Such patterns are central to understanding the diffraction limit, a natural effect that sets a boundary on the smallest details that conventional optical microscopes can resolve. (Image: adapted from ...

To celebrate these developments, this issue features a focus on super-resolution imaging techniques that operate beyond the diffraction limit ... become central to three-dimensional far-field ...

It is widely assumed that diffraction places a limit on the smallest features that can be produced by light-based fabrication techniques, such as photolithography. This limit is typically about ...