|Niels van Hoof. Credit: Eindhoven University of Technology|
With a wave length of about half a millimeter, terahertz radiation fills the gap between visible light and radio waves. This radiation lends itself very well to the in-depth measurement of the electrical properties of new materials, as doctoral candidate Niels van Hoof has demonstrated. He helped build a unique terahertz microscope that can be operated entirely remotely—handy in a pandemic.