Author

Namra Aziz

Publication Date

5-1-2015

Document Type

Conference Poster

First Advisor

Kocanda, Martin

Degree Name

B.A. (Bachelor of Arts)

Department

Department of Biomedical Engineering

Abstract

The commonly used detection and preservation of latent fingerprints methods employ dry powders or wet chemistry principles to visualize the samples in the field and also for laboratory analysis. This research examines a rarely-used technique to visualize latent fingerprints with a secondary purpose of preservation as the sample fingerprints may be exposed to extreme conditions. The method employs physical vapor deposition of silver deposited on glass, plastic, paper and metal substrates. Varying thicknesses of silver ranging from 1.0 nm to 10.0 nm are deposited on substrates and examined for optimal spectral, transmittance and reflectance signals. Subsequent analysis repeats the spectral examination of latent fingerprints contained on the surfaces after the vapor deposition and addresses the optical properties and visualization methods of fresh and weathered latent prints.

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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