University of Utah researchers have found that the far-infrared light could enable quicker wireless communications and can be employed to effectively enhance concealed weapons detection. The terahertz radiations could be used to detect chemical or biological weapons (such as anthrax), concealed weapons and plastic explosives. Ajay Nahata, an associate professor at the University of Utah said that the homeland security applications of terahertz technology comprise the use of “emitters and detectors of terahertz radiation to detect materials that resonate at a terahertz frequency when exposed to far-infrared light.