Affiliation: | a Department of Materials Science and Engineering, Korea University, 1-5 Ka, Anam-Dong, Sungbuk-Ku, Seoul 136-701, Republic of Korea b Department of Electric Engineering, Hanyang University, Seoul 133-791, Republic of Korea c InnoChips Technology Ltd.,769-12 Won-Si Dong, DanWonGu, AnSan, Republic of Korea |