Sentences with phrase «index flat lens»
Not exact matches
An article published in the journal Nature explains that the new lens is formed from a flat slab of metamaterial with special characteristics that cause light to flow backward — a counterintuitive situation in which waves and energy travel in opposite directions, creating a negative refractive index.
https://www.sciencedaily.com/
The metamaterial has an angle - independent negative refractive index, enabling it to act as a flat lens.
Veselago reasoned that a material with a refractive index of -1 could be used to make a lens that is flat, as opposed to traditional refractive lenses, which are curved.