1. Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
2. Materials & Environment section, Department 3MD Faculty of Civil and Engineering and Geosciences Delft University of Technology 2628 CN, Delft, The Netherlands
3. Laboratory of Soft and Living Materials, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
4. Department of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, 2629 HZ, Delft, The Netherlands
5. Cornell Center for Materials Research, Cornell University, Ithaca, New York 14853, United States
6. Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, United States