The threat of exposure to toxic chemicals is of great concern. In order to provide a chemical situational awareness, we are developing a new type of chemical sensor based on a novel fabric spectrometer-based colorimetric chemical sensor that is low size, weight, and power (SWaP). We are exploring the key design principles for photonic transducers to enable a new approach to chemical threat sensing. The fabric spectrometer is based on a functional fiber platform in which the semiconductor-containing fiber is miniature in two dimensions and extendable in the third dimension (along the fiber length). By exploring fibers, and films that can be scaled to a fiber geometry, we will enable a new fiber-based chemical threat detector that can serve in textiles as well as other interesting form factors.
KEYWORDS: Spectroscopy, Reflectivity, Toxic industrial chemicals, Biological and chemical sensing, Absorption, Sensors, Chemical fiber sensors, Colorimetry, Thin films
We are currently developing a novel fabric spectrometer-based colorimetric chemical sensor that is lightweight, sensitive, and person-borne. This research will enable a new class of chemical sensors with a much flexible form factor to open up a variety of other person-borne and distributed sensing applications.
Chemical warfare agents (CWAs) such as nerve and blister agents are expected to pose continuing and growing dangers for the Warfighter in the future. We investigate a novel chemical detection modality, based on a new platform for colorimetric detection of chemical threats incorporated in hollow fibers, which are miniature in two dimensions and extendable (“extrudable”) in the third dimension (along the fiber length). By exploring fibers, and films that can be scaled to a fiber geometry, we will enable a new fiber-based chemical threat detector that can serve in textiles worn by the Warfighter (e.g., uniform), as well as in non-worn textiles and an outlying fence or perimeter for early detection of a threat cloud near an expeditionary shelter, outpost, encampment, or base.
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