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   Charles Q. Choi   
   02 Feb 2023   
      
   Twistrons, made from spun carbon nanotubes (CNTs), convert   
   mechanical movement into electricity. UT Dallas researchers   
   made a new kind of twistron by intertwining three individual   
   strands of spun carbon nanotube fibers to make a single yarn.   
   Their method was similar to the way conventional yarns used in   
   textiles are constructed.   
      
   Novel yarns made with carbon nanotubes can generate electricity   
   from mechanical energy better than any other material to date,   
   a new study finds.   
      
   The high-tech yarns, known as twistrons, can be sewn into   
   clothes to produce electricity from human motion or deployed in   
   the ocean to harvest energy from waves, researchers say.   
      
   Electromagnetic generators, which essentially function as   
   electric motors run in reverse, have long been used to convert   
   mechanical energy from wind and water to electricity. Although   
   these perform well on large scales, they perform much less well   
   on smaller scales. Therefore, researchers have investigated a   
   wide variety of materials to harvest mechanical energy-for   
   instance, using body motions to power wearable electronics.   
      
   Scientists first reported the invention of twistrons about five   
   years ago. They created these materials by spinning carbon   
   nanotubes into high-strength, lightweight fibers that can also   
   incorporate electrolytes. Twisting or stretching these yarns   
   increases their density, which in turn generates a voltage that   
   can drive an electric current.   
      
   "Our dream in the future is to be able to use our twistrons to   
   harvest the mechanical energy in the oceans to power cities,"   
   says study senior author Ray Baughman, a materials scientist at   
   the University of Texas at Dallas.   
      
   [Full article]: https://spectrum.ieee.org/twistronics   
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