DYE DOPED SILICA NANOPARTICLES AS NOVEL AGENT FOR DEVELOPING LATENT FINGERPRINTS
Sagar Bhowmik, Dr. Harsad Patel
Institute of Research and Development, Gujarat Forensic Sciences University, Gandhinagar, Gujarat-382007
Nanotechnology contributes to forensic sciences in different ways. Since it can detect and analyze samples in the nanoscale, critical evidence that could not be collected and analyzed before. The development of latent fingerprint is one of the critical evidence of the forensic investigations. There are various methods of development of latent fingerprints. The present research present a new nanotechnology based powder method for the development of latent fingerprint. In this study, various dyes doped silica nanoparticles have been used to develop the latent fingerprints on commonly encountered different surfaces i.e, glass, aluminum foil, paper. It is observed that it gives very clear results on most of the substrates with clear ridge characteristics. For the synthesis of silica nanoparticles, the alkoxide route of the sol-gel method is used. Type of dye used for doping are Rhodamine B, Crystal Violet and Ethidiumbromide.
Keywords :- Latent Fingerprint, Rhodamine B, Crystal Violet, Ethidiumbromide, sol-gel method.