1. Department of Chemical and Biological Engineering, Montana State University, 305 Cobleigh Hall, PO Box 173920, Bozeman, MT 59717, USA
2. Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, PO Box 173980, Bozeman, MT 59717, USA
3. Department of Chemistry and Biochemistry, Montana State University, 103 Chemistry and Biochemistry Building, PO Box 173400, Bozeman, MT 59717, USA