1. Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
2. Nano-Integrated-Circuit Engineering Program, National Cheng Kung University, Tainan, Taiwan
3. Department of Mechanical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
4. Department of Electrical Engineering, College of Electrical Engineering & Computer Science, National Cheng Kung University, Tainan, Taiwan
5. Department of Digital Game and Animation Design, School of Application Design, Tung Fang Design University, Kaohsiung, Taiwan