Korea National University of Transportation | South Korea
SeungHwan Yi is a professor in the Department of Mechanical Engineering at Korea National University of Transportation, recognized for his contributions to sensor engineering with a focus on MEMS and non-dispersive infrared (NDIR) gas-sensing technologies. He earned his B.S., M.S., and Ph.D. degrees in electrical engineering from Korea University, where he specialized in semiconductor thin films and later advanced sensor and MEMS device research. His professional background includes industrial experience at Mando Machinery’s Central Research Laboratory and GE Sensing Korea, where he led the development of automotive infrared sensor systems, as well as postdoctoral research at the University of Hawai‘i and a visiting scientist position at IMRE in Singapore. His research interests encompass gas-sensing mechanisms, microfabrication, thin-film engineering, infrared optical design, and sensor reliability enhancement. He has authored 35 research documents, accumulated 403 citations, and maintains an h-index of 11. His achievements have been recognized through awards from organizations such as the Korean Institute of Electrical and Electronic Material Engineers, the Korea Gas Union, and the Korean Sensors Society. Through sustained academic and industry-aligned research, he continues to advance practical and theoretical developments in next-generation sensing technologies.
Featured Publications
Yi, S. H. (2017). Temperature compensation methods of nondispersive infrared CO₂ gas sensor with dual ellipsoidal optical waveguide. Sensors and Materials, 29(3), 243–252.
Yi, S. H., Park, Y.-h., & Lee, J.-k. (2016). Temperature dependency of non-dispersive infrared carbon dioxide gas sensor by using White-Cell structure. Journal of Sensor Science and Technology, 25(5), 377–381.
Yi, S. H. (2021). Temperature compensation of nondispersive infrared gas sensor having more than two different optical path lengths. Journal of Sensor Science and Technology.
Kim, J., Lee, J., Lee, K., & Yi, S. H. (2017). Enhanced characteristics of nondispersive infrared CO₂ gas sensor by deposition of hydrophobic thin film. Proceedings, 1(4), 410.
Kim, J., & Yi, S. H. (2017). Effects of temperature and humidity on NDIR CO₂ gas sensor. Journal of Sensor Science and Technology, 26(3), 179–185.