Nano-technologies have wide applications in the field of forensic science. Nanotechnology is animportant and powerful tool in most the areas including medicine, imaging, and forensic sciences. Ithas potential to make significant positive contribution in forensic science in crime detection. Thepresent article focuses on the applications of CaO nanoparticles in developing and detecting thelatent fingerprints. Fingerprint is considered noteworthy evidence in any crime scene, andnano-based techniques. An attempt was made to elucidate how nanotechnologies could be crucial inaddressing current forensic investigation issues such as explosive detection, toxicological analysis,finger print analysis, forensic DNA analysis, detection of explosive residue, forensic nano trackersand drug facilitated crime.

Nano forensics is the advanced application of nanotechnology-based techniques to resolve cases in forensic science. Forensic science offers scientific methods in a criminal investigation. Nano-forensics deals with the development of new approaches for fingerprint visualization, DNA isolation, forensic toxicology, explosive detection, identification of body fluids, gunshot residue analysis, detection of illicit drugs, etc. The nanomaterials used in forensic science are nanocrystals, nanoparticles, quantum dots, nanobelts, nanocomposites, nanoclusters, nanotubes, nanorods, etc. The scope of nanotechnology is very wide.