No one has built terahertz switches, but Nahata says the new study shows it is possible to use terahertz radiation to carry data and thus may be possible to create terahertz-speed switches for superfast wireless communication over short distances, such as between a cellular phone and headsets, a wireless mouse and a computer, and a PDA (personal digital assistant) and a computer.
University of Utah researchers have shown it is possible to harness far-infrared light -- also known as terahertz electromagnetic radiation -- for use in superfast wireless communications and to detect concealed explosives and chemical or biological weapons. The researchers shined far-infrared light on metal foils punctured with holes arranged in what are known as quasicrystal and quasicrystal-approximate patterns. Even though the holes make up only a portion of each foil's surface, almost all the radiation passed through the metal foils with these patterns. This photo shows a quasicrystal pattern. Credit: Tatsunosuke Matsui, University of Utah
Terahertz lasers can work at over 25 meters