Advances in the physical, optical, and chemical visualization of latent prints

Antonio A. Cantu

doi:10.1117/12.739404

8 October 2007 Advances in the physical, optical, and chemical visualization of latent prints

Antonio A. Cantu

Proceedings Volume 6741, Optics and Photonics for Counterterrorism and Crime Fighting III; 67410D (2007) https://doi.org/10.1117/12.739404
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

Latent prints on substrates of varying porosity are visualized by a host of physical, optical, and chemical techniques that are often used sequentially. Optical techniques include viewing the scattering of UV radiation by latent print residue on smooth surfaces and inducing natural (inherent) fluorescence of such residue; physical techniques include visualizing the latent print using diverse powders and vapors that selectively polymerize on the residue; and chemical techniques include reacting components of latent print residue with reagents that render color and/or fluorescence to the residue. Recent developments in visualizing techniques include the use of nanoparticles, hyperspectral imaging, and the development of more sensitive reagents for visualizing the water-soluble components of latent print residue (e.g., amino acids) and the water-insoluble components (e.g., lipids, dried proteins, etc.). The chemistry of latent print residue and current research in the methods to visualize its components will be discussed.

Citation Download Citation

Antonio A. Cantu "Advances in the physical, optical, and chemical visualization of latent prints", Proc. SPIE 6741, Optics and Photonics for Counterterrorism and Crime Fighting III, 67410D (8 October 2007); https://doi.org/10.1117/12.739404

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available