As usual, the farewell party was happened at the end of each semester and welcome party was taken at the beginning of the semester. This year, we welcomed Mr Bao, Mr Quang both from Vietnam to be our Lab member. Also, we said goodbye to Dr. Canh who had great contribution to SSeL lab more than 8 years. Mr. Joo-Young also had much contribution to SSeL during the time which he studied at Lab.