1. Department of Materials Science & Engineering, University of Arizona, Tucson, Arizona 85721, United States
2. Empa, Swiss Federal Laboratories for Materials Science & Technology, Dübendorf 8600, Switzerland
3. Kuiper-Arizona Laboratory for Astromaterials Analysis, University of Arizona, Tucson, Arizona 85721, United States
4. Department of Electrical & Computer Engineering, University of Arizona, Tucson, Arizona 85721, United States
5. Department of Physics, University of Arizona, Tucson, Arizona 85721, United States
6. Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, United States
7. Department of Materials Science & Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States
8. Max Planck Institute for Polymer Research, Mainz 55128, Germany
9. Department of Chemistry, Biochemistry & Pharmaceutical Sciences, University of Bern, Bern 3012, Switzerland