1. Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 561-756, Republic of Korea
2. Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 561-756, Republic of Korea
3. Regional Leading Research Center for Nanocarbon-Based Energy Materials and Application Technology, Jeonbuk National University, Jeonju 561-756, Republic of Korea
4. Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju 561-756, Republic of Korea