Low-power microsensors for explosives and nerve warfare agents using silicon nanodots and nanowires

Michael J. Sailor; William C. Trogler; Sonia Letant; Honglae Sohn; Stephane Content; Thomas A. Schmedake; Jun Gao; Peter Zmolek; Jamie R. Link; Yeshaiahu Fainman; Fang Xu; Paul E. Shames

doi:10.1117/12.441265

27 September 2001 Low-power microsensors for explosives and nerve warfare agents using silicon nanodots and nanowires

Michael J. Sailor, William C. Trogler, Sonia Letant, Honglae Sohn, Stephane Content, Thomas A. Schmedake, Jun Gao, Peter Zmolek, Jamie R. Link, Yeshaiahu Fainman, Fang Xu, Paul E. Shames

Author Affiliations +

Proceedings Volume 4393, Unattended Ground Sensor Technologies and Applications III; (2001) https://doi.org/10.1117/12.441265
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Nanocrystalline porous silicon films (nanodots) and polymeric silicon wires (nanowires) have been used to detect chemicals in gas and liquid phase. Transduction mechanisms using quantum confinement derived photoluminescence and optical reflectivity have been used. Photoluminescence intensity is modulated by energy or electron transfer induced quenching, and a shift of the Fabry-Perot reflectivity fringes from thin nanocrystalline films occurs upon molecular absorption. Examples of irreversible detection and reversible sensing modes for explosives, nerve warfare agents, and various odors of commercial interest will be provided. A catalyst can be incorporated into the nanomaterials to provide specificity for the analyte of interest.

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Michael J. Sailor, William C. Trogler, Sonia Letant, Honglae Sohn, Stephane Content, Thomas A. Schmedake, Jun Gao, Peter Zmolek, Jamie R. Link, Yeshaiahu Fainman, Fang Xu, and Paul E. Shames "Low-power microsensors for explosives and nerve warfare agents using silicon nanodots and nanowires", Proc. SPIE 4393, Unattended Ground Sensor Technologies and Applications III, (27 September 2001); https://doi.org/10.1117/12.441265

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KEYWORDS

Silicon

Luminescence

Silicon films

Sensors

Polymers

Reflectivity

Nerve

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