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"T-rays" could lead to safer medical imaging

• gizmag.com
The advance opens up new applications ranging from tighter airport security to safer medical imaging.

Engineers know very well how to manipulate a wide spectrum of electromagnetic waves to send and receive signals. However, waves with frequencies ranging from 0.1 to 10 THz have so far been a very difficult customer. Their frequencies are too high to be measured directly by current-gen electronics, so scientists must rely on measuring their physical properties, such as their energy and wavelength. We have ways to do just that, but they are highly inefficient and impractical because, among other things, such devices need to be cooled down to work properly.

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