Published Paper Details:

Criminal investigations in the field of forensic science continue to be built around the unmistakable identification of individuals through the study of latent fingerprints. This study has traditionally been restricted to porous surfaces because such materials' natural properties make it easier to see and analyze fingerprint residue. But non-porous surfaces like glass, metal, and plastic have long baffled forensic specialists and investigators, making the production of latent prints dependent on cutting-edge and reliable techniques. The goal of developing latent prints on non-porous surfaces has received fresh life in recent years thanks to the inclusion of novel methods and materials in the forensic toolbox. Among these innovative methods, the use of walnut shell fly ash, a byproduct of the combustion of walnut shells, has drawn substantial attention for it. It offers the possibility of a long-lasting, affordable, and economical technique for latent fingerprint creation on non-porous surfaces.