1. Institute of Nanoscience, National Chung Hsing University, Taichung City 40227, Taiwan
2. Department of Physics, National Chung Hsing University, Taichung City 40227, Taiwan
3. Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung 40227, Taiwan
4. Department of Physics, KPR Institute of Engineering and Technology, Coimbatore 641407, Tamilnadu, India
5. Postgraduate and Research Department of Physics, Nanotechnology Lab, Kongunadu Arts and Science College, Coimbatore 641029, Tamilnadu, India