1. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
2. Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
3. Department of Physics, Acadia University, Wolfville, Nova Scotia B4P 2R6, Canada
4. Clean Technologies Research Institute, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
5. College of Sustainability, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada