Scatter pattern produced by doughnut-shaped beams of light bouncing off of an object with a regularly repeating structure. Credit: Wang, et al., 2023, "Optica" Scatter pattern produced by ...

Light can be sculpted into countless shapes. Yet building optical devices that can simultaneously manipulate many different ...

A new twist on transmission electron microscopy (TEM) could enable the technique to unlock even more secrets on the nanoscale. Researchers in the US have produced a helical-shaped beam of electrons ...

Measuring antenna gain patterns is a critical part of evaluating the performance characteristics of an antenna under test. A software-defined radio (SDR) is an economical and flexible radio system ...

In a new study, researchers at the University of Colorado Boulder have used doughnut-shaped beams of light to take detailed images of objects too tiny to view with traditional microscopes. The new ...