Affiliation: | 1. Department of Mechanical Engineering, University of California, Berkeley, CA, 94720-1740, USA 2. School of Advanced Materials Engineering, Kookmin University, Seoul, 136-702, South Korea 3. Department of Mechanical Engineering, Gachon University, Seongnam-si, Gyeonggi, 461-701, South Korea 4. Department of Electronics and Radio Engineering, Kyung Hee University, Gyeonggi, 446-701, South Korea 5. Flexible Display Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi, 463-816, South Korea
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