Sentences with phrase «energy terahertz waves»

Not exact matches

As a result, even though several airports already rely on a type of terahertz security scanners, they typically use low - frequency, continuous - wave energy at a single terahertz frequency, which enables them to create images of items carried in suitcases and pockets but not a spectral signature of those items that would indicate their composition.

Terahertz radiation is also low energy, so if they are used to scan people, the waves are less dangerous than x-rays or microwaves.

Physical tests showed that the new «metasurface» absorbed 97.5 percent of the energy produced by waves at 1.011 terahertz.

Until recently, the range was rarely studied and few sources existed for microwave energy at the high end of the band (sub-millimeter waves or so - called terahertz waves), but applications such as imaging and communications are now appearing.