University of Pittsburgh researchers have synthesized a simple molecule that produces perfectly uniform, self-assembled nanotubes which organize themselves into a “nanocarpet” of upright clusters resembling a carpet (including a self-assembled backing) and can act as a bacterial biosensor or biocide.

These nanotubes can change color in the presence of chemical agents. In tests with E. coli the nanotubes changed color when the bacteria were present. The tubes also killed the bacteria.

University of Pittsburgh Medical Center news release