Ultra-thin membrane turns eyes into lasers

Scientists at the University of St. Andrews (UK) have developed an ultra-thin membrane laser based on organic semiconductors, which, when installed on the eye, will greatly increase the capabilities of human vision. The membrane, despite its thin structure and unique flexibility, has an enviable strength, retaining its optical properties even after several months of use on a contact lens.

The eyepiece laser, which has already been tested on the eyes of a cow, easily identifies clear lines on a flat background - for example, a drawing of a digital barcode. The technology can find application in the field of security, in biophotonics (a branch of science that studies the interaction of biological objects with photons) and photomedicine.

Professor Malt Geyser, a member of the group of scientists, said the work represents a new milestone in the development of a laser and, in particular, provides an answer to the question of how a laser propagates in soft and plastic media. The invention can be used in wearable sensors or as an authentication feature on banknotes.