Chemical sensing with LiMo3Se3 nanowire films.

Thin films (4-150 nm) of metallic LiMo3Se3 nanowires respond to chemical vapors of molecular analytes (2-400 mTorr) with rapid (<20 s) and mostly reversible changes of their resistance (DeltaR/R0 approximately 1-70%). Measurements show that the effect is concentration-dependent, and that it depends on the molecular properties of the analytes.