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

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

doi:10.1117/12.3028551

4 October 2024 Maximal visualization-enhancement of latent fingermarks on polymer banknotes using columnar thin films

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

Author Affiliations +

Proceedings Volume 13116, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI; 1311604 (2024) https://doi.org/10.1117/12.3028551
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

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 singlestep 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.

Conference Presentation

Citation Download Citation

Muhammad Faryad, Abdul Rehman, Partha P. Banerjee, and Akhlesh Lakhtakia "Maximal visualization-enhancement of latent fingermarks on polymer banknotes using columnar thin films", Proc. SPIE 13116, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI, 1311604 (4 October 2024); https://doi.org/10.1117/12.3028551

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