Views: 1 Author: Site Editor Publish Time: 2022-05-05 Origin: Site
According to foreign media reports, Japan's Toyohashi University of Technology and Okinawa Institute of Science and Technology Graduate University have jointly developed a flexible, multi-point Micro LED array film. It can be flexibly adhered to the brain and illuminate specific areas of the brain. It is expected to be free from the constraints of time and space, and to freely control complex brain activities. It has broad application prospects in the field of optogenetics.
The researchers used anisotropic wet etching to prepare this Micro LED film, the method selectively removes the bottom LED layer through potassium hydroxide, resulting in a very tightly packed Micro LED hollow structure. Since the hollow structure separates the LED layer and the substrate, the LED layer can be peeled off at one time by a thermal release sheet (transfer technique) without damaging the Micro LED or the biocompatible parylene film.
The overall size of the flexible Micro LED film is less than 100 μm, and the thickness is several μm. Micro LEDs can maintain the same performance even when bent. In addition, the researchers demonstrated that when the flexible Micro LED film is covered on the surface of the mouse brain, bright blue light can be obtained and used in practical optogenetic experiments.
According to reports, in recent years, with the development of optogenetic technology, light can realize the control of neural activity, but this technology requires the use of light sources that are thin, flexible and harmless to living tissue. The new Micro LED film developed by the Japanese research team is highly suitable for this kind of research. The researchers expect that this flexible Micro LED technology will create a new field of neuroscience research, with the aim of comprehensively understanding the underlying neural activity, behavior and disorders. brain information.
It is reported that the research results were published in the journal Applied Physics Press on March 18.
