Selectively Enhanced UV-A Photoresponsivity of a GaN MSM UV Photodetector with a Step-Graded AlxGa1-xN Buffer Layer. - Chang-Ju Lee; Chul-Ho Won; Jung-Hee Lee; Sung-Ho Hahm; Hongsik Park (Sensors, 2017)

GaN-Based Ultraviolet Passive Pixel Sensor on Silicon (111) Substrate. - Chang-Ju Lee; Chul-Ho Won; Jung-Hee Lee; Sung-Ho Hahm; Hongsik Park (Sensors, 2019)

Effect of Graphene Doping Level near the Metal Contact Region on Electrical and Photoresponse Characteristics of Graphene Photodetector. - Jaedong Jung; Honghwi Park; Heungsup Won; Muhan Choi; Chang-Ju Lee; Hongsik Park (Sensors, 2020)

Genetic Algorithm Based Optimazation Technique for Shaping the Matal Pattern of Planer Antenna for mm-Wave Systems. - Hongsik Park; Seong Uk Kim; Jaewon Koh; Seongbu Seo; Yejune Seo; Sungtek Kahng (ICAIIC, 2024)

High-Efficiency GaN Vertical PiN Diode Power Devices for Satellite Communications in 6G Networks. - Donghan Kim; Hyeon-Tak Kwak; Hyun-Woo Lee; Hongsik Park; Soo-Young Moon; Hoe-Min Kwak; Sung-Bum Bae; Hyung-Seok Lee (ICTC, 2024)

Antenna Integration for Millimeter-Wave RF Sensing and Millimeter-Wave Communication Mountable on a Platform. - Jaewon Koh; Hongsik Park; Woogon Kim; Seongbu Seo; Yejune Seo; Sungtek Kahng (Sensors, 2024)

The Finding of the Defects of an 6G Array Antenna Using Deep Learning Programs. - Jinwoo Bae; Sanghyun Yun; Woogon Kim; Jaewon Koh; Hongsik Park; Sungtek Kahng (ICAIIC, 2025)