Department of Chemistry, College of Science, National Tsing Hua University; Department of Electrical Engineering, College of Electrical Engineering and Computer Science, National Tsing Hua University; Undergradate Program of EECS, College of Electrical Engineering and Computer Science, National Tsing Hua University; National Tsing Hua University; Institute of Electronics Engineering, College of Electrical Engineering and Computer Science, National Tsing Hua University; Department of Physical Education, Hsinchu Teachers College, National Tsing Hua University