Title :
Chemoselective Salisbury Screen Absorbers for passive standoff detection of analytes
Author :
Bray, M.G. ; Kovalev, A. ; Werner, D.H. ; Mayer, T.S. ; Takiff, L.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA
Abstract :
In this paper we present a chemoselective chaff element for the passive detection of chemical agents. Each chaff element is implemented as a salisbury screen absorber (SSA). The resistive layer of the absorber consists of a conductive polymer that changes conductivity in the presence of an analyte. When the targeted analyte is present, the conductive polymer transitions from a state of low resistivity to approximately the impedance of free space. This change in resistivity causes the chaff element to transition from a state of high reflectivity to an absorbing state.
Keywords :
chemical engineering; electromagnetic wave absorption; Chemoselective salisbury screen absorbers; chaff elements; conductive polymer transitions; conductive polymers; passive standoff detection; Chemical analysis; Chemical elements; Conductivity; Detectors; Dielectric substrates; Doping; Impedance; Polymers; Reflectivity; Silicon;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619269
