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Scientists Invent Long-lasting, Near Infrared-emitting Material

Materials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now, scientists have had little success creating materials that emit light in the near-infrared range, a portion of the spectrum that only can be seen with the aid of night vision devices.

Now, a new study describes a new material that emits a long-lasting, near-infrared glow after a single minute of exposure to sunlight. Scientists say the material has the potential to revolutionize medical diagnostics, give the military and law enforcement agencies a "secret" source of illumination and provide the foundation for highly efficient solar cells.

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