Lasers developed by the research team at St Andrews University can be used for security checks.
Scientists at the University of St Andrews, Scotland, built a millimeter thick that could be attached to contact lenses, Newsweek reported Monday. This membrane allows the user to shoot a laser beam from the eye.
Film mounted on contact lenses in test with bull eye. Photo: Newsweek.
The film is made of an organic semiconductor polymer. It emits very weak laser light when another laser is shining in. Each membrane can produce a unique bar code in the form of slender lines on the plane.
The team hopes the new technology brings many useful applications. Membrane can be used to identify as a type of security stamp. This small and lightweight item can also be attached to other items such as polymer money, counterfeit money, even as an explosive detector.
In a study published in the journal Nature Communications, the team described the membrane and demonstrated its ability to emit a laser by attaching it to contact lenses and placing it on the eye, often used in experiments because of many similarities. self-eye As a result, the membrane is safe if used on humans.
"Our research marks a new milestone in the development of lasers, particularly that lasers can be used in soft environments, in human sensors, or used as authenticity on money." paper, " said Malte Gather, professor of physics at St Andrews University.
