碳纳米管横向振动模通过“梭形”机电不稳定性的选择性激发
Selective excitations of trasverse vibrational modes of a carbon nanotube through a "shuttle-like" electromechanical instability
摘要：
我们研究了电流从扫描隧道显微镜（STM）的尖端注入到悬浮的碳纳米管中的横向振荡动力学。在这种情况下，纳米管的位移和它的电荷状态之间的相关性，由位置依赖的电子隧穿速率确定，可以导致横向振动模式的“梭状”不稳定性。我们发现，一个特定的模式的选择性激发可以通过STM针尖的准确定位来实现。这一结果为基于“航天飞机不稳定性”控制纳米机电系统的动力学行为提供了一种可行的方法。
英文摘要：
We study the dynamics of transverse oscillations of a suspended carbon nanotube into which current is injected from the tip of a scanning tunneling microscope (STM). In this case the correlations between the displacement of the nanotube and its charge state, determined by the position-dependent electron tunneling rate, can lead to a "shuttle-like" instability for the transverse vibrational modes. We find that selective excitation of a specific mode can be achieved by an accurate positioning of the STM tip. This result suggests a feasible way to control the dynamics of this nano-electromechanical system (NEMS) based on the "shuttle instability".
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。
