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Related Experiment Videos

Trace explosives sensor testbed (TESTbed).

Greg E Collins1, Michael P Malito2, Cy R Tamanaha1

  • 1Naval Research Laboratory, 4555 Overlook Avenue, Southwest, Washington, D.C. 20375, USA.

The Review of Scientific Instruments
|April 5, 2017
PubMed
Summary
This summary is machine-generated.

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A new Trace Explosives Sensor Testbed (TESTbed) enables precise delivery of diverse explosive vapors for sensor calibration. This system offers controlled, reproducible vapor generation for reliable explosives detection research.

Area of Science:

  • Analytical Chemistry
  • Chemical Engineering
  • Sensor Technology

Background:

  • Accurate detection of trace explosives is critical for security.
  • Existing vapor delivery systems often lack versatility for various explosive types.
  • Controlled vapor generation is essential for calibrating and validating explosives sensors.

Purpose of the Study:

  • To demonstrate a novel vapor delivery testbed for explosives detection research.
  • To provide a versatile platform for generating high- and low-volatility explosive vapors.
  • To enable reproducible testing and calibration of trace explosives sensors.

Main Methods:

  • Development of the Trace Explosives Sensor Testbed (TESTbed).
  • Incorporation of a six-port dual-line manifold system for rapid source switching.

Related Experiment Videos

  • Utilization of diverse vapor sourcing methods including gas cylinders, permeation tubes, headspace chambers, and a specialized nebulizer system.
  • Implementation of temperature, humidity control, and a graphical user interface.

    • Main Results:

    • The TESTbed successfully generates vapors from a wide range of explosives (e.g., TNT, PETN, RDX, nitroglycerin).
    • Demonstrated continuous, pulseless control of trace vapor concentrations with a wide dynamic range.
    • Achieved reproducible vapor profile outputs across six sampling ports.
    • Minimized adsorption of low-volatility explosives onto the manifold surface.

    Conclusions:

    • The TESTbed is a versatile and effective platform for generating controlled explosive vapor atmospheres.
    • It facilitates the development and validation of sensitive and reliable explosives detection technologies.
    • The system's features support advanced research in explosives sensing and security applications.