Experts from two U.S. institutions – Princeton, and Washington – have invented a small camera the size of a grain of salt. The study published in the journal Nature Communications.
The width of the camera detector is only 0.5 millimeters. Its metasurface is made up of 1.6 million cylinders at a certain tilt. They perceive as well as refract light in a precise way, and then methods create an image from the data.
The camera was created with the help of fluorescent microscopy, so it is possible to take an image with three times the resolution used in conventional photo and video cameras.
Princeton experts believe this material could be used for medical and cosmetic purposes. “It would be used in miniature glucose meters and in bionic arms to measure blood pressure,” explained Chris Huntington, one of the study authors.
Tissue sensors have begun to be used in a number of tissues, such as blood cells, but their technology does not always work correctly because bacteria and proteins can accumulate the radiation to which these sensors respond.
In the future, the scientists intend to improve their method. As the authors point out, they plan to develop a smaller and cheaper sensor for the spinal cord, which could possibly be used to treat cancer, Parkinson’s disease and some other diseases.