Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging

Short summary

Researchers have fabricated metalenses using titanium dioxide metasurfaces that achieve diffraction-limited focusing at visible wavelengths (405, 532, and 660 nm) with high efficiencies (up to 86%) and enable subwavelength resolution imaging with magnifications up to 170x.

AI-generated from the title and abstract; the full text is not read.