Role of doped ZnO variants for the development of latent fingerprint

Abstract

Here we are presenting a promising approach for the green synthesis of zinc oxide (ZnO) nanomaterials by using lemon grass with minimal environmental impact. The fabricated zinc oxide (ZnO) doped with different dyes ranging from 25 −100 nm were applied to read the minutiae points of finger prints that can lead for person identification. In this model project, we doped different dyes on ZnO and used for the development of latent finger prints on different surfaces and at time duration (1 h to 24 h). The linkage between nanomaterials and fingerprint residues is among oxide group and amine group. We presented that these designed materials have the ability to develop fingerprints on variety of substrates. We displayed that with the passing of time the chroma index and intensity reduce but still at 24 h we can read the minutiae details. This research opens a new era to enhance and quantifying contrast between surface and applied material.