1. Fujian Provincial Key Laboratory for Photonics Technology & Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education; Fujian Normal University; Fuzhou 350007 China
2. Institute of Bioengineering and Nanotechnology; 31 Biopolis Way The Nanos Singapore 138669 Singapore
3. Singapore-MIT Alliance for Research and Technology; 1 CREATE Way, #10-01 CREATE Towe Singapore 138602 Singapore
4. Department of Mechanical Engineering, Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
5. Department of Physiology; Yong Loo Lin School of Medicine; MD9-04-11, 2 Medical Drive Singapore 117597 Singapore
6. Mechanobiology Institute; National University of Singapore, T-Lab; #05-01, 5A Engineering Drive 1 Singapore 117411 Singapore