Center for Molecular Spectroscopy and Dynamics

IBS CMSD Seminar

Jongwon Lee

February 13(Tue) - February 13(Tue), 2024

16:00-17:00

Seminar Room 116

■        ABSTRACT

Metamaterials and metasurfaces can be employed to control the light-matter interaction properties of electromagnetic waves in unprecedented ways. These artificially created structures have the capability to exhibit novel functionalities that are not naturally occurring. In a different context, surface-enhanced infrared absorption (SEIRA) spectroscopy has been proposed to directly enhance infrared fingerprint vibrations, overcoming the limitations of detecting minute amounts of analyte molecules based on fundamental Fourier transform infrared spectroscopy. In this presentation, I will introduce novel SEIRA sensing platforms based on plasmonic metamaterials designed for the ultrasensitive detection of monolayer molecules and proteins. We have theoretically investigated and experimentally demonstrated the detection capabilities for monolayer molecules and proteins using metamaterial absorbers with engineered vertical nanogaps.