1. Department of ChemistryNational Taiwan University Taipei 106 Taiwan
2. Graduate Institute of Nanomedicine and Medical EngineeringCollege of Biomedical EngineeringTaipei Medical University Taipei 110 Taiwan
3. Department of Electrical Engineering and Graduate Institute of Electronic EngineeringNational Taiwan University Taipei 106 Taiwan
4. National Synchrotron Radiation Center Hsinchu 300 Taiwan
5. Instrumentation CenterNational Taiwan University Taipei 106 Taiwan