title: Detection of Hazardous Liquids Using Microwaves.
abstract: We investigate the feasibility of using dielectric spectra to classify hazardous and nonhazardous liquids. The dielectric spectra of several liquids was obtained with a shielded-open coaxial fixture, and we present a new full-wave model for calculating the complex permittivity of liquids using this fixture. Using the measured complex permittivity for each liquid, we examine several classification methods for distinguishing between the hazardous and nonhazardous liquids and report on the error rates of each method.
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Michael D
authors.initials: MD
authors.lastname: Janezic
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Jolene D
authors.initials: JD
authors.lastname: Splett
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Coakley
keywords: binary classification; dielectric spectra; nearest neighbor; shielded-open coaxial fixture