Green Synthesis Of Nanoparticles And Its Application On Latent Fingerprints Imaging

Abstract

A fingerprint is an impression left by the friction ridge of a finger. The friction ridges are newlinepresent on overall surface of the fingers that leads to the finger-impressions. The impressions newlineare present on the fingers, also present on the toes and soles of the feet as well as on the newlinehands and palms. The fingerprint patterns are distinctive, till date, it has not been observed newlinethat any two people, including identical monozygotic twins, have the same fingerprints. The newlinefingerprints are unaffected by superficial wounds, and the same pattern or design persists newlineeven after new skin has grown. When we touch any surface or objects, we leave imprints on newlineit. These may or may not be visible prints. The invisible finger impressions are developed newlineusing various powder dusting and chemical methods like Iodine fuming, ninhydrin, newlinecyanoacrylate, silver nitrate method. The traditional powder-dusting method has some newlinedisadvantages in terms of low sensitivity, less contrast, toxic in nature, and high newlineautofluorescence intrusion. Therefore, to overcome these disadvantages and to get more newlineaccurate and precise results the use of nanoparticles has come into practice as a better choice. newlineThe present study focuses on the synthesis of nanoparticles using ecofriendly resources. From newlinethe two compounds, Silica and Graphene nanoparticles has been synthesized. newline newline