Fingerprint examination
A new method for examining fingerprints based on nanotechnology provides detailed maps of their chemical composition while creating traditional images of their structural features. Instead of taking samples back to the lab, law-enforcement agents could use the technique, a variation on mass spectrometry, to reveal traces of cocaine, other drugs, and explosives on the scene.
Nanotechnology helps to detect gun criminals
To fight against gun crime currently used forensic testing is limited and often unreliable as DNA evidence is easily destroyed and gun residue cannot always be traced on the user. New DNA tagging technology has been developed by scientists at the University of Surrey. The breakthrough uses nanotechnology to coat gun cartridges which captures the user's DNA. These nametags are also easily transferred to the user's hands and clothing and are difficult to wash off, making it harder for gun criminals to cover their tracks. Additionally, the composition of the coating can be chemically manufactured to make each batch of cartridges unique, allowing police to establish a clear link between the user and a fired cartridge.