ASPECT-RATIO

作品数：12被引量：15H指数：3
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相关领域：理学更多>>
相关期刊：《Communications in Theoretical Physics》《Chinese Physics Letters》《Earthquake Engineering and Engineering Vibration》《Light(Advanced Manufacturing)》更多>>
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Ultra-high-aspect-ratio structures through silicon using infrared laser pulses focused with axicon-lens doublets被引量：1
《Light(Advanced Manufacturing)》2024年第3期1-15,共15页Niladri Ganguly Pol Sopena David Grojo 
conducted using LaMP facilities at LP3.The project received funding from the French National Research Agency(ANR-22-CE92-0057-0,KiSS project)and the European Union’s Horizon 2020 research and innovation program under grant agreements No.101034324(MSCA-COFUND)and No.724480(ERC).
We describe how a direct combination of an axicon and a lens can represent a simple and efficient beam-shaping solution for laser material processing applications.We produce high-angle pseudo-Bessel micro-beams at 155...
关键词：Beam-shaping Infrared ultrafast laser Silicon processing Through-silicon-via 
Elliptical vibration chiseling:a novel process for texturing ultra-high-aspect-ratio microstructures on the metallic surface
《International Journal of Extreme Manufacturing》2024年第2期449-467,共19页Zhiwei Li Jianfu Zhang Zhongpeng Zheng Pingfa Feng Dingwen Yu Jianjian Wang 
support for this research provided by the National Natural Science Foundation of China(Grant No.52105458);Beijing Natural Science Foundation(Grant No.3222009);Huaneng Group Science and Technology Research Project(No:HNKJ22-H105);China Postdoctoral Science Foundation(Grant No.2022M711807)。
High-aspect-ratio metallic surface microstructures are increasingly demanded in breakthrough applications,such as high-performance heat transfer enhancement and surface plasmon devices.However,the fast and cost-effect...
关键词：metallic microstructure high aspect ratio backward-moving cutting vibration cutting chiseling material deformation 
Effect of leading-edge tubercles on the flow over low-aspect-ratio wings at low Reynolds number
《Theoretical & Applied Mechanics Letters》2023年第1期41-49,共9页Pengxin Yang Yichen Zhu Jinjun Wang 
financial support from the National Natural Science Foundation of China under grand No.11721202。
Two-dimensional time-resolved particle image velocimetry(TR-PIV)and stereographic particle image velocimetry(SPIV)techniques were used to investigate the effect of leading-edge tubercles on the flow over low-aspect-ra...
关键词：Leading-edge tubercles Low-aspect-ratio Flow separation 
Additive manufacturing of high aspect-ratio structures with self-focusing photopolymerization
《Light(Advanced Manufacturing)》2022年第3期120-149,共30页Mingyu Yang Kavin Kowsari Nia O.Myrie Daniela Espinosa-Hoyos Anna Jagielska Seok Kim Nicholas X.Fang Krystyn J.Van Vliet 
M.Y.acknowledges the Angela Leong Fellowship Fund 2021-2022 from the Massachusetts Institute of Technology.K.K.acknowledges the financial support of the Natural Sciences and Engineering Research Council of Canada(award no.PDF-529703-2019);S.K.acknowledges the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(No.2019R1A5A8083201 and 2022R1C1C1003966)。
Photocrosslinkable polymers have been exploited to attain impressive advantages in printing freestanding,micrometer-scale,mechanically compliant features.However,a more integrated understanding of both the polymer pho...
关键词：Additive manufacturing Optical waveguide High aspect-ratio Biocompatible structures Polymer photochemistry 
An experimental and theoretical investigation of a small,high aspect-ratio,free-piston,two-stroke engine被引量：3
《Propulsion and Power Research》2020年第4期326-343,共18页Chiluwata E.Lungu Mael Disseau Daniel C.Stubbs Jechiel Jagoda David E.Scarborough 
DARPA under contract number DABT63-98-l-0009.
This paper presents a design for a novel,palm sized,high-aspect-ratio engine.To simplify fabrication and keep the device unobtrusive,a design incorporating a two-cycle engine having a flat,rectangular piston with spri...
关键词：MICRO-COMBUSTION Power generation Free-piston engine Internal combustion engine Palm power 
Experimental seismic behavior of squat shear walls with precast concrete hollow moulds被引量：4
《Earthquake Engineering and Engineering Vibration》2019年第4期871-886,共16页Han Wenlong Zhao Zuozhou Qian Jiaru Zhang Yingbao Ma Tao 
Beijing Everest Green Building Technology Ltd. for the funding
This study proposes an innovative precast shear wall system, called an EVE precast hollow shear wall structure (EVE-PHSW). Precast panels in EVE-PHSW are simultaneously precast with vertical and horizontal holes. Nonc...
关键词：precast concrete HOLLOW mould low-aspect-ratio NONCONTACT lap SPLICE prefabricated boundary element vertical and horizontal joints seismic behavior 
Gust load alleviation wind tunnel tests of a large-aspect-ratio flexible wing with piezoelectric control被引量：5
《Chinese Journal of Aeronautics》2017年第1期292-309,共18页Bi Ying Xie Changchuan An Chao Yang Chao 
supported by the National Key Research and Development Program (2016YFB 0200703)
An active control technique utilizing piezoelectric actuators to alleviate gust-response loads of a large-aspect-ratio flexible wing is investigated. Piezoelectric materials have been extensively used for active vibra...
关键词：Active control Aeroelastic wing Gust load alleviation Gust response Piezoelectric actuators Wind tunnel test 
Disordered wall arrays by photo-assisted electrochemical etching in n-type silicon被引量：1
《Journal of Semiconductors》2016年第10期88-92,共5页雷耀虎 赵志刚 郭金川 李冀 牛憨笨 
Project supported by the National Special Foundation of China for Major Science Instrument (No. 61227802);the National Natural Science Foundation of China (No. 61405120);the National Program on Key Basic Research Project (No. 2012CB825802);the China Postdoctoral Science Foundation (No. 2014M552224)
The fabrication of ordered, high aspect-ratio microstructures in silicon by use of photo-assisted electrochemical etching is an important technology, where voltage and current density are significant factors. In this ...
关键词：electrochemical etching wall array high aspect-ratio SILICON disordered wall 
Selective Area Growth of GaAs in V-Grooved Trenches on Si(001) Substrates by Aspect-Ratio Trapping
《Chinese Physics Letters》2015年第2期148-151,共4页李士颜 周旭亮 孔祥挺 李梦珂 米俊萍 边静 王伟 潘教青 
Supported by the National Science and Technology Major Project of China under Grant No 2011ZX02708
A high quality of GaAs crystal growth in nanoscale V-shape trenches on Si（O01） substrates is achieved by using the aspect-ratio trapping method. GaAs thin films are deposited via metal-organic chemical vapor deposit...
关键词：Selective Area Growth of GaAs in V-Grooved Trenches on Si Substrates by Aspect-Ratio Trapping 
RCD Large Aspect-Ratio Tokamak Equilibrium with Magnetic Islands:a Perturbed Approach
《Communications in Theoretical Physics》2013年第3期375-378,共4页F.L.Braga 
Solutions of Grad-Shafranov （CS） equation with Reversed Current Density （RCD） profiles present mag- netic islands when the magnetic flux is explicitly dependent on the poloidal angle. In this work it is shown that...
关键词：symmetry break magnetic islands Grad-Shafranov equation reversed current density 
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