BEAMS

作品数：400被引量：496H指数：8
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Free vibration and transient response of double curved beams connected by intermediate straight beams
《Applied Mathematics and Mechanics(English Edition)》2025年第1期37-62,共26页R.A.JAFARI-TALOOKOLAEI H.GHANDVAR E.JUMAEV S.KHATIR T.CUONG-LE 
This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FG...
关键词：double curved beam vibration analysis intermediate straight beam functionally graded porous(FGP)material finite element method 
The cLVSM:A Novel Compact Linear Variable Stiffness Mechanism Based on Circular Beams
《Chinese Journal of Mechanical Engineering》2024年第6期414-428,共15页Yixin Shao Yufeng Zhou Di Shi Yanggang Feng Xilun Ding Wuxiang Zhang 
Supported by National Key R&D Program of China(Grant No.2022YFB4701200);Ningbo Municipal Key Projects of Science and Technology Innovation 2025 Plan(Grant No.2022Z070);National Natural Science Foundation of China(Grant No.52205004).
Variable stiffness mechanisms(VSMs)are a class of compliant mechanisms that can adjust their intrinsic stiffness,which promises to be beneficial in applications needed to interact with the environment,such as collabor...
关键词：Variable stiffness Compliant mechanism Stiffness modeling Circular beam Screw theory 
Metasurfaces for multiplexing pencil-like beams with longitudinally inhomogeneous versatile polarization states and polarization-evolutive imaging
《Photonics Research》2024年第12期3012-3026,共15页FENG TANG TENG ZHANG ZHIYU TAN XIAOFEI ZANG YIMING ZHU SONGLIN ZHUANG 
National Natural Science Foundation of China(61871268,61988102,62271320);Shuguang Program of Shanghai Education Commission(19SG44);Science and Technology Commission of Shanghai Municipality(21S31907400,22JC1400200).
The manipulation of polarization in the longitudinal direction using metasurfaces introduces a new dimension for controlling polarization states.Previous research has primarily focused on creating a single beam with a...
关键词：polarized VERSATILE LINEARLY 
High-dimensional Poincarébeams generated through cascaded metasurfaces for high-security optical encryption被引量：1
《PhotoniX》2024年第1期499-511,共13页Jitao Ji Chen Chen Jiacheng Sun Xin Ye Zhizhang Wang Jian Li Junyi Wang Wange Song Chunyu Huang Kai Qiu Shining Zhu Tao Li 
provided by National Key Research and Development Program of China(2022YFA1404301);National Natural Science Foundation of China(Nos.62325504,62305149,92250304,62288101);Dengfeng Project B of Nanjing University;the micro-fabrication center of the National Laboratory of Solid State Microstructures(NLSSM)for technique support。
Optical encryption plays an increasingly important role in the field of information security owing to its parallel processing capability and low power consumption.Employing the ultrathin metasurfaces in optical encryp...
关键词：Poincare beams Cascaded metasurfaces Optical encryption 
Improving millimeter-wave imaging quality using the vortex phase method
《Defence Technology（防务技术）》2024年第9期193-202,共10页Nairui Hu Feng Qi Yelong Wang Zhaoyang Liu Pengxiang Liu Weifan Li 
Science,Technology and Innovation Project of Xiongan New Area (Grant No.2022XAGG0181);LiaoNing Revitalization Talents Program (Grant No.XLYC2007074);Shenyang Young and Middle-aged Science and Technology Innovation Talent Support Program (Grant No.RC220523);Natural Science Foundation of Liaoning Province of China (Grant Nos.2022-YGJC-03 and 2022-MS-034)to provide fund for conducting experiments。
This paper investigates a new vortex wave imaging approach to improve the imaging quality of small metal targets of size less than 1.5 mm.Antennas with different spiral phase plates are designed to efficiently transmi...
关键词：Orbital angular momentums(OAMs)beams Focal plane imaging Spiral phase plates(SPPs) Vortex spectrum 
Generation of multi-freedom controllable helical beam through high-order Bessel beams[Invited]被引量：1
《Chinese Optics Letters》2024年第9期31-36,共6页Xiaoyun Jiang Minglie Hu Chen Xie 
supported by the National Natural Science Foundation of China(Nos.62275191 and 62227821).
In this Letter,we propose a scheme to generate helical optical fields with multi-freedom controllable features.High-quality helical lobes with adjustable radii,chirality,and lobe numbers can be generated by tuning the...
关键词：helical beams high-order Bessel beams multi-freedom manipulation 
New Insight into the Flexoelectricity in the View of Mechanics of Materials:Prismatic Beams Subjected to Bending被引量：1
《Acta Mechanica Solida Sinica》2024年第4期555-569,共15页Xu Yang Lingling Chen Shengyou Yang 
supported by the National Natural Science Foundation of China(12202249);the Fundamental Research Funds for the Central Universities of China(2024JCG001).
Flexoelectricity is a fascinating electromechanical phenomenon that occurs in non-homogeneously deformed dielectric materials.Unlike piezoelectricity,the flexoelectric effect is highly dependent on both the material s...
关键词：BENDING FORMULATION dielectric 
Non-diffracting integer-order and half-integer-order carpet beams obtained by even-type sinusoidal amplitude radial gratings
《Chinese Optics Letters》2024年第7期86-92,共7页Yefeng Liu Huiqing Li Rijian Chen Changjiang Fan Yile Shi Zhijun Ren 
supported by the National Natural Science Foundation of China(Nos.11974314 and 11674288).
In this work,we introduce a kind of new structured radial grating,which is named the even-type sinusoidal amplitude radial(ETASR)grating.Based on diffraction theory and the principle of stationary phase,a comprehensiv...
关键词：even-type sinusoidal amplitude radial gratings principle of stationary phase non-diffracting integer-order carpet beams non-diffracting half-integer-order carpet beams 
Simultaneous sorting of arbitrary vector structured beams with spin-multiplexed diffractive metasurfaces
《Advanced Photonics Nexus》2024年第3期89-96,共8页Xiaoxin Li Rui Feng Fangkui Sun Yanxia Zhang Qi Jia Donghua Tang Bojian Shi Hang Li Yanyu Gao Wenya Gao Yongyin Cao Weiqiang Ding 
supported by the National Natural Science Foundation of China(Grant No.12274105);the Heilongjiang Natural Science Funds for Distinguished Young Scholars(Grant No.JQ2022A001);the Fundamental Research Funds for the Central Universities(Grant No.HIT.OCEF.2021020);the Joint Guidance Project of the Natural Science Foundation of Heilongjiang Province(Grant No.LH2023A006).
Vector structured beams(VSBs)offer infinite eigenstates and open up new possibilities for highcapacity optical and quantum communications by the multiplexing of the states.Therefore,the sorting and measuring of VSBs a...
关键词：vector structured beams diffractive optical neural networks mode sorting polarization-multiplexed metasurfaces. 
3D nano-printed geometric phase metasurfaces for generating accelerating beams with complex amplitude manipulation被引量：1
《Science China(Physics,Mechanics & Astronomy)》2024年第6期86-95,共10页Tianchen Tang Saima Kanwal Yongzheng Lu Yuelong Li Shuangbao Wu Lei Chen Ziheng Qian Zhouyu Xie Jing Wen Dawei Zhang 
supported by the National Natural Science Foundation of China(Grant No.62175153);the National Key R&D Program of China(Grant No.2018YFA0701800)。
Metasurface,a forefront in emerging optical devices,has demonstrated remarkable potential for complex amplitude manipulation of light beams.However,prevailing approaches face challenges in spatial resolution and compl...
关键词：metasurface complex amplitude manipulation geometric phase 3D nano-printing Airy beam accelerating parabolic beam 
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