Scientists have learned to look at the world through the eyes of a moth


28/11/2007

During his night flying moths must be seen as much light to be guided well in space. Evolution gave some types of butterflies custom nanostructured layer over the eye, which helps to absorb the maximum amount of light does not reflect it.

Scientists at Cardiff University were able to develop an example of the moth eye lens, which can be used in low-light conditions.

The height of nanostructures on the surface of the new lens is less than 100 nanometers (a nanometer - a millionth of a millimeter). The size of the structures to be less than the wavelength of light to prevent the refraction of light as it enters the lens.

Tiny details of the structure of the lens surface through a managed rays focused beams of ions which are to form the structure of microscopic precision with highly charged atomic particles.

Scientists themselves have said that to create something like this was a very difficult task. The lens must not only have a perfect curvature, but the smallest surface structure itself must be less than the wavelength of light to smooth the refractive index of light as it enters the lens. This smoothing of the refractive index reduces the reflectivity, allowing you to absorb more light.

The new lens will undoubtedly find the most widely used on an industrial scale in the production of optical devices that need to work in low-light conditions.

Now scientists are looking for the possible applications of the lens in optoelectronics, as well as to increase the photovoltaic effect in semiconductors, such as solar cells, in which the loss of light is a major problem. New lenses may also find application in fiber optics, various sensors and medical diagnostic devices. Just tell us interesting news in detail.

Original: Sciencedaily.com


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