1. Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 561-756, Republic of Korea
2. Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 561-756, Republic of Korea
3. Mechanical Design Engineering, Jeonbuk National University, Jeonju 561-756, Republic of Korea