Photo: Greg Hren
MIT researchers have created an optical fiber whose brightness can be varied along its length. Its creators envision the flexible fiber being woven into “fabrics” that can be used to make 3-D displays and medical devices that can irradiate diseased tissue while leaving healthy tissue unaffected.











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Willie Jones
Willie Jones is an associate editor at IEEE Spectrum. In addition to editing and planning daily coverage, he manages several of Spectrum's newsletters and contributes regularly to the monthly Big Picture section that appears in the print edition.
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