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Related Experiment Video

Updated: Jul 12, 2026

Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue
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A Novel LIBS Sensor for Sample Examinations on a Crime Scene.

Violeta Lazic1, Fabrizio Andreoli2, Salvatore Almaviva1

  • 1Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Laboratory FSN-TECFIS-DIM, Via Enrico Fermi 45, 00044 Frascati, Italy.

Sensors (Basel, Switzerland)
|March 13, 2024
PubMed
Summary

A new compact laser-induced breakdown spectroscopy (LIBS) sensor was developed for crime scene analysis. This portable LIBS device achieves detection limits below 10 picograms for most elements, aiding forensic investigations.

Keywords:
LIBScrime scenefingerprintsforensicgunshot residuelaser spectroscopylimit of detectionportable instrumentsensitivetraces

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Area of Science:

  • Forensic Science
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Law enforcement agencies require rapid, on-site material characterization at crime scenes.
  • Existing methods may be time-consuming or require sample transport to laboratories.
  • Laser-Induced Breakdown Spectroscopy (LIBS) offers potential for elemental analysis.

Purpose of the Study:

  • To develop and characterize a compact LIBS sensor for forensic applications.
  • To enable both tabletop and handheld operation for versatile crime scene analysis.
  • To assess the sensor's performance, including detection limits and depth profiling capabilities.

Main Methods:

  • Development of a compact, battery-powered LIBS sensor with integrated camera and illumination.
  • Optimization of LIBS acquisition parameters for elemental analysis.
  • Testing on various forensic-relevant samples including fingerprints, soil, gunshot residue, and coated plastics.

Main Results:

  • Achieved elemental detection limits below 10 picograms for nano-plotted traces on silica wafer.
  • Demonstrated successful analysis of diverse materials such as fingerprints, soil, and gunshot residue.
  • Successfully performed depth profiling on coated plastics, distinguishing all four car paint layers.

Conclusions:

  • The developed compact LIBS sensor is suitable for on-site forensic material characterization.
  • The sensor offers high sensitivity and versatile operation modes for crime scene investigations.
  • LIBS technology shows promise for enhancing forensic analysis capabilities.