Affiliation: | aDepartment of Imaging System Engineering, Pukyong National University, San100 Yongdang-dong, Nam-gu, Busan, 608-739, Republic of Korea;bPackaging Technology Service Center, Korea Institute of Industrial Technology (KITECH), Chungnam, 330-825, Republic of Korea;cGraduate Institute of Ferrous Technology, Pohang University of Science and Technology, San 31, Hyoja-Dong, Pohang 790-784, Republic of Korea |