about me

I received my BS in Electrical Engineering from KAIST in 2008, MS and PhD in Electrical Engineering and Computer Sciences from University of California, Berkeley in 2010 and 2013 respectively.

During my undergraduate years in electrical engineering, I was fascinated by the fact that great fundamental ideas such as transistor and Fourier transform can change the world completely. My love for physics led me to delve into semiconductor devices and processes further. Particularly, I have intensively worked on printed electronics for low-cost, flexible and large-area electronics applications. My main achievements in printed electronics during my PhD are the followings:

• Scaling of gravure-printed thin-film transistors (TFTs) on plastic down to unprecedented level below 5µm for fast switching in MHz operations.
• Understanding of the impact of dynamic contact angles on two-dimensional film generation in various printing systems.
• Understanding of the mechanism of 1/f noise in novel thin-film transistors. Here, I conducted very first detailed analysis of the 1/f noise in organic TFTs and showed how band structure is correlated with the 1/f noise.

After learning how patterning novel nanomaterials can open up new applications, my research interests shift toward biomedical engineering applications using printed bio-functional nanomaterials, novel electronics and fabrication processes. I strongly believe that they can change and improve the way we are diagnosed, treated, cured and rehabilitated. Particularly, I am broadly interested in Brain-Machine Interfaces where novel micro-technologies can improve communication with our nervous system (recording, signal transfer, and stimulation). With the application of flexible, transparent electronics with bio-functional nanomaterials, I truly believe the multi-functional engineering platform can open up new ways to understand and modulate our nervous system to help people with disabilities such as spinal cord injury, seizure and so on. Please find more about my Current research and Previous research.

I currently lives in Daejeon, South Korea. In 2013, I married to Boyoung Kim, a talented PhD in Linguistics (UCSD) specialized in second language acquisition. We enjoy traveling, hiking, and tasting foods from all over the world.

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