One breath could possibly save your life! NSF Science Now 27

The video discusses three NSF-funded projects. The first project involves smart headlights that reduce glare for night drivers by using a DLP projector to control light beams. The second project identifies sources of gas contamination in drinking water related to hydraulic fracturing, highlighting the need for improved well integrity. The third project introduces nanopillar labels that reveal hidden images when exposed to moisture, helping to combat counterfeit drugs.

Describe the function of the high-tech label developed by chemical engineers to combat counterfeit drugs.

What materials can the nano pillars stick to, and how do they reveal hidden images?