1. BioSystems and Micromechanics
(BioSyM) IRG, Singapore-MIT Alliance for Research and Technology (SMART) Centre, 3 Science Drive 2, Republic
of Singapore 117543
2. Department
of Physics, National University of Singapore, 2 Science Drive 3,
Republic of Singapore 117551
3. Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge,
Massachusetts 02139, United States