Effect of Gaseous Dissipation of Oscillating Cantilevered Carbon Nanotubes
Effect of Gaseous Dissipation of Oscillating Cantilevered Carbon Nanotubes
复制标题
振荡悬臂碳纳米管的气体耗散效应
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
S. Akita
中科院分区：
文献类型：
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作者：
S. Fukami;T. Arie;S. Akita
我们研究了气体分子对碳纳米管悬臂梁振动的阻尼效应。建立了一种检测气体分子振动的光学检测系统。气体分子引起的能量损失与102-104 Pa的压力成正比。在低于10 Pa的压力下，能量损失与纳米管振动能量的固有损失相比可以忽略不计。这是因为纳米管的尺寸比气体分子的平均自由程小得多。
We have investigated the damping effects of gas molecules on the vibration of a carbon nanotube cantilever. An optical detection system to detect the vibration in gaseous molecules was built. The energy loss induced by the gas molecules is proportional to a pressure at 102–104 Pa. At pressures below 10 Pa, the energy loss is negligible compared with the intrinsic loss of the vibration energy for the nanotube. This is because the size of the nanotube is much smaller than the mean free path of the gas molecules.