The story behind our recently accepted paper, "Analysis of Powders Containing Illicit Drugs Using Magnetic Levitation", Abrahamsson, C. K., Nagarkar, A. A., Fink, M. J., Preston, D. J., Ge, S., Bozenko, J. S. and Whitesides, G. M. Angewandte Chemie, in press 2019, 

https://chemistry.harvard.edu/news/drug-dust