Zobrazeno 1 - 10
of 364
pro vyhledávání: '"Wang, Xuchen"'
Autor:
Ma, Xin, Zhu, Puchen, Li, Xiao, Zheng, Xiaoyin, Zhou, Jianshu, Wang, Xuchen, Au, Kwok Wai Samuel
Depth position highly affects lens distortion, especially in close-range photography, which limits the measurement accuracy of existing stereo vision systems. Moreover, traditional depth-dependent distortion models and their calibration methods have
Externí odkaz:
http://arxiv.org/abs/2404.19242
In this paper, we present a general theory of aperiodic subwavelength arrays for controlling electromagnetic waves. The considered platform is formed by an array of electrically small loaded scatterers above a ground plane. While the array is geometr
Externí odkaz:
http://arxiv.org/abs/2404.07608
In the context of electromagnetic absorption, it is obvious that for an infinite planar periodic structure illuminated by a plane wave, the maximum attainable absorptance, i.e., perfect absorption, is theoretically limited to 100% of the incident pow
Externí odkaz:
http://arxiv.org/abs/2402.11971
Autor:
Zhu, Juan-Feng, Nussupbekov, Ayan, Zhou, Wenjie, Song, Zicheng, Wang, Xuchen, Zhang, Zi-Wen, Du, Chao-Hai, Bai, Ping, Png, Ching Eng, Qiu, Cheng-Wei, Wu, Lin
Smith-Purcell radiation (SPR) occurs when an electron skims above a spatial grating, but the fixed momentum compensation from the static grating imposes limitations on the emission wavelength. It has been discovered that a temporally periodic system
Externí odkaz:
http://arxiv.org/abs/2311.07381
Autor:
Li, Yongming, Ma, Xikui, Wang, Xuchen, Ptitcyn, Grigorii, Movahediqomi, Mostafa, Tretyakov, Sergei A.
Realizing continuous sweeping of perfect anomalous reflection in a wide angular range has become a technical challenge. This challenge cannot be overcome by the conventional aperiodic reflectarrays and periodic metasurfaces or metagratings. In this p
Externí odkaz:
http://arxiv.org/abs/2303.05411
Engineering and optimization of wireless propagation channels will be one of the key elements of future communication technologies. Metasurfaces may offer a wide spectrum of functionalities for passive and tunable reflecting devices, overcoming funda
Externí odkaz:
http://arxiv.org/abs/2302.07313
Conventional coherent absorption occurs only when two incident beams exhibit mirror symmetry with respect to the absorbing surface, i.e., the two beams have the same incident angles, phases, and amplitudes. In this work, we propose a more general met
Externí odkaz:
http://arxiv.org/abs/2301.02852
Autor:
Wang, Xuchen, Mirmoosa, Mohammad Sajjad, Asadchy, Viktar S., Rockstuhl, Carsten, Fan, Shanhui, Tretyakov, Sergei A.
Publikováno v:
Vol 9, Issue 14, pages 1-7, 2023
Photonic time crystals are artificial materials whose electromagnetic properties are uniform in space but periodically vary in time. The synthesis of such materials and experimental observation of their physics remain very challenging due to the stri
Externí odkaz:
http://arxiv.org/abs/2208.07231
In this paper, we investigate the scattering of surface waves on reactive impedance boundaries when the surface impedance undergoes a sudden change in time. We report three exotic wave phenomena. First, it is shown that by switching the value of the
Externí odkaz:
http://arxiv.org/abs/2208.02047
Autor:
Wang, Xuchen, Tretyakov, Sergei A.
Waveguide characterization of dielectric materials is a convenient and broadband approach for measuring dielectric constant. In conventional microwave measurements, material samples are usually mechanically shaped to fit the waveguide opening and mea
Externí odkaz:
http://arxiv.org/abs/2109.00638