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pro vyhledávání: '"Joonkyo Jung"'
Autor:
Ji-Young Jeong, Je-Ryung Lee, Hyeonjin Park, Joonkyo Jung, Doo-Sun Choi, Eun-chae Jeon, Jonghwa Shin, Jun Sae Han, Tae-Jin Je
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract Microwave absorbers using conductive ink are generally fabricated by printing an array pattern on a substrate to generate electromagnetic fields. However, screen printing processes are difficult to vary the sheet resistance values for differ
Externí odkaz:
https://doaj.org/article/ee28a9b9084f4ee699862156407c6b75
Publikováno v:
Nanophotonics.
Optical metasurfaces have great potential to overcome the functional limitations of conventional optical devices. In addition to polarization- or wavelength-multiplexed metasurfaces, angle-multiplexed metasurfaces can provide new degrees of freedom,
Autor:
Taeyong Chang, Joonkyo Jung, Sang‐Hyeon Nam, Hyeonhee Kim, Jong Uk Kim, Nayoung Kim, Suwan Jeon, Minsung Heo, Jonghwa Shin
Publikováno v:
Advanced materials (Deerfield Beach, Fla.). 34(44)
Recent advances in metasurfaces and optical nanostructures have enabled complex control of incident light with optically thin devices. However, it has thus far been unclear whether it is possible to achieve complete linear control of coherent light t
Publikováno v:
Nanophotonics, Vol 9, Iss 10, Pp 3165-3196 (2020)
Metamaterials can possess extraordinary properties not readily available in nature. While most of the early metamaterials had narrow frequency bandwidth of operation, many recent works have focused on how to implement exotic properties and functions
Autor:
Jun Sae Han, Hyeonjin Park, Ji-Young Jeong, Joonkyo Jung, Eun-Ji Gwak, Eun-chae Jeon, Tae-Jin Je, Jonghwa Shin, Doo-Sun Choi
Publikováno v:
Optics Express. 30:29760
The manufacturing process for an ultrawide flexible microwave absorbing meta-surface was developed and optimized experimentally. The developed replication process consists of four main steps to demonstrate double-square loop array meta-structures: (1
Autor:
Doo-Sun Choi, Jonghwa Shin, Eun-chae Jeon, Tae-Jin Je, Joonkyo Jung, Hyeonjin Park, Ji-Young Jeong, Je-Ryung Lee, Jun Sae Han
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Microwave absorbers using conductive ink are generally fabricated by printing an array pattern on a substrate to generate electromagnetic fields. However, screen printing processes are difficult to vary the sheet resistance values for different regio
Autor:
Joonkyo Jung, Arthur Baucour, Minsung Heo, Taeyong Chang, Myungjoon Kim, Jonghwa Shin, Na Young Kim
Publikováno v:
Optics express. 28(15)
In optical nanostructures used as artificial resonance-based color filters, there is unfortunate universal trade-off between spectral sharpness and angular tolerance as well as maximum extinction. We rigorously derive the maximum performance bounds o
Autor:
Seung Jun Lee, Do Kyung Kim, Joonkyo Jung, Jonghwa Shin, Jin-Woo Park, Jung Hoon Kong, Ho Jin Ma
Publikováno v:
Journal of Applied Physics. 126:094101
This paper describes a new approach, based on the Mie theory, to measure the dielectric properties of lossless materials at temperatures greater than 1500 °C. For the reliable operation of microwave transmitting materials in harsh environments, it i