1. a Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea
2. b Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea
3. c Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea
4. d Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea
5. e Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
6. f Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea, Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
7. g Polymer Fusion Research Center, Department of Polymer-Nano Science and Engineering, Chonbuk National University, Jeonju 561-756, South Korea. dlee@chonbuk.ac.kr