Zobrazeno 1 - 10
of 158
pro vyhledávání: '"Yang Younghwan"'
Publikováno v:
Nanophotonics, Vol 11, Iss 17, Pp 4123-4133 (2022)
Tunable metasurfaces can replace conventional bulky active optical modules to realize practical flat optical devices such as lenses, LiDAR, holography, and augmented reality. However, tunable metasurfaces have generally been limited to switching betw
Externí odkaz:
https://doaj.org/article/c5ce0486952644daae4a2e6e66c1533c
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 2107-2115 (2021)
Here, we report a selective multilayer emitter for eco-friendly daytime passive radiative cooling. The types of materials and thickness of up to 10 layers of the multilayer structure are optimized by a genetic algorithm. The passive radiative cooler
Externí odkaz:
https://doaj.org/article/459e67e8be28448b990051a1a434c541
Publikováno v:
Nanophotonics, Vol 10, Iss 15, Pp 3871-3877 (2021)
This work presents a vertical hyperbolic metamaterial (vHMM) consisting of a vertically stacked metal-dielectric multilayer that operates in the visible spectrum. The vHMM is designed by exploiting the relation between negative refraction and effecti
Externí odkaz:
https://doaj.org/article/3615fc26b54b4e04a740fc4b3e3d6b63
Autor:
Jung Chunghwan, Yang Younghwan, Jang Jaehyuck, Badloe Trevon, Lee Taejun, Mun Jungho, Moon Seong-Won, Rho Junsuk
Publikováno v:
Nanophotonics, Vol 10, Iss 2, Pp 919-926 (2020)
Structural coloration using metasurfaces has been steadily researched to overcome the limitations of conventional color printing using pigments by improving the resolution, lowering the toxicity, and increasing the durability. Many metasurfaces have
Externí odkaz:
https://doaj.org/article/722e48b1a5154e99833271c04e699eb8
Autor:
Badloe, Trevon1,2 (AUTHOR), Yang, Younghwan3 (AUTHOR), Lee, Seokho3 (AUTHOR), Jeon, Dongmin3 (AUTHOR), Youn, Jaeseung3 (AUTHOR), Kim, Dong Sung3 (AUTHOR), Rho, Junsuk3,4,5,6,7 (AUTHOR) jsrho@postech.ac.kr
Publikováno v:
Advanced Science. 10/23/2024, Vol. 11 Issue 39, p1-8. 8p.
Autor:
Kim, Joohoon, Seong, Junhwa, Kim, Wonjoong, Lee, Gun-Yeal, Kim, Hongyoon, Moon, Seong-Won, Jang, Jaehyuck, Kim, Yeseul, Yang, Younghwan, Oh, Dong Kyo, Park, Chanwoong, Choi, Hojung, Jeon, Hyeongjin, Lee, Kyung-Il, Lee, Byoungho, Lee, Heon, Rho, Junsuk
Metalenses, which exhibit superior light-modulating performance with sub-micrometer-scale thicknesses, are suitable alternatives to conventional bulky refractive lenses. However, fabrication limitations, such as a high cost, low throughput, and small
Externí odkaz:
http://arxiv.org/abs/2208.12665
Autor:
So, Sunae, Kim, Joohoon, Badloe, Trevon, Lee, Chihun, Yang, Younghwan, Kang, Hyunjung, Rho, Junsuk
Metasurface-generated holography has emerged as a promising route for fully reproducing vivid scenes by manipulating the optical properties of light using ultra-compact devices. However, achieving multiple holographic images using a single metasurfac
Externí odkaz:
http://arxiv.org/abs/2207.04778
Autor:
Kim, Joohoon, Oh, Dong Kyo, Kim, Hongyoon, Yoon, Gwanho, Jung, Chunghwan, Kim, Jae Kyung, Badloe, Trevon, Kim, Seokwoo, Yang, Younghwan, Lee, Jihae, Ko, Byoungsu, Ok, Jong G., Rho, Junsuk
Metasurface holography, the reconstruction of holographic images by modulating the spatial amplitude and phase of light using metasurfaces, has emerged as a next-generation display technology. However, conventional fabrication techniques used to real
Externí odkaz:
http://arxiv.org/abs/2109.01141
Hyperbolic metamaterials, horizontally stacked metal and dielectric multilayer, have recently been studied as a platform to observe optical spin Hall effect. However, the large optical spin Hall effect in the horizontal hyperbolic metamaterials accom
Externí odkaz:
http://arxiv.org/abs/1906.10309
Publikováno v:
Journal of Applied Physics; 3/7/2024, Vol. 135 Issue 9, p1-10, 10p