1. Fischell Department of BioengineeringUniversity of Maryland College Park MD 20742 USA
2. Department of Materials Science and EngineeringSchool of Engineering and Applied ScienceUniversity of Pennsylvania Philadelphia PA 19104 USA
3. Center for Engineering MechanobiologyUniversity of Pennsylvania Philadelphia PA 19104 USA
4. Maryland Biophysics ProgramUniversity of Maryland College Park MD 20742 USA
5. Canon U.S. Life Sciences, Inc. 9800 Medical Center Drive, Suite C‐120 Rockville MD 20850 USA