1. Department of Life Science; National Taiwan University; No. 1, Sec. 4, Roosevelt Road Taipei 10617 Taiwan
2. Graduate Institute of Electronics Engineering; National Taiwan University; Taipei Taiwan
3. School of Biological Sciences; University of Missouri; Kansas-City MO USA
4. Department of Biomechatronic Engineering; National Ilan University; No.1, Sec. 1, Shen-Lung Road I-Lan 260 Taiwan