Application of nanoparticles for the enhancement of latent fingerprints

Matias Sametband, Itzhak Shweky, Uri Banin, Daniel Mandler*, Joseph Almog

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

145 Scopus citations

Abstract

Two different types of nanoparticles dissolved in organic solution, gold stabilized by n-alkanethiols and CdSe/ZnS stabilized by n-alkaneamine, adhere preferentially to the ridges of latent fingerprints; the gold deposits catalyze silver electroless deposition from "Silver Physical Developer" (Ag-PD), an aqueous solution containing silver colloids stabilized by cationic surfactants, to form dark impressions of the ridge details; the hydrophobic capped gold nanoparticles significantly improve the intensity and clarity of the developed prints compared with Ag-PD alone; fingermarks treated with CdSe/ZnS nanoparticles can be viewed directly, due to their fluorescence under UV illumination.

Original languageAmerican English
Pages (from-to)1142-1144
Number of pages3
JournalChemical Communications
Issue number11
DOIs
StatePublished - 2007

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