Sentences with phrase «terahertz waves at»

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.

The resulting saser can build up an intense, pure sound wave at a specific frequency in the terahertz range (far, far above the limit of human hearing) for a few billionths of a second.

In a new paper, electrical engineers at Duke University demonstrate the first completely dielectric (non-metal) electromagnetic metamaterial — a surface dimpled with cylinders like the face of a Lego brick that is designed to absorb terahertz waves.

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

Researchers at Tohoku University have found a way to make covered or hidden PC steel wires visible, by developing a new terahertz wave light source featuring both light and radio - wave characteristics.

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.