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      Multifunctional carbon nanotube yarns by downsizing an ancient technology.

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          Abstract

          By introducing twist during spinning of multiwalled carbon nanotubes from nanotube forests to make multi-ply, torque-stabilized yarns, we achieve yarn strengths greater than 460 megapascals. These yarns deform hysteretically over large strain ranges, reversibly providing up to 48% energy damping, and are nearly as tough as fibers used for bulletproof vests. Unlike ordinary fibers and yarns, these nanotube yarns are not degraded in strength by overhand knotting. They also retain their strength and flexibility after heating in air at 450 degrees C for an hour or when immersed in liquid nitrogen. High creep resistance and high electrical conductivity are observed and are retained after polymer infiltration, which substantially increases yarn strength.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Nov 19 2004
          : 306
          : 5700
          Affiliations
          [1 ] NanoTech Institute and Department of Chemistry, University of Texas at Dallas, Richardson, TX 75083, USA.
          Article
          306/5700/1358
          10.1126/science.1104276
          15550667
          cf621a5a-dfb2-4ac5-bec9-53675419aaf8
          History

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