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Title: Fingerprint detection

A method for detection and visualization of latent fingerprints is provided and includes contacting a substrate containing a latent print thereon with a colloidal metal composition for time sufficient to allow reaction of said colloidal metal composition with said latent print, and preserving or recording the observable print. Further, the method for detection and visualization of latent fingerprints can include contacting the metal composition-latent print reaction product with a secondary metal-containing solution for time sufficient to allow precipitation of said secondary metal thereby enhancing the visibility of the latent print, and preserving or recording the observable print.
Authors:
 [1]
  1. (Rt. 1, Box 428B, Espanola, NM 87532)
Publication Date:
OSTI Identifier:
868115
Report Number(s):
US 5079029
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
fingerprint; detection; method; detection; visualization; latent; fingerprints; provided; contacting; substrate; containing; latent; print; thereon; colloidal; metal; composition; time; sufficient; allow; reaction; colloidal; metal; composition; latent; print; preserving; recording; observable; print; method; detection; visualization; latent; fingerprints; contacting; metal; composition-latent; print; reaction; product; secondary; metal-containing; solution; time; sufficient; allow; precipitation; secondary; metal; enhancing; visibility; latent; print; preserving; recording; observable; print; colloidal metal; colloidal metal; time sufficient; time sufficient; reaction product; metal composition; metal composition; metal composition; substrate containing; secondary metal; secondary metal; containing solution; substrate contain /427/