Counterfeit Breathalyzer

Terry Shyu, MSE PhD Student, demonstrates use of nanopillars that reveal hidden images via condensation of fluid on the structures in the NCRC. Shyu is part of Joseph B and Florence V Cejka Professor of Engineering Nick Kotov's research group that is using this form of nanostructure for the purpose of authenticating documents, currency, and so forth. Photo: Joseph Xu/Michigan Engineering Senior Producer, University of Michigan