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Researcher Sergey Kharinstev and his team at Kazan Federal University recently published a paper in Optics Letters where they detail the design of a new type of metalens capable of imaging beyond the optical diffraction limit.
Schematic of the working principle of a disordered TiN/TiO2. Courtesy of Kazan University.
A metalens described in the article is a thin composite metal-dielectric film placed on a dielectric substrate; the width is several dozen nanometers.
“The light has a wave nature, so there is a diffraction limit which confines the resolution of traditional optical microscopy,” said Kharintsev, who believes his team’s discovery might lead to the use of optical technologies in nanoscale integral…READ MORE