1. Department of BIN Convergence Technology and Department of Polymer Nano-Science and Technology; Chonbuk National University; Jeonju, Jeonbuk 54896 Korea
2. Department of Physics and Astronomy; Johns Hopkins University; Baltimore MD 21218 USA
3. Graduate School of Flexible and Printable Electronics Engineering; Chonbuk National University; Jeonju, Jeonbuk 54896 Korea
4. Liquid Crystal Institute; Kent State University; Kent OH 44242 United States