1. Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information Technology Anhui University Hefei Anhui 230601 P. R. China
2. School of Physical Science and Information Technology Liaocheng University Liaocheng Shandong 252059 P. R. China
3. Hefei National Laboratory for Physical Sciences at Microscale University of Science and Technology of China Hefei Anhui 230026 P. R. China
4. Stony Brook Institute at Anhui University Anhui University Hefei Anhui 230039 P. R. China