By bombarding an ultrathin semiconductor sandwich with powerful laser pulses, physicists have created the first ‘electron liquid’ at room temperature. The achievement opens a pathway for development of the first practical and efficient devices to generate and detect light at terahertz wavelengths – between infrared light and microwaves. Such devices could be used in applications as diverse as communications in outer space, cancer detection, and scanning for concealed weapons.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2019/02/190204114610.htm
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