Schematic of the planar device for producing dark- field speckle patterns. (Image from USTC). Credit: Douguo Zhang et al. Researchers from the University of Science and Technology of China (USTC) have ...

Researchers from the University of Science and Technology of China (USTC) have unveiled a planar optical device that significantly enhances the capabilities of dark-field microscopy, achieving ...

In 1873, Ernst Abbe proposed the famous diffraction limit theory, stating that the resolution of an optical system is limited by the light wavelength ...