1. Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
2. Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia 22903, United States
3. Luna Innovations Inc. Danville, Virginia 24541, United States
4. Virginia Tech Carilion Research Institute, Roanoke, Virginia 24016, United States