1. Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China
2. International Academy of Optoelectronics at Zhaoqing South China Normal University Zhaoqing 526000 China
3. Department of Chemical Engineering University of Waterloo Waterloo ON N2L 3G1 Canada
4. School of Information and Optoelectronic Science and Engineering South China Normal University Guangzhou 510006 China
5. Canadian Light Source University of Saskatchewan Saskatoon SK S7N 0X4 Canada