1. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
2. Institute of Experimental Physics, Faculty of Mathematic, Physics and Informatics, University of Gdansk, 80-308 Gdansk, Poland
3. Institute of Physics, Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin al. Piastow 48, 70-311 Szczecin, Poland
4. College of Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, People’s Republic of China
5. Institute of Physics, University of Tartu, W. Ostwald Strasse 1, Tartu 50411, Estonia
6. Institute of Physics, Jan Dlugosz University, Armii Krajowej 13/15, PL-42200 Czestochowa, Poland
7. Lextar Electronic Corp., Hsinchu 300, Taiwan
8. Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 106, Taiwan