안녕하세요.
9월 25일 진행되는 물리학과 세미나 안내드립니다.
일시: 2025.09.25.(목) 16:30-17:30
장소: 베어드홀 1층, 01103호
연사: 김경호 교수(경희대, 응용물리학과)
제목: Infrared plasmonic nanoresonators with semiconductor materials
초록:
The mid-infrared (MIR) light carries rich information of light-matter interactions including molecular vibrational absorption, surface phonon-polariton resonances, and blackbody thermal emission. By exploiting MIR light, one can develop various applications from molecular and bio-sensing platforms for health and environmental monitoring to terrestrial and space technologies.
In this talk, we present the rational design of subwavelength nanophotonic systems using graphene and silicon nanowire with mid-infrared localized surface plasmon resonance (LSPR). LSPRs are desirable for strong MIR light-mattering interaction in a subwavelength scale, allowing for the confinement of micron-scale wavelengths into nanometer-scale objects. We expect LSPR in artificial nanomaterials to allow us to develop new optical sensor devices in the mid-infrared wavelength regime with extremely small size compared to the wavelength.