Tuning terahertz beams with nanoparticles

For years, scientists have dismissed terahertz radiation. Why? There were few ways to control this line-of-sight, nonionizing radiation. However, they saw its potential. For example, it could be used for short-range, high-bandwidth communications for tiny medical and environmental sensors. Now, researchers have developed a way to magnetically control terahertz beams using specially designed nanoparticles. By controlling the strength and direction of the applied magnetic field, the nanoparticles ...