Butterfly wings suggested the idea of ​​eye implant

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<pre>Butterfly wings suggested the idea of ​​eye implant

Transparent sections of the wings of the so-called glass butterflies practically do not reflect light. At one time, their unique properties were inspired by developers of glare-free displays. Recently, they were followed by an assistant doctoral student at California University of Technology Hyuk Cho.

He developed a tiny eyeball implant in the form of a drum designed for permanent socks. Its main purpose is to prevent glaucoma. As is known, glaucoma increases pressure on the optic nerve, which can result in complete blindness.

Being on the surface of the eye, the implant flexes inward under pressure. In this case, the portable external device visually reads the depth of deflection while simultaneously determining the force of pressure. The idea is that users, while at home, can independently check their eyesight.

However, the reader had a serious drawback: the depth of deflection it measured, being strictly perpendicular to the surface of the implant. Here and used the butterfly wings.

For them, the angle of incidence of light does not matter. This is due to the fact that they are covered with tiny columns 100 nanometers in diameter, which are located at a distance of 150 nanometers from each other. Columns correct the direction of the light rays regardless of the angle of their incidence in the perpendicular plane.

Hyuk Cho and his colleagues were able to reproduce this nanostructure on the surface of the implant, reinforcing it with columns of about the same shape and size as on the butterfly wings. As the material was chosen inert silicon nitride (Si3N4). After a series of experiments, scientists managed to reduce the level of distortion by three times reading the implant.

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