1. School
of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore
2. Waseda Bioscience Research Institute in Singapore (WABIOS), Singapore 138667, Singapore
3. Comprehensive
Research Organization, Waseda University, Shinjuku, Tokyo 162-0041, Japan
4. Department
of Life Science and Medical Bioscience, Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 162-8480, Japan
5. Department
of Physics, Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
6. PRESTO, Japan Science and Technology Agency,
Kawaguchi, Saitama 332-0012, Japan