1. Department of Physics, School of Materials Science and Engineering, Taizhou University, Taizhou, People’s Republic of China
2. Department of Science Education, School of Life Science, Taizhou University, Taizhou, People’s Republic of China
3. College of Teacher Education, Southwest University, Chongqing, People’s Republic of China
4. College of Teacher Education, Northwest Normal University, Lanzhou, People’s Republic of China