1. School of Advanced Materials Science and Engineering; Sungkyunkwan University; 300 Cheoncheon-dong, Jangan-gu Suwon Gyeonggi-do 440-746 Korea
2. LG Innotek Co.; Wollong Industry Complex, 1493, Naepo-ri, Munsan-eup Paju-city Gyeonggi-do 413-901 Korea
3. Department of Automobile Development; Ajou Motor College; Boryeong 355-769 Korea