@ KAIST, Apr 3th 2018

@ POSTECH, Feb 19th 2016

@ "Science Student Lounge (Dept. of Chemistry)", Mar 12th 2014

@ Mt. Juwang, Oct 20th 2012

@ Sokcho, Jun 29th 2012

@ Todaiji, Nara, Japan, Jan 10th 2012

@ POSTECH, Jul 21st 2011

@ Taean, Jul 3rd 2010