title: Application of nanoparticles for the enhancement of latent fingerprints.
abstract: Two different types of nanoparticles dissolved in organic solution, gold stabilized by n-alkanethiols and CdSe/ZnS stabilized by n-alkane-amine, 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; finger marks treated with CdSe/ZnS nanoparticles can be viewed directly, due to their fluorescence under UV illumination.
authors.affiliation: Institute of Chemistry and the Centre for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
authors.forename: Matias
authors.initials: M
authors.lastname: Sametband
authors.forename: Itzhak
authors.initials: I
authors.lastname: Shweky
authors.forename: Uri
authors.initials: U
authors.lastname: Banin
authors.forename: Daniel
authors.initials: D
authors.lastname: Mandler
authors.forename: Joseph
authors.initials: J
authors.lastname: Almog