Dr. Choi's expertise is summarized to be 5 categories: (a) opto-electric biosensor to examine cellular characteristics of cellular proliferation, confluence, adhesion, and apoptosis, (b) micro-/nano-fabrication to develop microfluidic devices, transparent indium tin oxide electrode, and cell mimics, (c) microfludics to examine hindered Brownian motion and measure velocity field in microchannels, (d) development of integrated dynamic microscopic optical imaging system .....
Most research works have been done during Dr. Choi's doctorate period under the supervision of Dr. Kennedh Kihm and Dr. Anthony English and post-doc period working with Dr. Kihm, Dr. English, Dr. Seung J. Baek, and Dr. Doktycz. Now he is trying to expand his micro/nano fluidics and cellular sensing with a help of nanotechnology in his new micro-EOS lab..Cell Mimics: It is interesting and important to examine how synthetic creations can help reveal how living systems work. While traditional synthetic biology is generally used to describe the use of synthetic molecules for studying biological systems and engineering genetic circuits, recent trends of synthetic biology ....
Microscale Electrical and Optical Sensing (micro-EOS) Laboratory 
Opening New Laboratory of "micro-EOS: microscale electrical and optical sensing laboratory" .