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Related Experiment Video

Updated: Jul 12, 2026

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Published on: July 25, 2014

Developments on standoff detection of explosive materials by differential reflectometry.

Claus Schöllhorn¹, Anna M Fuller, Julien Gratier

¹Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, Florida 32611-6400, USA.

|September 7, 2007

Summary

Differential reflectometry (DR) enhances explosives detection by using UV light to measure electron energy absorption, creating a unique substance fingerprint. This portable, fast, and safe standoff method offers a cost-effective solution for security screening.

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Last Updated: Jul 12, 2026

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Published on: May 8, 2015

Area of Science:

Optics and Photonics
Materials Science
Analytical Chemistry

Background:

Existing explosives detection systems can be enhanced by complementary technologies.
Optical techniques offer non-invasive standoff detection capabilities.

Purpose of the Study:

To present differential reflectometry (DR) as a supplementary tool for explosives detection.
To highlight the principles and advantages of DR for substance identification.

Main Methods:

Utilizing ultraviolet (UV) light for standoff optical measurements.
Measuring electron energy absorption from photons to identify electron transitions.
Employing these unique electron transitions as a "fingerprint" for substance identification.

Main Results:

Differential reflectometry provides a unique spectral fingerprint for substance identification.
The DR technique is demonstrated as a portable, fast, and safe standoff method.
The system avoids the need for direct sample ingestion, enhancing safety and usability.

Conclusions:

Differential reflectometry is a highly effective supplementary technology for explosives detection.
The standoff nature and unique fingerprinting capability of DR offer significant advantages.
DR presents a cost-effective, safe, and efficient solution for security applications.