[1] Department of Physics and Atmospheric Sciences, Dalhousie University, Halifax NS B3H 4R2, Canada
[2] Institute for Research in Materials, Dalhousie University, Halifax NS B3H 4R2, Canada
[3] Department of Chemistry, Dalhousie University, Halifax NS B3H 4R2, Canada
[4] Corning Incorporated, Corning, NY 14831, United States