1. Department of Physics, National Taiwan University, Taipei 106, Taiwan ROC
2. Research Center for Applied Sciences, Academia Sinica, 128, Academia Road, Section 2, Nangang, Taipei 11529, Taiwan ROC
3. Nano-Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 106, Taiwan ROC
4. Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan ROC
5. Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu City 30010, Taiwan ROC
6. College of Engineering, Center for Green Technology, Chang Gung University, Taoyuan City 333002, Taiwan ROC