Sensors were made from porous thin films of organic conductive plastics. (L. Brian Stauffer)

A small, thin square of organic plastic can detect disease markers in breath or toxins. The sensor chip can be used by patients and discarded.

Tiny pores were printed directly into the device, exposing highly reactive sites. Doing so increased the reactivity by ten times; the chip can sense down to one part per billion. By changing the composition of the sensor, devices could be created that are tuned to other compounds.