Professor Ki-Hun Jeong, PhD

Principal Investigator
Associate Professor, Department of Bio and Brain Engineering, KAIST 
Co-Director, KAIST Institute for Optical Science and Technology
1011 CMS Bldg. (E16). Gwahangno 335, Yuseong-gu, Daejeon 305-701, Korea
Phone +82.42.350.4323 (Office), FAX +82.42.350.4310, Email:
kjeong (at)

Ki-Hun Jeong is currently an associate professor in the Department of Bio and Brain Engineering at KAIST in Korea, as well as an co-director at KAIST Institute for Optical Science and Technology since 2006. He received a PhD from the University of California at Berkeley in 2005.

His previous research interests during PhD and postdoctoral studies at UC Berkeley were the design, microfabrication, and measurement of biophotonic MEMS for biomedical applications such as biomimetic advanced photonic devices, nanomechanical biophysical sensors, nanogap based dielectric spectroscopic biosensors, and MEMS endoscopes. In particular, his main achievement on biomimetic advanced photonic systems was published in Science in 2006, entitled as “Biologically Inspired Artificial Compound Eyes”. This work received huge attentions from over 40 international/Korean News media. This work provides a new paradigm for developing wide field-of-view imaging or motion detection in surveillance detectors, mini-robots, and miniaturized imaging systems such as endoscopes, digital cameras or mobile phones.

His current research interests at KAIST include nanophotonics and Optical MEMS that can be inspired from biology and also utilized for advanced biological science or biomedical applications. After he joined at KAIST as an assistant professor, his academic backgrounds on photonic design, diverse micro/nanofabrication, and photonic measurements have been modified and stimulated to focus on the following three specific topics among broad biophotonic areas, also aligned with the personal academic strength as well as the long term objectives of the department of bio and brain engineering at KAIST

Eunyoung Yu
Grant Administration, Assistant to Prof. Ki-Hun Jeong
Phone +82.42.350.4396 (Office), FAX +82.42.350.5363, Email: eunyu (at) 

Postdoctoral Fellows
Email: sgpark86 (at)
Biosensing & Bioimaging is the most important way to analyse biological activity.There are many demands for a high-sensitive, high-resolution and biocompatibile method. Plasmonics have received much attention thanks to their extraordinary phenomenon, especially on nanometer-sized metallic structures. I'm interested in their optical characteristics and how to control these properties. And my current focus is development of applications of localized surface plasmon resonance for high-sensitive, high-resolution and biocompatible bio-sensing and bio-imaging.

Ph.D Students

Dongmin Keum
Email: dmkeum (at)
I am interested in biomimetic N/MEMS. My current research focuses on the development of N/MEMS devices for optical sensor inspired by the compound eyes.
Min-Hee Kang
Email: minikang (at)
The LSPR sensor measures resonance wavelength shifts in extinction spectra due to biochemical interactions that are amplified by metallic nanostructures. My research focuses on applying these phenomenon to develop of a LSPR based label-free optical biosensor using metal nanoparticle arrays. LSPR is related to the electromagnetic field enhancement that leads to surface-enhanced Raman scattering (SERS).I am also interested in design and modeling of SERS substrates and fabrication of it.

Email: yseoplee (at)
Bio-inspired engineering system and BMI(Brain Machine Interface) have a big potential, but there are not many deep research about that. I’m interested in bio-inspired engineering system and BMI related optics system. I hope to develop the optics system based on bioluminescence and BMI system using optics.

Moonseong Park
Email:  mspark613 (at)
I'm interested in plasmonic application is bio-detection. Especially, my current research topic is 
detection of SERS signal of biomaterials in a single living cell.   


Jae-beom Kim
Email:   jbkim12 (at)
I'm interested in plasmonic nano lithopragphy system.
My current reaearch topic is digital lithography system using plasmonic lens for high-resolution


Sung-Pyo Yang
Email:  spyang (at)
I'm interested in Bio-inspired optical systems.  Currently, my research goal is to design novel fabrication procedure of aspherical microlens for various optical applications

Email:  kwjang (at)

3D imaging technology have applied not entertainments but medical industries. Stereoscopic endoscope is one of most interesting 3D imaging system. For stereoscopic endoscope, novel miniaturized device is required. I’m interested in development of the miniaturized device and hope to construct compact stereoscopic endoscope system with high resolution.

Yeong-Hyeon Seo
Email:  yseo (at)

I am interested in Endo-microscopy. My research focuses on developing miniaturized forward-viewing catheter for OCT (Optical Coherence Tomography) applications using MEMS fabrication.
I hope that my research is helpful to people.


Master Students

Myeong-Su Ahn
Email:  m.s.ahn (at)

Plasmonics has diverse applications in the field of bio-engineering. Among them, I am interested in color filter using nanostructures which exhibits tunable optical properties of plasmon. This key optical component can be applied into bio-imaging system which needs to be miniaturized.


Kyungmin Hwang
Email:  k.hwang (at)

I'm interested in a miniaturized microscopy for freely behaving mouse's brain imaging. My current research topic is a Lissajous fiber scanning catheter for confocal brain imaging using MEMS fabrication.

Charles Soon Hong Hwang 
Email:  h.charles (at)

Chan-Sol Hwang 
Email:  cshwang15 (at)

Sang-In Bae
Email:  si_bae (at)

Masahiro OGUCHOTokyo Institute of Technology,Japan,  Aug-Sept.2012


Cheol Song, Professor in Robotics Engineering at DGIST, Postdoctoral Fellow 2010-2011. 
Jeonghwan Lee, Research Scientist at LG Inotek, Korea. MS Graduate 2009-2012.
Yongjae Choi, Seoul National University, College of Medicine, MS Graduate 2008-2010.
Sunki Chae,  Research Scientist at LG Electronics, Korea. MS Graduate 2007-2009.
Minseok Lee,  Research Scientist at INFINITT Healthcare, Korea. MS Graduate 2011-2013.
Hyeon-Cheol ParkPostdoctoral Fellow in John Hopkins University, PhD Graduate 2008-2014.
Young-Jae Oh, Research Scientist at Samsung Electronics, Korea. PhD Graduate 2008-2014.
Seung-Bum Yang,  Research Scientist at LG Household & Healthcare, Korea. MS Graduate 2012-2014.
Hyuk-Jin Jeong, PhD Graduate 2007-2015
Jae-Jun Kim, Postdoctoral Fellow in University of Wisconsin-Madison, PhD Graduate 2010-2015.