Affiliation: | 1. School of Engineering and Applied Sciences, Harvard University, , Cambridge, MA, 02138 USA;2. Department of Civil, Structural and Environmental Engineering, University at Buffalo, , Buffalo, NY, 14260 USA;3. Wyss Institute for Biologically Inspired Engineering, Harvard University, , Boston, MA, 02115 USA;4. Kavli Institute for Bionano Science and Technology, Harvard University, , Cambridge, MA, 02138 USA |