I'm interested in light matter interaction – how light energy is absorbed in a target material, how the absorbed energy is converted and transported throughout the target, and how the target material responds to it. These basic questions are important to understand the physical mechanism such as target material damage upon laser irradiation and its mitigation, and to develop useful optoelectric applications such as infrared photodetectors. Previously, I have developed novel laser material processing techniques using laser induced-heating, deposition, and ablation, and also performed optical material characterizations such as Raman and scanning photocurrent microscope.
Honors and Awards
- DDST Excellence in Publication Award, LLNL, 2018
- Kwangjeong Scholarship, Kwanjeong Educational Foundation, Korea, 2010 ~ 2014
Selected (Recent) Publications
Dongwoo Paeng*, Jae-Hyuck Yoo*, Junyeob Yeo, Daeho Lee, Eunpa Kim, Seung Hwan Ko, and Costas P. Grigoropoulos, "Low-cost facile fabrication of flexible transparent copper electrode by nanosecond laser ablation,"
Jae-Hyuck Yoo, Jung Bin In, Ioanna Sakellari, Rajesh Raman, Manyalibo Matthews, Selim Elhadj, Cheng Zheng, and Costas Grigoropoulos, "Directed dewetting of amorphous silicon film by a donut-shaped laser pulse,"