Patent ID: 9222905
Filing Date: 2015-12-29
Classification: B82Y,G01N

Abstract:
1. A device for selective detection of benzene gas, the device comprising, on a base substrate, a combination of sensors, the combination of sensors comprising: a) at least one multi- or single-wall carbon nanotube sensor functionalized with oxygen plasma and decorated with rhodium (Rh) clusters; b) at least one multi- or single-wall carbon nanotube sensor functionalized with oxygen plasma, the at least one sensor being one of undecorated or decorated with metal clusters selected from one of gold, palladium, nickel, and titanium; c) at least one multi- or single-wall carbon nanotube sensor functionalized with oxygen plasma and decorated with platinum (Pt) clusters; where said base substrate further comprises interdigitated metal electrodes for measuring variation in a resistance of said sensors; and wherein said device selectively detects and quantifies benzene gas at a concentration below 100 parts per billion (ppb) in the presence of other interfering gases.