title: Visual indicator for trace organic volatiles.
abstract: We describe herein a novel approach for visual indication of trace organic vapors. The sensor utilizes a microporous material within a visual thin film transducer to produce changes in color upon exposure to a very wide range of volatile organic compounds. Visual indication at 5 parts per million (ppm) is demonstrated, with optoelectronic detection achieved to below 50 parts per billion (ppb). Through a thoughtful design of the sensor, we are able to avoid interference from water vapor, a critical attribute needed for practical application.
authors.affiliation: 3M Company, 3M Center, Building 235-2B-87, St. Paul, Minnesota 55144, USA.
authors.forename: Neal A
authors.initials: NA
authors.lastname: Rakow
authors.forename: Michael S
authors.initials: MS
authors.lastname: Wendland
authors.forename: John E
authors.initials: JE
authors.lastname: Trend
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Poirier
authors.forename: Dora M
authors.initials: DM
authors.lastname: Paolucci
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Maki
authors.forename: Christopher S
authors.initials: CS
authors.lastname: Lyons
authors.forename: Mary J
authors.initials: MJ
authors.lastname: Swierczek