检索结果-南通市图书馆

Scalable fabrication of printed Zn//MnO2 Planar micro-batteries with high volumetric energy density and exceptional safety

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2020年第1期7卷 64-72页

作者： Xiao Wang Shuanghao Zheng Feng Zhou Jieqiong Qin Xiaoyu Shi Sen Wang Chenglin Sun Xinhe Bao Zhong-Shuai Wu Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Department of Chemical Physics University of Science and Technology of China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

The rapid development of printed and microscale electronics imminently requires compatible micro-batteries(MBs) with high performance, applicable scalability, and exceptional safety, but faces great challenges from the ever-reported stacked geometry. Herein the first printed Planar prototype of aqueous-based, high-safety Zn//MnOMBs, with outstanding performance, aesthetic diversity, flexibility and modularization, is demonstrated, based on interdigital patterns of Zn ink as anode and MnOink as cathode, with high-conducting graphene ink as a metal-free current collector, fabricated by an industrially scalable screen-printing technique. The Planar separator-free Zn//MnOMBs, tested in neutral aqueous electrolyte, deliver a high volumetric capacity of 19.3 mAh/cm~3(corresponding to 393 mAh/g) at 7.5 mA/cm~3, and notable volumetric energy density of 17.3 mWh/cm~3, outperforming lithium thin-film batteries(≤10 mWh/cm~3). Furthermore, our Zn//MnOMBs present long-term cyclability having a high capacity retention of 83.9% after 1300 cycles at 5 C, which is superior to stacked Zn//MnObatteries previously reported. Also, Zn//MnOPlanar MBs exhibit exceptional flexibility without observable capacity decay under serious deformation, and remarkably serial and parallel integration of constructing bipolar cells with high voltage and capacity output. Therefore, low-cost, environmentally benign Zn//MnOMBs with in-plane geometry possess huge potential as high-energy, safe, scalable and flexible microscale power sources for direction integration with printed electronics.

关键词： low cost printed Planar Zn//MnO2 micro-batteries metal-free current collectors

Plasmonic evolution maps for Planar metamaterials

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2021年第1期9卷 73-80页

作者： LIYONG JIANG JIANLI JIANG ZEBIN ZHU GUANGHUI YUAN MING KANG ZE XIANG SHEN Institute of Micro-nano Photonics&Beam Steering School of ScienceNanjing University of Science and TechnologyNanjing 210094China Centre for Disruptive Photonic Technologies The Photonics InstituteSchool of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore College of Physics and Electronic Information Science Tianjin Normal UniversityTianjin 300387China

Understanding the mode’s origin in Planar metamaterials is fundamental for related applications in nanophotonics and plasmonics.For complex Planar metamaterials,conventional analysis that directly obtains the final charge/current distribution of a mode is usually difficult in helping to understand the mode’s origin.In this paper,we propose a mode evolution method(MEM)with a core analysis tool,i.e.,plasmonic evolution maps(PEMs),to describe the mode evolution in several complementary Planar metamaterials with designed plasmonic atoms/molecules.The PEMs could not only clearly explain a mode’s origin,but also reveal the role of a structure’s symmetry in the mode formation process.The MEM with PEMs can work as a simple,efficient,and universal approach for the mode analysis in different kinds of Planar metamaterials.

关键词： process. Planar maps

Resonant transparency of a Planar anapole metamaterial at terahertz frequencies

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2021年第2期9卷 125-130页

作者： XIANGJUN LI JIE YIN JIANJUN LIU FANGZHOU SHU TINGTING LANG XUFENG JING ZHI HONG Centre for THz Research China Jiliang UniversityHangzhou 310018China

Anapole metamaterials have attracted growing attention in recent years due to their unique nonradiating and nontrivial properties. Although anapole modes have been demonstrated in metamaterials with threedimensional structures, the design and realization of Planar anapole metamaterials in a wide frequency range is still a big challenge. Here we propose and experimentally demonstrate a Planar anapole metamaterial consisting of dumbbell-shaped apertures on a stainless-steel sheet at terahertz frequencies. The Planar metamaterial can generate a resonant transparency in the terahertz spectrum due to the excitation of the anapole mode.Particularly, the frequency of anapole-induced resonant transparency can be tuned easily in the range of 0.15–0.93 THz by simply varying one geometric parameter of the dumbbell apertures. We anticipate that the resonant transparency in Planar anapole metamaterials can be potentially used in filters, sensors, or other photonic devices.

关键词： Planar transparency resonant

A high sensitivity piezoelectric Planar underwater acoustic transducer

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Acoustics 2023年第1期42卷 71-81页

作者： WANG Hongwei HUI Hui RONG Tian College of Science Beijing Information Science and Technology UniversityBeijing100192

A piezoelectric Planar transducer with high sensitivity is designed and fabricated.The transducer sensing element is an improvement of the 1-3-2 type piezoelectric composite structure,the piezoelectric ceramic column array with a substrate is not injected with polymer,and the upper surface is directly covered with a metal plate,the improved structure of“piezoelectric column array with substrate+metal cover plate”sensitive element(called“Air filled”sensitive element)is formed.The resonant frequency of the“Air filled”transducer is calculated theoretically and simulated by the finite element method,which is in good agreement with the measured result.In order to compare the performances,the transducer with the structure of“1-3-2 type piezoelectric composite+metal cover plate”(called“Polymer filled”transducer)is made.The effective electromechanical coupling coefficient,transmitting voltage response and receiving sensitivity of“Air filled”and“Polymer filled”transducers are simulated and measured respectively.The“Air filled”transducer has a higher receiving sensitivity,which can be increased by 21 dB compared with the“Polymer filled”transducer.The transducer can effectively improve the sensitivity,which can provide a reference for the development of high-sensitivity transducer.

关键词： piezoelectric filled Planar

High isotropic dispiro structure hole transporting materials for Planar perovskite solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2019年第5期28卷 152-158页

作者： Bin Cai Xichuan Yang Haoxin Wang Weihan Wang Jincheng An Licheng Sun State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology (DUT)Dalian 116024LiaoningChina Department of Chemistry School of Chemical Science and EngineeringKTH Royal Institute of Technology10044 StockholmSweden

Two novel fluorene-based hole transporting materials (HTMs) were synthesized to be used in perovskite solar cells (PSCs). C102 was designed based on C101 by simply linking the two carb on-carbon single bonds to compose a "dispiro" structure. Their typically similar structures cause them sharing almost the same energy levels. However, their photovoltaic performances are quite different due to the small variations. The PSC that contained the "dispiro" structure, C102, reached a power conversion efficiency (PCE) of 17.4%, while the device contained C101, obtained a lower PCE of 15.5%. Electrochemical properties and Photovoltaic characterization of the two materials have been investigated to explain the result. It is shown that C102 has a stronger ability to transport holes and resist the charge recombination. Thus, the dispiro structure should be more appropriate being used as HTM in PSCs.

关键词： Dispiro Hole transporting materials Planar perovskite solar cells

Mid-Infrared InAs/GaSb Superlattice Planar Photodiodes Fabricated by Metal–Organic Chemical Vapor Deposition

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2020年第6期37卷 115-118页

作者：赵宇滕龑缪静君吴启花高晶晶李欣郝修军赵迎春董旭熊敏黄勇 Key Lab of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of SciencesSuzhou 215123China Nano-fabrication Facility Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of SciencesSuzhou 215123China

Mid-wavelength infrared Planar photodiodes were demonstrated,in which both the epitaxy growth of InAs/GaSb superlattices and the thermal diffusion of p-type dopant were performed in production-scale metal-organic chemical vapor deposition reactors.The formation of a Planar homojunction was confirmed by secondary ion mass spectroscopy and itsⅠ-Ⅴcharacteristics.A cut-off wavelength around 5μm was determined in 77 K optical characterization,and photo-current as high as 600 nA was collected from a reverse-biased Planar diode of 640μm diameter.These preliminary results were obtained despite the structural degradation revealed by x-ray diffraction,and we attribute the degradation to the concert of thermal annealing and high Zn concentration behind the diffusion front.

关键词： InAs/GaSb dopant Planar

Integrating Planar photonics for multi-beam generation and atomic clock packaging on chip

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第4期12卷 691-701页

作者： Chad Ropp Wenqi Zhu Alexander Yulaev Daron Westly Gregory Simelgor Akash Rakholia William Lunden Dan Sheredy Martin MBoyd Scott Papp Amit Agrawal Vladimir Aksyuk Physical Measurement Laboratory National Institute of Standards and TechnologyGaithersburgMD 20899USA Department of Chemistry and Biochemistry University of MarylandCollege ParkMD 20742USA Vector Atomic Inc.PleasantonCA 94588USA Physical Measurement Laboratory National Institute of Standards and TechnologyBoulderCO 80305USA

The commercialization of atomic technologies requires replacing laboratory-scale laser setups with compact and manufacturable optical platforms.Complex arrangements of free-space beams can be generated on chip through a combination of integrated photonics and metasurface optics.In this work,we combine these two technologies using flip-chip bonding and demonstrate an integrated optical architecture for realizing a compact strontium atomic clock.Our Planar design includes twelve beams in two co-aligned magneto-optical traps.These beams are directed above the chip to intersect at a central location with diameters as large as 1 cm.Our design also includes two co-propagating beams at lattice and clock wavelengths.These beams emit collinearly and vertically to probe the center of the magneto-optical trap,where they will have diameters of≈100μm.With these devices we demonstrate that our integrated photonic platform is scalable to an arbitrary number of beams,each with different wavelengths,geometries,and polarizations.

关键词： Planar diameters atomic

Crack Length Quantification Based on Planar Eddy-Current Sensor Array and Two-Dimensional Image

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2018年第6期35卷 1047-1052页

作者： Liu Lihui Tian Wugang Pan Mengchun Chen Dixiang Xie Ruifang Ren Yuan College of Mechatronics and Automation National University of Defense Technology

Eddy-current (EC) testing is an effective electromagnetic non-destructive testing (NDT) technique.Planar eddy-current sensor arrays have several advantages such as good coherence,fast response speed,and high sensitivity,which can be used for micro-damage inspection of crucial parts in mechanical equipments and aerospace aviation.The main purpose of this research is to detect the defect in a metallic material surface and identify the length of a crack using Planar eddy-current sensor arrays in different directions.The principle and characteristics of Planar eddy-current sensor arrays are introduced,and a crack length quantification algorithm in different directions is investigated.A damage quantitative detection system is established based on a field programmable gate array and ARM processor.The system is utilized to inspect the micro defect in a metallic material,which is carved to micro crack with size of 7mm(length)×0.1mm(width)×1mm(depth).The experimental data show that the sensor arrays can be used for the length measurement repeatedly,and that the uncertainty of the length measurement is below ±0.2mm.

关键词： crack Planar eddy-current sensor array non-destructive testing(NDT) quantification 2-D image

A novel static shape-adjustment technique for Planar phased-array satellite antennas

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2018年第6期34卷 1145-1155页

作者： Ji-Yang Zhou Guang-Yu Lu Guo-Ping Cai Guang-Qiang Fang Liang-Liang Lv Jun-Wei Shi Department of Engineering Mechanics State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Aerospace System Engineering Shanghai 201109China

Planar phased-array satellite antennas deform when subjected to external disturbances such as thermal gradients or slewing maneuvers.Such distortion can degrade the coherence of the antenna and must therefore be eliminated to maintain performance.To support Planar phased-array satellite antennas,a truss with diagonal cables is often applied,generally pretensioned to improve the stiffness of the antenna and maintain the integrity of the structure.A new technique is proposed herein,using the diagonal cables as the actuators for static shape adjustment of the Planar phased-array satellite antenna.In this technique,the diagonal cables are not pretensioned;instead,they are slack when the deformation of the antenna is small.When using this technique,there is no need to add redundant control devices,improving the reliability and reducing the mass of the antenna.The finite element method is used to establish a structural model for the satellite antenna,then a method is introduced to select proper diagonal cables and determine the corresponding forces.Numerical simulations of a simplified two-bay satellite antenna are first carried out to validate the proposed technique.Then,a simplified 18-bay antenna is also studied,because spaceborne satellite antennas have inevitably tended to be large in recent years.The numerical simulation results show that the proposed technique can be effectively used to adjust the static shape of Planar phased-array satellite antennas,achieving high precision.

关键词： Planar phased-array satellite antenna Static shape adjustment Diagonal cables Active control