1. Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
2. Department of Physics, Beckman Institute, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
3. U.S. Army Engineer Research and Development Center, Construction Engineering Research Laboratory, Champaign, Illinois 61822, United States
4. Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
5. Center for Nanoscale Materials and Biointegration, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States