prelithiation of silicon-based materials were also ***,we also reviewed some novel characterization ***,the new design,preparation methods and properties of these nano materials were reviewed and *** hoped that this review can provide a general overview of recent progress and we briefly highlighted the current challenges and prospects,and will clarify the future trend of silicon anode LIBs research.

关键词： Si anodes Lithium-ion batteries Prelithiation Characterization Energy storage and conversion

Nonreciprocity of magnons goes into the quantum region

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2022年第8期65卷 158-158页

作者： Yueting Pan Ke Xia Beijing Computational Science Research center Beijing 100193China

According to the Lorentz reciprocity theorem, an electromagnetic wave has the reciprocity of bi-directional transmission through ordinary time inversion invariant media. In some special systems(such as optical isolators and annular devices), however, a transmission can be nonreciprocal, and such transmission is typical so far. Despite the critical role of quantum nonreciprocal devices in chiral quantum technology and topological photonics [1], their physical realization remains challenging.

关键词： quantum reciprocal ordinary

Directly wireless communication of human minds via non-invasive brain-computer-metasurface platform

在线全文

学校读者我要写书评

暂无评论

eLight 2022年第1期2卷 132-142页

作者： Qian Ma Wei Gao Qiang Xiao Lingsong Ding Tianyi Gao Yajun Zhou Xinxin Gao Tao Yan Che Liu Ze Gu Xianghong Kong Qammer HAbbasi Lianlin Li Cheng‑Wei Qiu Yuanqing Li Tie Jun Cui Institute of Electromagnetic Space Southeast UniversityNanjing 210096China School of Automation Science and Engineering South China University of TechnologyGuangzhou 510641China State Key Laboratory of Millimeter Wave Southeast UniversityNanjing 210096China center of Intelligent Metamaterials Pazhou Laboratory Guangzhou 510330China Research center for Brain-Computer Interface Pazhou LabGuangzhou 510330China Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore University of Glasgow James Watt School of EngineeringGlasgow G128QQUK State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsPeking UniversityBeijing 100871China

Brain-computer interfaces(BCIs),invasive or non-invasive,have projected unparalleled vision and promise for assisting patients in need to better their interaction with the *** by the BCI-based rehabilitation technologies for nerve-system impairments and amputation,we propose an electromagnetic brain-computer-metasurface(EBCM)paradigm,regulated by human’s cognition by brain signals directly and *** experimentally show that our EBCM platform can translate human’s mind from evoked potentials of P300-based electroencephalography to digital coding information in the electromagnetic domain non-invasively,which can be further processed and transported by an information metasurface in automated and wireless *** wireless communications of the human minds are performed between two EBCM operators with accurate text ***,several other proof-of-concept mind-control schemes are presented using the same EBCM platform,exhibiting flexibly-customized capabilities of information processing and synthesis like visual-beam scanning,wave modulations,and pattern encoding.

关键词： communication computer surface

Advances in diamond nanofabrication for ultrasensitive devices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2017年第1期3卷 80-95页

作者： Stefania Castelletto Lorenzo Rosa Jonathan Blackledge Mohammed Zaher Al Abri Albert Boretti School of Engineering RMIT UniversityBundooraVictoria 3083Australia Swinburne University of Technology Centre for Micro-Photonics(H74)HawthornVictoria 3122Australia Department of Information Engineering University of ParmaParma 43121Italy Military Technological College Muscat 111Sultanate of Oman Dublin Institute of Technology Rathmines RoadDublin 6Ireland Department of Petroleum and Chemical Engineering Sultan Qaboos UniversityPO Box 33Al-KhoudMuscat 123Sultanate of Oman Water Research center Sultan Qaboos UniversityPO Box 17Al-KhoudMuscat 123Sultanate of Oman Department of Mechanical and Aerospace Engineering Benjamin M.Statler College of Engineering and Mineral ResourcesWest Virginia UniversityP.O.Box 6106325 Engineering Sciences BuildingMorgantownWV 26506USA

This paper reviews some of the major recent advances in single-crystal diamond nanofabrication and its impact in nano-and micromechanical,nanophotonics and optomechanical *** constituents of integrated devices incorporating specific dopants in the material provide the capacity to enhance the sensitivity in detecting mass and forces as well as magnetic field down to quantum mechanical limits and will lead pioneering innovations in ultrasensitive sensing and precision measurements in the realm of the medical sciences,quantum sciences and related technologies.

关键词： nano-diamonds nanofabrication nanomechanics nanophotonics optomechanics