Sentences with phrase «terahertz waves»

Naturally occurring moisture in air absorbs terahertz waves, weakening the signal and sensing capabilities.

Terahertz waves leak out of a small slit in the antenna at different angles, depending on frequency.

They showed that this kind of interference indeed occurs in terahertz waves, but occurs to a lesser degree over grass compared to concrete.

As terahertz waves travel down the waveguide, some of the radiation leaks out of the slit.

This work has shown theoretically and by means of simulations how beam steerers and power splitters work for terahertz waves, and is of tremendous importance in view of their huge potential in sectors like security, biomedical engineering, pharmacy, space, etc..

Scientists and engineers have only recently begun exploring the potential of terahertz waves, however.

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.

For the study, Mittleman and his colleagues bounced terahertz waves at four different frequencies off of a variety of objects — mirrors, metal doors, cinderblock walls and others — and measured the bit - error - rate of the data on the wave after the bounces.

Passing terahertz waves through an object renders a spectral fingerprint of its chemical composition.

Unfortunately, terahertz waves do not propagate very well through the air, limiting their practical applications.

Because this frequency (which exists in the electromagnetic spectrum between the infrared and microwave bands) is able to penetrate many optically opaque barriers, terahertz waves effective at longer range hold potential for detecting hidden explosives, chemicals and other dangerous materials while allowing security personnel to keep their distance.

That has researchers thinking about transmitting data on higher - frequency terahertz waves, which have as much as 100 times the data - carrying capacity of microwaves.

They've developed what they believe to be the first system for multiplexing terahertz waves.

It may also be of potential benefit in health care, where terahertz waves can be used to detect cancer.

TERAHERTZ IMAGING Long, penetrating terahertz waves (between microwaves and infrared on the electromagnetic spectrum) can see through packaging, plastic, shoes, and clothes, making concealed explosives stand out against an image of the naked body.

Using computer simulations, they calculated how terahertz waves would interact with cylinders of varying heights and widths.

Researchers at Chalmers are the first to have shown that graphene based transistor devices could receive and convert terahertz waves, a wavelength located between microwaves and infrared light, and the results were published in the journal IEEE Transactions on Microwave Theory and Techniques.

By utilizing terahertz waves in electronics, future data traffic can get a big boost forward.

Low - energy terahertz waves are good for probing materials without damaging them, and so are often used in airport security systems.

I mean I used to hear this kind of thing: Well, you know terahertz waves, you know they don't let us see and disable.

«Damaged steel wires on concrete and steel bridges now visible with terahertz waves.»

Terahertz waves occupy a large segment of the electromagnetic spectrum between the infrared and microwave bands.

The Rensselaer Center for Terahertz Research is one of the most active groups worldwide to apply terahertz wave technology for security and defense applications.

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.

That's likely because grass has lots of water, which tends to absorb terahertz waves.

It turns out that terahertz waves leak out a different angles depending on their frequency.

In their instrument, terahertz waves travel down one wire and back up the other, conveying information about targets in the body much as ultrasonic pulses do in echolocation.

The team also found that contrary to the radioactive rays conventionally used for non-destructive detection purposes, the new terahertz waves have no adverse effects on the human body.

Terahertz waves, sometimes called T - rays, can penetrate fabrics, cardboard and skin but can not pass as readily through harder, denser materials such as metal and bone.

Terahertz waves have a much higher frequency and therefore more potential bandwidth.

Unlike microwaves, terahertz waves are entirely blocked by most solid objects.

The technology can also identify some substances, liquids included, by the way they absorb terahertz waves.

Terahertz waves are invisible, but incredibly useful; they can penetrate many materials which are opaque to visible light and they are perfect for detecting a variety of molecules.

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.

«Graphene and terahertz waves could lead the way to future communication.»

«Our proposed devices can retain the terahertz frequency like other terahertz sources but with a much shorter wavelength for an improved spatial resolution in imaging application as well as a very wide frequency tuning range from a microwave to a terahertz wave,» said Iurov.

This enables non-destructive imaging of the inside of PC steel wire to be carried out without removing the external resin cover by making use of the terahertz wave characteristics that efficiently reflect metal surfaces within the resin.