碳纳米管惯性天平的材料限制：在室温下本征质量分辨的可能性
Material limitations of carbon-nanotube inertial balances: on the possibility of intrinsic yoctogram mass resolution at room temperature
摘要：
本文从理论上研究了碳纳米管弯曲振动的固有品质因数及其与温度、半径、长度和张力的关系。特别是，我们研究三，四声子衰减的基本弯曲模式内的量子化弹性理论。该分析揭示了超灵敏纳米管质量传感器的构造的设计原理：在接近弹性限度的张力下，固有损耗允许在室温下进行\emph{single yoctogram}质量分辨率，而冷却打开了\emph{sub-yoctogram}质量分辨率的可能性。
英文摘要：
We present a theoretical study of the intrinsic quality factor of the fundamental flexural vibration in a carbon nanotube and its dependence on temperature, radius, length and tension. In particular, we examine three- and four-phonon decays of the fundamental flexural mode within quantized elasticity theory. This analysis reveals design principles for the construction of ultrasensitive nanotube mass sensors: under tensions close to the elastic limit, intrinsic losses allow for \emph{single yoctogram} mass resolution at room temperature, while cooling opens the possibility of \emph{sub-yoctogram} mass resolution.
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