1. Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
2. Institute of Applied Mechanics, National Taiwan University, Taipei 10617, Taiwan
3. Research Center for Applied Sciences and Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
4. Molecular Imaging Center and Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan