Accession Number : AD1025227


Title :   Dielectric Sensing of Toxic and Explosive Chemicals via Impedance Spectroscopy and Plasmonic Resonance


Descriptive Note : Technical Report,01 Apr 2015,31 Dec 2015


Corporate Author : University of California - Santa Barbara Santa Barbara United States


Personal Author(s) : Allen,S J ; Hauser,Adam J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1025227.pdf


Report Date : 07 May 2017


Pagination or Media Count : 14


Abstract : The primary focus of this nine-month effort was to develop electronic sensors for hazardous chemicals. The first step was to identify material(s) that have interaction potential with chemicals of interest. In particular, specific reaction chemistry allows for resulting materials to exhibit specificity. Based on the most favorable materials, which included metal-oxides and metal-organic frameworks, impedance measurements and devices were pursued as the plasmonic resonance of these materials were far too weak to make sensible measurements or device architectures. Our results show that there are materials electronically sensitive enough to enable impedimetric devices that use the frequency-dependence fingerprint of AC impedance to improve selectivity.


Descriptors :   chemical warfare agents , DIELECTRICS , mass spectrometry , magnetic detectors , ELECTRICAL IMPEDANCE , equivalent circuits , nanoparticles , surface plasmon resonance , capacitance , HAZARDOUS MATERIALS , ZIRCONIUM OXIDES


Subject Categories : Magnetic & Electric Fld Detection & Detectors
      Chemical, Biological and Radiological Warfare


Distribution Statement : APPROVED FOR PUBLIC RELEASE