室温下金刚石楔驱动碳纳米管旋转
Driving carbon nanotube to rotate by diamond wedges at room temperature
摘要：
介绍了一种由碳纳米结构制成的旋转纳米管。通过在碳纳米管外部旋转对称地布置金刚石楔（或针），并且金刚石的[100]方向沿着管的轴向，楔针尖可以在室温下驱动纳米管以千兆赫频率旋转。在热振动期间，纳米管中的一些原子与针尖碰撞。在碰撞过程中，尖端为原子提供连续的排斥力。排斥力的切向分量在纳米管上产生绕管轴的力矩。因此，纳米管被该力矩驱动旋转。当同心外管提供抵抗针尖排斥的等效电阻时，转子达到稳定旋转。分子动力学模拟结果表明，针尖的稳定性影响转子的旋转频率。潜在的制造这样的纳米粒子说明考虑小型化。旋转马达可以作为纳米机器中的发动机。
英文摘要：
A rotary nanomotor made of carbon nanostructures is introduced here. Through a rotationally symmetrical layout of diamond wedges (or needles) outside of a carbon nanotube and with the [100] direction of diamond along the tube's axial direction, the wedge needle tips can drive the nanotube to rotate at gigahertz frequency at room temperature. During thermal vibration, some of the atoms in the nanotube collide with the needle tips. The tips provide the atoms with continuous repulsion during collision. The tangential component of the repulsion force produces a moment onto the nanotube about the tube axis. Consequently, the nanotube is driven to rotate by the moment. The rotor reaches stable rotation when the concentric outer tubes provide equivalent resistance against the repulsion from needle tips. Molecular dynamics simulation results indicate that the stability of the needle tips influences the rotational frequency of the rotor. Potential fabrication of such a nanomotor is illustrated with consideration of miniaturization. The rotary motor can act as an engine in a nanomachine.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
