Preparation and evaluation of metal nanopowders for the detection of fingermarks on nonporous surfaces
- Publication Type:
- Journal Article
- Journal of Forensic Identification, 2006, 56 (5), pp. 756 - 768
- Issue Date:
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Gold and silver nanoparticles using oleylamine as a stabilizer have been formulated for developing latent fingermarks on nonporous surfaces. These nanopowders are compared with conventional powders such as black powder, black magnetic powder, aluminum powder, and white powder. Gold nanopowder produced sharp and clear development of latent fingermarks without background staining. Scanning electron microscope images revealed that particles were concentrated in the fingermark ridge areas, with only minor amounts located in the valley regions.
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