Zobrazeno 1 - 10
of 883
pro vyhledávání: '"Park Q"'
Publikováno v:
Nanophotonics, Vol 13, Iss 8, Pp 1197-1199 (2024)
Externí odkaz:
https://doaj.org/article/c2cfbbd916064deab2e4242b5578f303
Autor:
Kim Myeongjin, Park Q-Han
Publikováno v:
Nanophotonics, Vol 13, Iss 8, Pp 1459-1466 (2024)
Efficient energy transfer is crucial in electromagnetic communication. Therefore, producing a waveguide coupler that achieves broadband, nonreflective transmission is a challenging task. With the advancement of silicon-based integrated photonic circu
Externí odkaz:
https://doaj.org/article/1223e5505a074fb388c3f99b004d8158
Publikováno v:
Nanophotonics, Vol 12, Iss 13, Pp 2415-2423 (2023)
We propose a metasurface antenna capable of real-time holographic beam steering. An array of reconfigurable dipoles can generate on-demand far-field patterns of radiation through the specific encoding of meta-atomic states i.e., the configuration of
Externí odkaz:
https://doaj.org/article/652b4ea90f49462689f3dcfba92fe180
Autor:
Han WonHeum, Park Q-Han
Publikováno v:
Nanophotonics, Vol 12, Iss 13, Pp 2443-2449 (2023)
A broadband absorber that utilizes a dispersive metamaterial and covers the entire microwave X-band (8–12 GHz) is proposed in the present study. An ideal absorber attached to the surface of a perfect electric conductor requires the permittivity of
Externí odkaz:
https://doaj.org/article/0fbef859f4b845f5b81362f43fba1f54
Publikováno v:
Nanophotonics, Vol 12, Iss 13, Pp 2241-2243 (2023)
Externí odkaz:
https://doaj.org/article/d884bdcf1ded4adaadcb251e222a00db
Autor:
Yoo SeokJae, Park Q-Han
Publikováno v:
Nanophotonics, Vol 11, Iss 12, Pp 2811-2825 (2022)
Discovery of low-dimensional materials has been of great interest in physics and material science. Optical permittivity is an optical fingerprint of material electronic structures, and thus it is an important parameter in the study of the properties
Externí odkaz:
https://doaj.org/article/c02f323d09ba47b784345940d2ec9529
Autor:
Im Ku, Park Q-Han
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 2191-2198 (2022)
The mechanism of the perfect anti-reflection of acoustic waves, regardless of frequency and incident angle, is presented. We show that reflections at a planar interface between two different acoustic media can be removed by adding a nonlocal metamate
Externí odkaz:
https://doaj.org/article/1730962cf8864f0296f48dbd0a9ebd4e
Autor:
Kim TaeHyung, Park Q-Han
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 1897-1904 (2022)
Nanoscale particles and structures hold promise in circular dichroism (CD) spectroscopy for overcoming the weakness of molecular CD signals. Significant effort have been made to characterize nanophotonic CD enhancement and find efficient ways to boos
Externí odkaz:
https://doaj.org/article/cf37aec2b03249e58d12c96649684262
Publikováno v:
Nanophotonics 12.13 (2023): 2415-2423
We propose a metasurface antenna capable of real time holographic beam steering. An array of reconfigurable dipoeles can generate on demand far field patterns of radiation through the specific encoding of meta atomic states. i.e., the configuration o
Externí odkaz:
http://arxiv.org/abs/2406.14585
Publikováno v:
Nanophotonics, Vol 8, Iss 6, Pp 1063-1069 (2019)
We propose a homogenization scheme for metamaterials that utilizes causality to determine their effective parameters. By requiring the Kramers-Kronig causality condition in the homogenization of metamaterials, we show that the effective parameters ca
Externí odkaz:
https://doaj.org/article/384fde51272b40e99cb71728f6ffdfe0