Kim, Dai-Sik (김대식)

Department

Department of Physics(물리학과)

Website

http://nanooptics.unist.ac.kr/

Lab

Nano Optics Group (나노광학 연구실)

Research Keywords

나노광학, 나노구조, 나노소자, Nano Optics, Nanogap Fabrication, Angstrom-scale Electromagnetism, VO2 Phase Transition Control, Optical Field Mapping

Research Interests

We study subwavelength confinement of electromagnetic wave and their nonlinearity in nanometer and angstrom-scale antennas. By using a new patterning technology based on atomic layer deposition, chemical vapor deposition and simple adhesive tape-based planarization creates vertically oriented gaps in opaque metal film along the entire contour of a millimeter-sized pattern with gap widths less than a nanometer. Squeezing terahertz electromagnetic waves through these nanometer and angstrom-scale gaps leads to giant field enhancements, nonlocal electromagnetic effects and light-induced electron tunneling.