Our organ of sight is an extremely powerful tool through which we can observe the world around us. Scientists for years but want to create its artificial version, which is characterized by greater possibilities.
It seems that American engineers from the Massachusetts Institute of Technology is the best way to achieve this wonderful vision. Artificial eye could change for the better the lives of millions of blind and visually impaired, as well as provide a new view of the quality of the rest of the population.
The scientists presented their latest amazing opportunity artificial eye. It was established on the basis of perovskites, or future material, which is used in solar cells. His attribute is the ability to create with its spherical design. The bionic eye MIT perovskites built with nanowires. They play the role of photoreceptor cells that send electrical impulses to the brain.
In the process of the construction of semi-spherical retina used aluminum oxide, densely dotted nanoscale pores, and these pores were filled was perowskitami deposition process from the gas phase. All of bionic eye filled with the ionic liquid, the type of liquid salt, which can move the charged particles, the perovskites with photoreceptors.
It turns out that during testing the artificial retina has achieved better results than the natural, we have the young and healthy people. The bionic eye is not only characterized by a wider field of view and response time, but also offers a much higher resolution images.
Photoreceptors of perovskite activated in just 19.2 milliseconds, and return to the point of their possible reactivation in 23.9 milliseconds. Meanwhile, the reaction time and return to the standby human photoreceptor is from 40 to 150 milliseconds. This means that the bionic eye reaches from 2 to 6 times better results. This fact translates into a faster adaptation to changing light conditions. From MIT artificial eye we will be able to see almost immediately after entering the room to clear completely shaded.
The researchers report that the field of view of the artificial eye is 100 degrees, while the human eye 130 degrees. Although the numbers MIT eye looks worse, but in reality this vision of our eye is not that we fully utilized, and this is due to the focus point SmartUser. The bionic eye, however, has 460 million light sensors per square centimeter, and only the natural eye photoreceptor 10 million per square centimeter.
It is through such a large number of sensors, the image captured by the bionic eye has a much higher resolution, and thus the quality of vision of the natural eye. But that’s not all, artificial eye can adjust the depth of field point, so the field of view can be expanded as needed. Engineers boast that their invention allows a much better view at night as well. The image in such conditions contains many more details from the natural image.
Researchers from the Massachusetts Institute of Technology, there is still a lot of work towards achieving fully utility of artificial eye, so that we could possess the ability to now reserved only for members of other species. Despite this, more than ever, they are getting closer to the desired goal. And this information enjoys the most.