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Potential applications of scanning probe microscopy in forensic science
Journal article   Open access   Peer reviewed

Potential applications of scanning probe microscopy in forensic science

Gregory S Watson and Jolanta A Watson
Journal of Physics: Conference Series, Vol.61(1), pp.1251-1255
2007
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url
https://doi.org/10.1088/1742-6596/61/1/247View
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Abstract

scanning probe microscopy
The forensic community utilises a myriad of techniques to investigate a wide range of materials, from paint flakes to DNA. The various microscopic techniques have provided some of the greatest contributions, e.g., FT-IR (Fourier-transform infrared) microspectroscopy utilised in copy toner discrimination, multi-layer automobile paint fragment examination, etc, SEM-EDA (scanning electron microscopy with energy dispersive analysis) used to investigate glass fragments, fibers, and explosives, and SEM in microsampling for elemental analysis, just to name a few. This study demonstrates the ability of the Scanning Probe Microscope (SPM) to analyse human fingerprints on surfaces utilising a step-and-scan feature, enabling analysis of a larger field-of-view. We also extend a line crossings study by incorporating height analysis and surface roughness measurements. The study demonstrates the potential for SPM techniques to be utilised for forensic analysis which could complement the more traditional methodologies used in such investigations. © 2007 IOP Publishing Ltd.

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Chemistry, Physical
Nanoscience & Nanotechnology
Physics, Atomic, Molecular & Chemical
Physics, Condensed Matter

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