1. Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
2. School of Mechanical Engineering, Purdue University, West Lafayette, IN, 47907, USA
3. School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA
4. Filmetrics, Inc., A KLA Company, 250 Packett's Landing Fairport, NY 14450, USA