Affiliation: | 1. Center for Nanomedicine Research, Division of Medical Engineering Research, National Health Research Institutes, , Zhunan, 35053 Taiwan;2. Department of Engineering and System Science, National Tsing Hua University, , Hsinchu, 30013 Taiwan;3. Department of Electrophysics, National Chiao Tung University, , Hsinchu, 30010 Taiwan;4. Institute of Physics, Academia Sinica, , Nankang, Taipei 115, Taiwan |