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Artykuły w czasopismach na temat "Active metasurface"
Timpu, Flavia, Helena Weigand, Fabian Kaufmann, Felix U. Richter, Viola-Valentina Vogler-Neuling, Artemios Karvounis i Rachel Grange. "Towards active electro-optic lithium niobate metasurfaces". EPJ Web of Conferences 238 (2020): 05003. http://dx.doi.org/10.1051/epjconf/202023805003.
Pełny tekst źródłaCurwen, Christopher A., Mohammad Shahili, Sadhvikas J. Addamane, John L. Reno, Boris S. Karasik, Benjamin S. Williams i Jonathan H. Kawamura. "Measurement of amplification and absorption of a THz quantum-cascade metasurface free-space amplifier". AIP Advances 12, nr 11 (1.11.2022): 115205. http://dx.doi.org/10.1063/5.0122154.
Pełny tekst źródłaLin, Bizun, Jingru Li, Wei Lin i Qingfen Ma. "Active Tunable Elastic Metasurface for Abnormal Flexural Wave Transmission". Applied Sciences 14, nr 7 (24.03.2024): 2717. http://dx.doi.org/10.3390/app14072717.
Pełny tekst źródłaMeng, Qi, Xingqiao Chen, Wei Xu, Zhihong Zhu, Xiaodong Yuan i Jianfa Zhang. "High Q Resonant Sb2S3-Lithium Niobate Metasurface for Active Nanophotonics". Nanomaterials 11, nr 9 (13.09.2021): 2373. http://dx.doi.org/10.3390/nano11092373.
Pełny tekst źródłaMa, Qian, Qiao Ru Hong, Xinxin Gao, Qiang Xiao, Lei Chen i Tie Jun Cui. "Highly integrated programmable metasurface for multifunctions in reflections and transmissions". APL Materials 10, nr 6 (1.06.2022): 061113. http://dx.doi.org/10.1063/5.0093424.
Pełny tekst źródłaEffah, Elijah, Ezekiel Edward Nettey-Oppong, Ahmed Ali, Kyung Min Byun i Seung Ho Choi. "Tunable Metasurfaces Based on Mechanically Deformable Polymeric Substrates". Photonics 10, nr 2 (23.01.2023): 119. http://dx.doi.org/10.3390/photonics10020119.
Pełny tekst źródłaYang, Jingyi, Sudip Gurung, Subhajit Bej, Peinan Ni i Ho Wai Howard Lee. "Active optical metasurfaces: comprehensive review on physics, mechanisms, and prospective applications". Reports on Progress in Physics 85, nr 3 (1.03.2022): 036101. http://dx.doi.org/10.1088/1361-6633/ac2aaf.
Pełny tekst źródłaLi, Yuan, He Ma, Yu Wang, Jun Ding, Limei Qi, Yulan Fu, Ran Ning, Lu Rong, Dayong Wang i Xinping Zhang. "Electrically driven active VO2/MXene metasurface for the terahertz modulation". Applied Physics Letters 121, nr 24 (12.12.2022): 241902. http://dx.doi.org/10.1063/5.0129197.
Pełny tekst źródłaZhou, Hongqiang, Yongtian Wang, Xiaowei Li, Qing Wang, Qunshuo Wei, Guangzhou Geng i Lingling Huang. "Switchable active phase modulation and holography encryption based on hybrid metasurfaces". Nanophotonics 9, nr 4 (11.03.2020): 905–12. http://dx.doi.org/10.1515/nanoph-2019-0519.
Pełny tekst źródłaChang, Shengyuan, Xuexue Guo i Xingjie Ni. "Optical Metasurfaces: Progress and Applications". Annual Review of Materials Research 48, nr 1 (lipiec 2018): 279–302. http://dx.doi.org/10.1146/annurev-matsci-070616-124220.
Pełny tekst źródłaRozprawy doktorskie na temat "Active metasurface"
Mello, Rafael Gonçalves Licursi de. "Active and passive metasurfaces : methodology for the design of a low profile, beam-steerable, multiband, and wideband antenna". Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAT025.
Pełny tekst źródłaMetasurfaces are artificial engineered materials that can be combined with traditional microwave components in ground-breaking solutions. The research on the use of metasurfaces in the roles of antenna reflector and/or superstrate considerably increased mainly from the beginning of the 2020s, because of their innovative functionalities in line with the ultimate Telecommunication trends. In this thesis, methodologies for the use of passive and active metasurfaces in the design of antennas are presented. A first methodology which exploits both the near-perfect electric conductor (PEC) and near-perfect magnetic conductor (PMC) behaviors of a dual-band artificial magnetic conductor (AMC) is used to design a low-profile, multiband, directive antenna. This methodology is validated with a prototype suitable for the European standards of 4G/5G and Wi-Fi 2.4/5/6E, operating within the following bands: 2.40–2.70 GHz, 3.40–3.80 GHz, 5.17–5.83 GHz, and 5.93–6.45 GHz. Additionally, a methodology to handle the Fabry-Pérot mechanism in an antenna composed of a grooved rounded-edge bow-tie, a passive dual-band AMC, and an active multiband Huygens metasurface is presented. This methodology is validated with the design of a multiband, directive, low-profile, antenna that performs an independent beam-steering in only one of the operating frequency bands. Through the controlling of the bias voltages over four columns of varactors in the reconfigurable, multiband Huygens metasurface, the beam may be dynamically steered in ±51°, in a continuous manner, in a frequency range lying inside the European 5G frequency range (from 3.50 to 3.65 GHz. All at once, the radiation patterns concerning the 4G and Wi-Fi 2.4/5/6E keep practically unaffected
Duran, Venegas Juan Antonio. "Reconfigurable Metasurfaces for Beam Scanning Planar Antennas". Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0102.
Pełny tekst źródłaWe are studying the implementation of 'Scanning Antenna dedicated to the applications of satellite communications geostationary. The structures developed are suitable for to be on board an airplane or a train. The architecture of the antenna developed consists of a double linear network in two transverse dimmensions. The scan in each network is provided by the lines coplanar to metamaterials controlled by varactor. We porposons of new methods characterization of discontinuities coplanar online for the line design. In addition, a energy harvesting system has be designed to feed radiating elements and tested with patch different antennas. Finally, we are considering co-integration radiating structures and CRLH lines as well as control electronic by the diodes
Walter, Felicitas [Verfasser]. "Optical properties and encoding of information of nonlinear and active plasmonic metasurfaces / Felicitas Walter". Paderborn : Universitätsbibliothek, 2018. http://d-nb.info/1171897685/34.
Pełny tekst źródłaChen, Jie, i 陳婕. "Active gradient-phase metasurface based on phase-change material Ge2Sb2Te5". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/51801850616860068037.
Pełny tekst źródła國立臺灣大學
物理研究所
103
Metamaterial is a hot topic in these years which is applied to the researches of clocking, negative refraction, relying on its non-existing proprieties in nature. Metasurface is an important part connecting metamaterial with metadevice, contributing to a great many of applications, such as flat lens, metahologram and some meta-optical-component. Recently, Phase-change materials are applied to active metamaterial due to their distinctions in optical constant between crystal state and amorphous state. Ge2Sb2Te5 (GST) alloy is widely used in optical data storage, phase change memory and nanolithography owing to its nature of stability, quick response (femtosecond order) to external stimuli and dramatical difference in optical constant and electrical resistance between two phases. We present an active gradient-phase metasurface design based on algorithms of Finite Element Method (FEM) and Finite-Difference Time-Domain (FDTD). An active gradient-phase metasurface made of phase-change material exhibiting normal or abnormal reflection working at communication frequency (around 1550 nm) is achieved. When GST alloy nanostructures are all in crystal state, there is a normal reflective phenomenon following traditional laws. Under an external stimuli, an anomalous reflected beam can be detected in the angle of 19 or 40 degree off the traditional light path. The difference of the geometry and phase-state leads to a distinct phase delay. With a specific arrangement, the wavefront can be reshaped and the metasurfce give rise to an abnormal reflected phenomena. The phase-state of GST rods can be changed to attain a period variation of phase modulation by fs-laser process. In a word, there is a three-level phase modulation when elements are partly in amorphous and partly in crystal state. Here, we achieve a three-level phase modulation only relying on two different geometry by introducing phase-state of PCMs. Meanwhile, an active phase-gradient metasurface is realized to improve tunability of metamaterial which is potential for active metadevice in optical communication process. Key words: Metasurface, Phase-change materials, Active modulation
Kwon, Hyounghan. "Dielectric Metasurfaces for Integrated Imaging Devices and Active Optical Elements". Thesis, 2021.
Znajdź pełny tekst źródłaOptical dielectric metasurfaces have shown great advances in the last two decades and become promising candidates for next-generation free-space optical elements. In addition to their compatibility with scalable semiconductor fabrication technology, metasurfaces have provided new and efficient ways to manipulate diverse characteristics of light. In this thesis, we demonstrate the potential of dielectric metastructures in the realization of compact imaging devices, reconfigurable optical elements, and multi-layer inverse-designed metasurfaces. With the metasurfaces’ extreme capability to simultaneously control phase and polarization, we first showcase their potential toward optical field imaging applications. In this regard, we demonstrate a system of dielectric metasurfaces and designed random metasurfaces for single-shot phase gradient microscopes and computational complex field imaging system, respectively. Then, we propose nano-electromechanically tunable resonant dielectric metasurfaces as a general platform for active metasurfaces. For example, we demonstrate two different types of the phase and amplitude modulators. While one utilizes resonant eigenmodes in the lattice such as leaky guided mode resonances and bound-states in the continuum modes, the other is based on the high-Q Mie resonances in the dielectric nanostructures where symmetry is broken. In addition to the modulation of the phase and amplitude, we also show tuning of strong chiroptical responses in dielectric chiral metasurfaces. Next, we experimentally demonstrate inverse-designed multi-layer metasurfaces. Not only do they provide increased degree of freedom in the design space, but also overcome limits of conventional design methods of the metasurfaces. Finally, we summarize the presented works and conclude this thesis with a brief outlook on what aspects of the metasurfaces can be important for their real-world applications in the future and what challenges and opportunities remain.
Xie, Zu-Wen, i 謝祖文. "Active plasmonic color filters of aluminum metasurfaces integrated with liquid crystals". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/j692j2.
Pełny tekst źródła國立交通大學
照明與能源光電研究所
106
Designing color pixels using plasmonic nanostructures and metasurfaces has become a luring area of research in recent years. Here, we experimentally demonstrated the voltage tunability of a dynamic plasmonic color filter by using an aluminum grating integrated with the nematic liquid crystal (LC). Along with a typical substrate coated with rubbed polyimide film, the aluminum grating itself serves as a molecular alignment layer to form a twisted LC cell. This hybrid structure allows electrically controlled transmission and reflection color by applying a voltage. A significant spectral tunability of such a device has been demonstrated by applying a small voltage from 0 to 4 Vrms.
Chen, Pai-Yen. "Nonlinear, passive and active inclusions to tailor the wave interaction in metamaterials and metasurfaces". Thesis, 2013. http://hdl.handle.net/2152/23291.
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Części książek na temat "Active metasurface"
Zhao, Jiajun. "Manipulating Acoustic Focus with an Active Metasurface Piezoelectric Transducer". W Manipulation of Sound Properties by Acoustic Metasurface and Metastructure, 31–41. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2125-1_4.
Pełny tekst źródłaXu, He-Xiu, Shiwei Tang, Tong Cai, Shulin Sun, Qiong He i Lei Zhou. "Linearly Polarized Active Multifunctional Metasurfaces". W Multifunctional Metasurfaces, 93–121. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-031-02390-3_5.
Pełny tekst źródłaMichael Wu, Chung-Tse, i Pai-Yen Chen. "Low-Profile Metamaterial-Based Adaptative Beamforming Techniques". W Modern Printed-Circuit Antennas. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.90012.
Pełny tekst źródłaSharma, Anuj Kumar, i Vipul Sharma. "Active and Passive Metamaterials and Metasurfaces". W Advances in Wireless Technologies and Telecommunication, 297–319. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-8287-2.ch012.
Pełny tekst źródłaMalek, Stephanie C., Adam C. Overvig, Sajan Shrestha i Nanfang Yu. "Active nonlocal metasurfaces". W Frontiers in Optics and Photonics, 673–84. De Gruyter, 2021. http://dx.doi.org/10.1515/9783110710687-053.
Pełny tekst źródłaKar, Subal. "Matamaterial-inspired passive components, antennas and active devices". W Metamaterials and Metasurfaces, 3–1. IOP Publishing, 2023. http://dx.doi.org/10.1088/978-0-7503-5532-2ch3.
Pełny tekst źródłaStreszczenia konferencji na temat "Active metasurface"
Felbacq, Didier, Emmanuel Rousseau i Emmanuel Kling. "Topological excitations of a quantum metasurface". W Active Photonic Platforms XI, redaktorzy Ganapathi S. Subramania i Stavroula Foteinopoulou. SPIE, 2019. http://dx.doi.org/10.1117/12.2528770.
Pełny tekst źródłaChen, H. T. "Active terahertz metasurface devices". W 2016 IEEE International Electron Devices Meeting (IEDM). IEEE, 2016. http://dx.doi.org/10.1109/iedm.2016.7838508.
Pełny tekst źródłaZhang, Yan, Guocui Wang i Xinke Wang. "Active Terahertz Metasurface Devices". W 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, 2023. http://dx.doi.org/10.1109/irmmw-thz57677.2023.10299255.
Pełny tekst źródłaFelbacq, Didier, i Emmanuel Rousseau. "Strong light-matter coupling in a quantum metasurface". W Active Photonic Platforms X, redaktorzy Ganapathi S. Subramania i Stavroula Foteinopoulou. SPIE, 2018. http://dx.doi.org/10.1117/12.2320277.
Pełny tekst źródłaKafaie Shirmanesh, Ghazaleh, Ruzan Sokhoyan, Pin Chieh Wu i Harry A. Atwater. "Reconfigurable beam steering metasurface at telecommunication wavelengths (Conference Presentation)". W Active Photonic Platforms X, redaktorzy Ganapathi S. Subramania i Stavroula Foteinopoulou. SPIE, 2018. http://dx.doi.org/10.1117/12.2320835.
Pełny tekst źródłaZou, Chengjun, Purushottam Poudel, Katsuya Tanaka, Alexander Minovich, Thomas Pertsch, Felix H. Schacher i Isabelle Staude. "Multiresponsive dielectric metasurfaces with light-and temperature-responsive copolymers". W CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.fm1b.6.
Pełny tekst źródłaXu, HongXin, i Yong Jin Zhou. "Wideband transmission/absorption active metasurface". W 2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium. IEEE, 2021. http://dx.doi.org/10.23919/aces-china52398.2021.9581354.
Pełny tekst źródłaYang, Guoce, Mengyun Wang, June Sang Lee, Nikolaos Farmakidis i Harish Bhaskaran. "Reconfigurable nonlocal metasurface based on phase change materials". W Active Photonic Platforms (APP) 2023, redaktorzy Ganapathi S. Subramania i Stavroula Foteinopoulou. SPIE, 2023. http://dx.doi.org/10.1117/12.2675688.
Pełny tekst źródłaWu, Pin Chieh. "Flat optics with nanophotonic metasurface". W JSAP-OSA Joint Symposia. Washington, D.C.: Optica Publishing Group, 2019. http://dx.doi.org/10.1364/jsap.2019.18p_e208_1.
Pełny tekst źródłaSmalley, Joseph S., Xuexin Ren, Jeong Yub Lee, Xiang Zhang, Sui Yang, Yuan Wang, Woong Ko i in. "Subwavelength pixelated CMOS color sensors based on Anti-Hermitian metasurface". W Active Photonic Platforms XIII, redaktorzy Ganapathi S. Subramania i Stavroula Foteinopoulou. SPIE, 2021. http://dx.doi.org/10.1117/12.2595013.
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