Sentences with phrase «metamaterial flat lens»
«The better to see you with: Scientists build record - setting metamaterial flat lens.»
https://www.sciencedaily.com/
The metamaterial flat lens achieves its refractive action over a distance of about two wavelengths of UV light, about half a millionth of a meter — a focal length challenging to achieve with conventional refractive optics such as glass lenses.
Not exact matches
Bottom right: Optical micrograph of the image projected beyond the slab under UV illumination, demonstrating that the metamaterial slab acts as a flat lens.
Furthermore, transmission through the metamaterial can be turned on and off using higher frequency light as a switch, allowing the flat lens to also act as a shutter with no moving parts.
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.
The metamaterial has an angle - independent negative refractive index, enabling it to act as a flat lens.