"Novel silicon etching technique crafts 3-D gradient refractive index micro-optics." ScienceDaily. www.sciencedaily.com / releases / 2016 / 11 / 161129153525.htm (accessed December 1, 2025).

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent ...

Researchers are making progress toward a “perfect lens” that will be able to resolve an organelle assembling a protein or a virus attacking a cell. From ribosomes assembling proteins to viruses ...

"The key is that the optical properties are a function of the etch current," Braun said. "If you change the etch current, you change the refractive index. We also think that the fact that we can ...