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Analysis of rectangular and triangular end array type piezoelectric vibration energy harvester

MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 2015年第10期21卷 2165-2173页

作者： Kirubaveni, S. Radha, S. Sreeja, B. S. Sivanesan, T. SSN Coll Engn Dept ECE Madras Tamil Nadu India

A new array type cantilever structure with improved bandwidth and enhanced power output is proposed in this paper. Instead of having a normal rectangular end, the proposed cantilever will have triangular end with proof mass which will increase the power output and further the power is improved by having an array structure. In the array of cantilever, each structure will be having different proof mass so that the frequency with which they vibrate will differ. By using this new array structure of cantilever, bandwidth of 39 Hz and power of 7 mu W is generated for rectangular end and bandwidth of 48 Hz and power of 8 mu W is generated for triangular end.

关键词： Bandwidth Power output Rectangular harvesters Vibrational energy Triangular Energy sources array structure arrays

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Hydrothermal synthesis of Ni, Co hydroxide nanosheet array on vertically suspended carbon cloth for flexible high-performance supercapacitors

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CERAMICS INTERNATIONAL 2024年第20期50卷 39167-39174页

作者： Guo, Yanming Du, Xindong Hu, Liangqing Lu, Yinpeng Yao, Shipeng Zhao, Minghao Zhou, Weichi Wei, Tong Zhang, Hexin Chang, Jin Feng, Jing Harbin Engn Univ Key Lab Superlight Mat & Surface Technol Minist Educ Harbin 150001 Peoples R China Taiyuan Univ Sci & Technol Coll Energy & Mat Engn Taiyuan 300024 Peoples R China

The investigation of Ni(OH)2 electrode materials has been a prominent issue in the field of electrochemical energy. The slow ion diffusion kinetics and inherent low electronic conductivity of Ni(OH)2 restrict its electrochemical performance and application in practice. In this work, mixed-phase nickel-cobalt layered double hydroxide (NiCoLDH) array structures are successfully grown directly on vertically suspended carbon cloth (CC). In contrast to the traditional hydrothermal method, the vertically suspended carbon cloth affordes adequate reaction sites to ensure optimum array structure growth. This unique structure realizes a large mass loading of the active material. Meanwhile, the introduction of flexible electrode substrate carbon cloth effectively enhances the mechanical properties of the electrode. Due to the powerful electrochemistry kinetics, NiCoLDH/CC-1.5 exhibites a great capacitive and excellent rate performance of 1516.5 F g- 1 at 1 A g- 1 and 1073.75 F g- 1 even at 20 A g- 1. The assembled asymmetric supercapacitor demonstrates a favorable cycling stability (capacitance retention of 90.11 % after 10,000 cycles at 5 A g- 1).

关键词： array structure Metal hydroxide Self-growth vertically Battery-type materials

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Research on the thermal performance and stability of three-dimensional array pulsating heat pipe for active/passive coupled thermal management application

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APPLIED THERMAL ENGINEERING 2024年 245卷

作者： Dai, Yucheng Zhang, Ren Qin, Zhongyang Liu, Kaibao Liu, Changhui Zhao, Jiateng China Univ Min & Technol Sch Low Carbon Energy & Power Engn Xuzhou 221116 Peoples R China

The efficient heat transfer performance of three-dimensional pulsating heat pipes can effectively deal with the heat dissipation problems in the field of electronics integration. However, the large contact thermal resistance and complex layout limit the actual cooling efficiency. In this study, a novel three-dimensional array pulsating heat pipe (3D-APHP) with a dual-plane structure was designed. The top and bottom of the 3D-APHP are mounted with flat plates, and the center section is connected by multiple parallel array tubes. The planar and array structures enhance the flexibility in the actual layout of the pulsating heat pipe to accommodate space constraints. The effects of different conditions (working fluid, filling rate, heating power, tube diameter and installation condition) on the heat transfer performance and uniform temperature performance of 3D-APHP were investigated. It is found that 3D-APHP demonstrates efficient heat transfer capability and temperature uniformity. The minimum thermal resistance and maximum thermal conductivity can reach 0.059 degrees C/W and 170.1 KW/m degrees C, respectively. Moreover, 3D-APHP exhibits good heat transfer performance across different installation positions with a maximum thermal resistance not exceeding 1.1 degrees C/W, revealing significant potential for applications. Meanwhile, the two-phase heat transfer process inside the 3D-APHP was analyzed. The uniform vapor-liquid plug distribution can significantly strengthen the thermal performance of the 3D-APHP.

关键词： Pulsating heat pipe array structure Heat transfer performance Flow mechanism

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A 29-ns 64-Mb DRAM with hierarchical array architecture

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IEEE JOURNAL OF SOLID-STATE CIRCUITS 1996年第9期31卷 1302-1307页

作者： Nakamura, M Takahashi, T Akiba, T Kitsukawa, G Morino, M Sekiguchi, T Asano, I Komatsuzaki, K Tadaki, Y Cho, S Kajigaya, K Tachibana, T Sato, K HITACHI DEVICE ENGN CO LTD CHIBA 297JAPAN HITACHI LTD SEMICOND & INTEGRATED CIRCUITS DIVKODAIRATOKYO 187JAPAN HITACHI VLSI ENGN CORP LTD KODAIRATOKYO 187JAPAN TEXAS INSTRUMENTS JAPAN LTD IBARAKIOSAKA 30004JAPAN

A 29-ns (RAS access time), 64-Mb DRAM with hierarchical array architecture has been developed, For consistent high yields and high speed, a CMOS segment driver circuit is used as a hierarchical word line scheme, To achieve high speed, precharge signal (PC) drivers for equalizing the bit lines pairs, and shared sense amplifier signal (SHR) drivers are distributed in the array, To enhance sense amplifiers speed in low array voltage, an over driven sense amplifier is adopted, A hierarchical I/O scheme with semidirect sensing switch is introduced for high speed data transfer in the I/O paths. By combining these proposed circuit techniques and 0.25-mu m CMOS process technologies with phase-shift optical lithography, an experimental 64-Mb DRAM has been designed and fabricated. The memory cell size is 0.71 x 1.20 mu m(2), and the chip size is 15.91 x 9.06 mm(2). A typical access time under 3.3 V power supply voltage is 29 ns.

关键词： DRAM1 gene bit line Hierarchical Storage access times high speed data IO array structure Sense amplifiers circuit technique die size supply voltage

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AN EFFICIENT PATTERN SYNTHESIS METHOD FOR CYLINDRICAL PHASED array ANTENNAS

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JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS 2009年第4期23卷 473-482页

作者： He, Q. -Q. He, H. -D. Lan, H. SW China Inst Elect Technol Chengdu 610036 Peoples R China

An efficient approach for calculating the far field pattern of conformal phased array antennas mounted on cylindrical-shaped platforms is proposed. The array structure is taken into account by using an active element pattern technique, and the array is analyzed by using an element-by-element approach. The effects of all mutual couplings in the array environments are considered rigorously, and the efficiency of the proposed method is validated by using the commercial full-wave simulation software HFSS. Finally, a low side-lobe cylindrical phased array is designed for engineering by optimizing phases and amplitudes of port excitations.

关键词： full-wave antenna phased arrays phased array Amplitude Mutual coupling Engineering Antenna arrays active device emulation program array structure arrays

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Oil-in-water emulsion as fabrication platform for uniform plasmon-controlled two-dimensional metallic nanoparticle array

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APPLIED PHYSICS EXPRESS 2016年第7期9卷 75003.1-75003.1页

作者： Kagawa, Ryusuke Takeyasu, Nobuyuki Kaneta, Takashi Takemoto, Yoshito Okayama Univ Grad Sch Nat Sci & Technol Okayama 7008530 Japan

Gold/silver nanoparticles were trapped at the oil/water interface of oil droplets dispersed in water. The metallic nanoparticles were self-assembled into a uniform two-dimensional large array structure through the aggregation and coalescence of the nanoparticle-covered oil droplets. The plasmon resonance of the array structure was tunable and a surface-enhanced Raman scattering measurement was performed with the silver nanoparticle array. The enhancement factor was similar to 10(5) and enhanced Raman signals were observed over the whole array (greater than or similar to cm(2)) with high reproducibility, which is an advantage of a self-assembly method using a liquid/liquid interface. (C) 2016 The Japan Society of Applied Physics

关键词： Uniform Coalescence assembly method enhancement factor Uniforms Metal Nanoparticles array structure water/oil emulsion

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14-W PEAK POWER GRATING SURFACE-EMITTING LASER array

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ELECTRONICS LETTERS 1990年第17期26卷 1380-1381页

作者： EVANS, GA CARLSON, NW BOUR, DP LURIE, M DEFREEZ, RK BOSSERT, DJ OREGON GRAD CTR DEPT APPL PHYS & ELECT ENGNBEAVERTONOR 97006

A two dimensional grating-surface-emitting laser array containing 140 elements produced up to 14 W peak power with a differential quantum efficiency of about 25% from one surface. The array structure included a strain... 详细信息

关键词： 0.95 micron 14 W 25 percent 2D grating 2D laser arrays array structure differential quantum efficiency grating surface-emitting laser array peak power semiconductor junction lasers strained layer quantum well

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Architecture and signal transduction mechanism of the bacterial chemosensory array: Progress, controversies, and challenges

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CURRENT OPINION IN STRUCTURAL BIOLOGY 2014年 29卷 85-94页

作者： Falke, Joseph J. Piasta, Kene N. Univ Colorado Dept Chem & Biochem Boulder CO 80309 USA Univ Colorado Mol Biophys Program Boulder CO 80309 USA

Recent research has deepened our understanding of the ancient, conserved chemosensory array that detects small molecule attractants and repellents, and directs the chemotaxis of bacterial and archaeal cells towards an optimal chemical environment. Here we review advances towards a molecular description of the ultrastable lattice architecture and ultrasensitive signal transduction mechanism of the chemosensory array, as well as controversies and challenges requiring further research. Ultimately, a full molecular understanding of array structure and on-off switching will foster (i) the design of novel therapies that block pathogenic wound seeking and infection, (ii) the development of highly specific, sensitive, stable biosensors, and (iii) the elucidation of general functional principles shared by receptor patches in all branches of life.

关键词： Repellents ARCHITECTURE Building construction arrays Chemotaxis Disputes array structure archaeal cell

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ZERO WAITING-CYCLE HIERARCHICAL BLOCK MATCHING ALGORITHM AND ITS array ARCHITECTURES

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 1994年第1期4卷 18-28页

作者： WANG, BM YEN, JC CHANG, S Department of Electrical Engineering National Tsing Hua University Hsinchu Taiwan

A new hierarchical block matching algorithm with a novel arrangement of data flow is proposed in this paper. Its speed can be as fast as that of the conventional hierarchical block matching algorithms and its prediction quality is very close to the full search algorithm. In order to implement this algorithm, a multiprocessor array architecture for real-time processing is proposed. Due to the novel arrangement of data flow, the limitations of conventional ones will no longer exist. Moreover, the hardware complexity, size of local memory, input bandwidth, and speed performance of the proposed architecture are also analyzed. Finally, the simulation results are given to demonstrate the effectiveness of this new algorithm.

关键词： speed performance ARCHITECTURE Simulation results real-time process algorithms block matching SEARCHING ALGORITHM Hierarchical data flow array structure

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Electrodeposition of Ni₅Sb₂ nanowires array and its application as a high-performance anode material for lithium ion batteries

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MICROELECTRONIC ENGINEERING 2013年第Apr.期104卷 1-4页

作者： Yang, You-wen Li, Tian-ying Liu, Fei Zhu, Wen-bin Li, Xue-liang Wu, Yu-cheng Kong, Ming-guang Hefei Univ Technol Sch Chem Engn Hefei 230009 Peoples R China Hefei Univ Technol Sch Mat Sci & Engn Hefei 230009 Peoples R China Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China

Single crystal Ni5Sb2 nanowires array is synthesized by direct-current electrodeposition technique. The initial specific discharge and charge capacity of the as-produced Ni5Sb2 nanowires array electrode as an anode material for lithium-ion batteries presents 290.6 mAh g(-1) and 225 mAh g(-1) respectively at a current density of 60 mA g(-1). Its charge-discharge curve displays an excellent platform. Initial coulombic efficiency of the electrode is above 77%, and it becomes greater than 95% after several charge/discharge cycles. (C) 2012 Elsevier B.V. All rights reserved.

关键词： Nanowires array structure Anode Lithium-ion batteries Charge/discharge capacity

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