Abstract
Forensic Science & Addiction Research Gold Nanoparticle in the Application of Forensic Fingermark Development: A Short Review Revathi Rajan1,2*, Yusmazura Zakaria2, Shaharum Shamsuddin2 and Nik Fakhuruddin Nik Hassan2 1 Department of Diagnostics and Allied Health Sciences, Malaysia 2 School of Health Sciences, Malaysia *Corresponding author: Revathi Rajan, Department of Diagnostics and Allied Health Sciences, Malaysian Submission: February 15, 2019;Published: March 29, 2019 DOI: 10.31031/FSAR.2019.04.000596 ISSN 2578-0042 Volume4 Issue4
Highlights
The development of fingermarks using gold nanoparticle (GNPs) was first introduced by Saunders in 1989 [1]
Numerous scientific works has discussed the theoretical possibilities of interaction pathways, mostly favoring electrostatic interaction between negatively charged citrate capped gold nanoparticle and n-terminus of the amino acid in fingermark residue
The succinic anhydride that has carboxyl group was able to detect luminescent fingermark at pH 3.5 the methyl phosponate and sulfanate capped silicon dioxide nanoparticles (SDNPs) was reported to have absolutely no affinity for the fingermark residues [23]. These findings argued that the electrostatic theory is not the interaction mechanism by which the GNPs are attracted to the fingermark residue but the formation of peptide bond between the amine terminal in the amino acids and the carboxyl group in the capping substrate of the GNPs is more likely to be the interaction that aids gold deposition [23]
Summary
The development of fingermarks using gold nanoparticle (GNPs) was first introduced by Saunders in 1989 [1]. The technique involved two major phases, depositing the citrate capped GNP on the fingermark residue and followed the enhancing step using silver physical developer [1]. The GNPs, in turn, serve as the nucleation site for the growth of the silver physical developer giving clearer ridge details [3] This technique was termed multi metal deposition technique because two distinct metals were utilised in the course of the fingermark development [4]. Lower contrast of the developed fingermarks against dark or colored background Stauffer et al [8] attempted to resolve this problem by replacing the silver physical enhancer with gold solution [8]. The resolution of the fingermark’s ridge details were superior to the conventional MMD technique [10]
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