Position: ProfessorTel&office No: +82-42-350-2838Fax:E-mail: jeongypark(at)kaist.ac.krHomepage: http://scale.kaist.ac.kr/Education: Seoul National University, Ph. D. in Physics, 1999
Seoul National University, M.S. in Physics, 1995
Seoul National University, B.S. in Physics, 1993Affiliation: 화학과ResearchField: Surface physics and chemistry, hot electron physics and chemistry
SCALE Laboratory (표면과학 촉매 연구실)
Using various surface sensitive techniques under in situ conditions where the chemical reactions are taking place, we aim to reveal the fundamental principles underlying the formation of nanostructures, and to build on this foundation to synthesize highly-efficient nanocatalysts with desired structure and properties.
It is known that catalytic activity depends on the size, shape, and composition of nanoparticles. We have systematically expanded this study by synthesizing multi-functional nanoparticles of different sizes, including core–shell, yolk–shell, and hybrid nanocatalysts. We collaborated with another research group that has the capability to synthesize and fabricate novel nanocatalysts. These nanoparticles were then characterized using various surface-sensitive techniques.
We have demonstrated electronic excitation created during atomic or molecular processes at the surface. This diode scheme has been utilized to show the analogous photocurrent process and its potential application in future solar and chemical energy conversion technologies.
Scanning Probe Microscopy
Surface science techniques allow us to determine reaction intermediates and surface mobility under catalytic reaction conditions. Scanning probe microscopy (combined with friction and conductance measurements) was utilized at ambient and reaction conditions, which permits us to investigate the nanomechanical (e.g., friction, adhesion, wear, indentation, modulus), charge transport (e.g., conductance, bandgap), and structural properties.