1. Department of Chemical Engineering
2. Kyung Hee University
3. 446-701 Yongin-Si, Korea
4. Laboratory of Printable Functional Nanomaterials and Printed Electronics
5. School of Printing and Packaging
6. Wuhan University
7. Wuhan 430072, P. R. China
8. College of Chemical and Environmental Engineering
9. Department of Physics and Materials Science