Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Jong Ho Choe"'
Publikováno v:
ACS Applied Materials & Interfaces. 14:38459-38470
To prevent the ongoing spread of the highly infectious severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), accurate and early detection based on a rapid, ultrasensitive, and highly reliable sensing method is crucially important. Here, we pr
Publikováno v:
Nanophotonics.
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
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
Publikováno v:
Optics & Laser Technology. 106:76-86
Graphene is a one-atom thick carbon film packed in a honeycomb structure, and because it has extraordinary optoelectronic properties, it has attracted a great deal of attention in the field of photonics. Graphene-based plasmonic photonic devices have
Autor:
Jae Hun Kim, Young June Kim, Youngmo Jung, Jong-Ho Choe, Robert H. Blick, Sukang Bae, Joo-Hiuk Son, Chaehyun Lim, Sang-Hun Lee, Jaebin Choi, Minah Seo, Chulki Kim
Publikováno v:
Carbon. 130:525-531
The charge transfer dynamics regarding an intimate contact between graphene and single-stranded deoxyribonucleic acid (ssDNA) is investigated from DC to the THz-regime. A graphene field-effect transistor (G-FET) is immersed in ssDNA solutions where t
Publikováno v:
Conference on Lasers and Electro-Optics.
Publikováno v:
Advanced Functional Materials. 26:5203-5210
This paper reports a rational and facile approach to fabricating arrays of 3D annular nanostructures with tunable layers by utilizing the diffraction and interference of UV light. Based on discretized Fresnel bright spots and standing waves formed wi
Publikováno v:
Journal of the Korean Physical Society. 68:462-466
The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction e
Publikováno v:
Journal of Applied Physics; 9/7/2015, Vol. 118 Issue 9, p093104-1-093104-9, 9p, 2 Charts, 6 Graphs
Publikováno v:
Sensors and Actuators B: Chemical. 310:127841
We report that single-stranded deoxyribonucleic acids (ssDNAs) at very low concentrations can be detected using graphene-combined nano-slot-based terahertz (THz) resonance. A combination of the resonant structure and tuned electro-optical properties