Tokunaga Tomoharu, Hayashi Yasuhiko, Iijima Toru, Uesugi Yuki, Unten Masaki, Sasaki Katsuhiro, Yamamoto Takahisa
Department of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan.
Department of Electric Engineering, Okayama University, Tsushimanaka, 3-1-1, Kita-ku, Okayama 700-8530, Japan.
Micron. 2015 Jul;74:30-4. doi: 10.1016/j.micron.2015.04.004. Epub 2015 Apr 20.
Carbon nanotube (CNT) yarns are fabricated by drawing (combined with spinning) from CNT forests and grown on a substrate. Three types of phenomena occur in these CNT yarns with increasing amounts of current: yarn rotation, catalyst evaporation, and breakage of the yarn. These phenomena result from the resistive heating occurring during the current flow, and have been observed in situ under vacuum by transmission electron microscopy. If these CNT yarns are applied to electronic circuits, the rotation and breakage may lead to circuit failure. However, catalyst evaporation is a useful method for purifying CNT yarns without additional treatments prior to yarn fabrication.
碳纳米管（CNT）纱线是通过从碳纳米管森林中拉伸（结合纺丝）并在基底上生长而制成的。随着电流增加，这些碳纳米管纱线会出现三种现象：纱线旋转、催化剂蒸发和纱线断裂。这些现象是由电流流动过程中产生的电阻加热引起的，并且已经通过透射电子显微镜在真空环境中原位观察到。如果将这些碳纳米管纱线应用于电子电路，旋转和断裂可能会导致电路故障。然而，催化剂蒸发是一种在纱线制造前无需额外处理就能纯化碳纳米管纱线的有用方法。
