Researchers in the US have used metamaterials and 3D printing to create a lens that works at terahertz frequencies. “Not only does it have better imaging capabilities than common lenses, but it opens the door for more advances in the mysterious realm of the terahertz,” said Northwestern University. Rather than use several lenses of different refractive ...
from ElectronicsWeekly http://www.electronicsweekly.com/news/research-news/printing-thz-lenses-2016-05/
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