Journal
CHEMICAL COMMUNICATIONS
Volume -, Issue 11, Pages 1142-1144Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b618966k
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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.
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