US Government As Represented by the Secretary of the Army

Other

Alan C Samuels

Thomas E Koscica

Arthur H Carrieri

Tudor N Buican

Erik S Roese

Hong-Liang Cui

David L Rhodes

Janet L Jensen

William R Loerop

James J Sutter

Dwight Woolard

James O Jensen

Harry Salem

A pseudo-active chemical imaging sensor including irradiative transient heating, temperature nonequilibrium thermal luminescence spectroscopy, differential hyperspectral imaging, and artificial neural network technologies integrated together. The sensor may be applied to the terrestrial chemical contamination problem, where the interstitial contaminant compounds of detection interest (analytes) comprise liquid chemical warfare agents, their various derivative condensed phase compounds, and other material of a life-threatening nature. The sensor measures and processes a dynamic pattern of absorptive-emissive middle infrared molecular signature spectra of subject analytes to perform its chemical imaging and standoff detection functions successfully.

Sensor system and method for the panoramic standoff detection of chemical contaminants on terrestrial surfaces

A continuous monitoring method and system wherein a porous substrate or film is used. The air from the environment is drawn through a region of the porous substrate by a simple air pump and the substances in the air are deposited or chemically adsorbed onto the surface of the substrate. The region of the substrate where the environmental air is drawn through is continuously monitored by an optical or spectrometric method. The substrate is in the form of a tape supplied by a feed reel in a reel-to-reel cartridge and taken up by a take-up reel as found in a film cartridge or a magnetic tape cartridge. The cartridge can be replaceable. A variety of materials may be employed as the substrate with an adequate surface area to effect accumulation of solid, liquid, aerosol, or gas phase compounds. An optical interrogation system is engineered such that the surface of the tape at the point where air from the environment is drawn through the substrate becomes the interaction region between the source output and the sample. As material from the environment accumulates in this region, the interaction of the source with the material is monitored by a suitable detector and supporting circuitry.

Air sampling method and sensor system for spectroscopic detection and identification of chemical and biological contaminants

Methods and apparatus for measuring the millimeter or submillimeter wave absorption spectra in a sample of DNA molecules are provided.

Methods and apparatus for detecting lesion-induced resonances in deoxyribonucleic acid via millimeter or submillimeter wave spectroscopy

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Havre de Grace, MD, United States of America

Alan C Samuels