Maximal visualization-enhancement of latent fingermarks on polymer banknotes using columnar thin films

Muhammad Faryad, Abdul Rehman, Partha P. Banerjee, Akhlesh Lakhtakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Polymer banknotes are being increasingly adopted to replace older banknotes. Since banknotes are forensically important substrates for fingermark detection and identification, we present a single-step process to enhance the visualization of fingermarks on banknotes using 40-nm-thick columnar thin films (CTFs) of nickel. This single-step vacuum technique enhances the quality grade of fingermarks maximally, whether the fingermarks are aged for one or seven days before CTF deposition. This work represents progress over currently available sequences of diverse techniques for enhancing fingermarks on polymer banknotes.

Original languageEnglish (US)
Title of host publicationNanoengineering
Subtitle of host publicationFabrication, Properties, Optics, Thin Films, and Devices XXI
EditorsBalaji Panchapakesan, Andre-Jean Attias, Andre-Jean Attias, Wounjhang Park
PublisherSPIE
ISBN (Electronic)9781510678927
DOIs
StatePublished - 2024
EventNanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI 2024 - San Diego, United States
Duration: Aug 20 2024Aug 21 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13116
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI 2024
Country/TerritoryUnited States
CitySan Diego
Period8/20/248/21/24

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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