1. Graphene Research Center, KAIST Institute for the NanoCentury, School of Mechanical, Aerospace and Systems Engineering, Division of Ocean Systems Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Gwahak-ro, Yuseong-gu, Daejeon 305-701, South Korea
2. Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery & Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 305-343, South Korea