Fluorescence of 1,2-Indanedione with Amino Acids Present in the Fingerprint Residue: Application in Gender Determination.

1,2-indanedione is used for latent fingerprint visualization on porous surfaces. In this paper, fluorescence spectra of 1,2-indanedione after reacting with 21 individual amino acids present in latent fingerprints residue were measured in water-methanol solutions. The fluorescence intensity depends on the amino acid used, while the fluorescence peak does not change much.

Enhanced Visualization of Latent Fingermarks on Rough Aluminum Surfaces Using Sequential Au and Zn/ZnS/ZnO Depositions.

Detection and visualization of fingermarks on rough and diffuse surfaces is a relatively challenging task. We succeeded in developing latent fingermarks on scratched and rough aluminum surfaces by sequential deposition of a thin layer of gold followed by one of zinc or zinc-based compounds on the fingermarks. The best image enhancement was achieved with sequential Au and ZnS depositions.