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Scanning Electron Microscope image shows a few of the carefully designed shaped of the chalcogenide glass deposited on a clear substrate. The shapes, which the researchers call “meta-atoms,” determine how mid-infrared light is bent when passing through the material. Courtesy of the researchers

Improving mid-infrared imaging and sensing

The mid-infrared (mid-IR) band of electromagnetic radiation is an especially helpful piece of the range; it can give imaging dark, follow heat signatures, and...