Carbon nanotubes have been used to develop a new type of ultra-sensitive photodetector that could revolutionize the way we use light-sensing technology. Researchers at the University of Texas at Austin, in partnership with engineers from Taiwan and China, have created a device that is able to detect light with unprecedented sensitivity. The nanotube photodetector is made up of a single-walled carbon nanotube (SWCNT) that is suspended in a liquid medium. When illuminated with light, it generates an electrical signal that is much stronger than that produced by conventional photodetectors. The device is able to detect light with a sensitivity that is several orders of magnitude higher than existing photodetectors. This breakthrough could have a huge impact on the way we use light-sensing technology, from medical imaging to surveillance.

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source: Phys.org