Columnar-thin-film acquisition of fingermark topology

Robert C. Shaler; Akhlesh Lakhtakia; Jessica W. Rogers; Drew P. Pulsifer; Raúl J. Martín-Palma

doi:10.1117/12.859708

23 August 2010 Columnar-thin-film acquisition of fingermark topology

Robert C. Shaler, Akhlesh Lakhtakia, Jessica W. Rogers, Drew P. Pulsifer, Raúl J. Martín-Palma

Proceedings Volume 7766, Nanostructured Thin Films III; 776607 (2010) https://doi.org/10.1117/12.859708
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

Fingerprint visualization obtained from physical evidence taken from crime scenes for subsequent comparison typically requires the use of physical and chemical techniques. One physical technique to visualize or develop sebaceous fingerprints on various surfaces employs the deposition of metals such as gold and zinc thereon. We have developed a different vacuum technology: the conformal-evaporated-film-by-rotation technique to deposit dense columnar thin films (CTFs) on latent fingerprints on different types of surfaces. Sample fingerprints, acting as nonplanar substrates, deposited on different surfaces were placed in a vacuum chamber with the fingerprint side facing a boat containing an evaporant material such as chalcogenide glass. Thermal evaporation of the solid material led to the formation of a dense CTF on the fingerprint, thereby capturing the topographical texture with high resolution. Our results show that it is possible to acquire the topology of latent fingerprints on non-porous surfaces. Additionally, deposition of CTFs on overlapping fingerprints suggested ours may be a technique for elucidating the sequence of deposition of the fingerprints at the scene.

Citation Download Citation

Robert C. Shaler, Akhlesh Lakhtakia, Jessica W. Rogers, Drew P. Pulsifer, and Raúl J. Martín-Palma "Columnar-thin-film acquisition of fingermark topology", Proc. SPIE 7766, Nanostructured Thin Films III, 776607 (23 August 2010); https://doi.org/10.1117/12.859708

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Contrast transfer function

Chalcogenide glass

Gold

Glasses

Visualization

Adhesives

Chalcogenides

Show All Keywords

Keywords/Phrases

Search In:

Publication Years