Nanotorsional actuator using transition between flattened and tubular states in carbon nanotubes
Nanotorsional actuator using transition between flattened and tubular states in carbon nanotubes
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DOI：
10.1063/1.3684275
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发表时间：
2012-02
影响因子：
4
通讯作者：
Ryosuke Senga;K. Hirahara;Y. Nakayama
中科院分区：
文献类型：
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作者：
Ryosuke Senga;K. Hirahara;Y. Nakayama
我们通过实验研究了由碳纳米管 (CNT) 组成的扭转致动器。透射电子显微镜显示，碳纳米管从室温下能量稳定时的扁平状态可逆地改变为管状状态，具体取决于施加到碳纳米管的电流量。扁平的碳纳米管可以扭曲，其扭曲角度取决于其手性和长度。从扁平状态到管状状态的转变反转了扭转并产生了大约 100°C 的扭矩。 5 nN·nm，比人工生物纳米旋转装置强50倍。
We experimentally investigated a torsional actuator consisting of a carbon nanotube (CNT). Transmission electron microscopy revealed that the CNT, from its flattened state when energetically stable at room temperature, changes states reversibly to a tubular state depending on the amount of current applied to the CNT. The flattened CNT can be twisted, with its twist angle dependent on its chirality and length. The transition from the flattened state to the tubular state reverses the twist and generates a torsional torque as strong as ca. 5 nN·nm, which is 50 times stronger than that of an artificial bionanorotary device.