* Corresponding authors

^a Department of Polymer-Nano Science and Technology, and Polymer Materials Fusion Research Centre, Chonbuk National University, Jeonju 561-756, Korea
E-mail: kujeong@chonbuk.ac.kr
Fax: +82 63 270 2341
Tel: +82 63 270 4633

^b Institute for Soldier Nanotechnologies and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
E-mail: elt@mit.edu

^c Department of Polymer Science, The University of Akron, Akron, OH 44325, USA

^d Department of Textile Engineering, Chonbuk National University, Jeonju 561-756, Korea