Sherlock Holmes could look at a gun shell and know exactly what went down. The firearm? The shooter's stance? The culprit? All revealed with a glance. In the real world, using a shell to solve a crime is a painstaking, and often unsuccessful, process. Investigators may be able to match a bullet with a gun type, but that doesn't necessarily lead to the person who shot it. Useful fingerprints are rare, and the heat of firing a weapon can destroy DNA evidence.
A team of nanomaterials scientists led by Paul Sermon, of Brunel University in England, has developed a bullet that captures the DNA of anyone who touches it—and leaves a tracer on the person, too.
Scientists dipped a bullet in a formaldehyde-urea resin, creating a microscopic scratchy surface that snags skin cells. When fired in lab tests, the bullet retained 53 percent more analyzable DNA than an untreated one.
The team needed a compound that would tag whoever handled a bullet, something both sticky and rare enough to be recognizable. They started with a natural source: pollen. Because of its rough texture, pollen clings to skin and clothing; some grains even remain after a handshake or a run through a washing machine. They're also invisible to the human eye. Pollen alone, however, isn't unique enough to pinpoint a criminal. So the team coated Easter lily pollen with a 63-nanometer layer of titanium dioxide—a combination that doesn't exist in nature. A bullet painted with thousands of the modified pollen grains would mark a shooter's finger when he loads the bullet. To have any effect on crime, governments would have to require that ammunition manufacturers make modified bullets; Sermon's team is in talks with U.K. officials.
But what would it add to cost of ammo? Even if you covered the whole gun in this... once the word is on the street a glove defeats the Tech anyway. Only thing this will accomplish is raising the cost of ammo. This is yet another example of money going out the barrel that would be better spent on enforcing the Laws we have on the books and increasing sentencing to those who use a gun to commit a crime....Nice try but I think you guys need to get out from under the neon and try some fresh air and sunshine...lol..