纳米梁谐振器的粘性阻尼：湿度、热噪声和划桨效应
Viscous damping of nanobeam resonators: humidity, thermal noise and the paddling effect
摘要：
纳米梁谐振器是纳米机电系统中的关键机械部件。除了源自其低尺寸的高频率之外，性能还受到环境的显著影响，特别是在纳米尺度下，材料的大表面积暴露在外。利用分子动力学模拟和理论分析对纳米梁谐振器的阻尼行为进行了定量预测，如临界阻尼条件和寿命，直接将流体-结构特性和相互作用信息映射到动力学行为中。我们在这里展示了湿度如何通过粘性力定义临界阻尼条件，标志着在高湿度下从欠阻尼过渡到过阻尼状态。文中还讨论了一些新现象，如热涨落和划桨效应。
英文摘要：
The nanobeam resonator is the key mechanical component in the nano-electromechanical system. In addition to its high frequency originating from its low dimension, the performance is significantly influenced by the circumstances, especially at nanoscale where a large surface area of the material is exposed. Molecular dynamics simulations and theoretical analysis are used for a quantitative prediction on the damping behavior, such as the critical damping condition and lifetime, of nanobeam resonators that directly maps the fluid-structure properties and interaction information into dynamical behaviors. We show here how the humidity defines the critical damping condition through viscous forces, marking the transition from under-damping to over-damping regime at elevated humidity. Novel phenomena such as the thermal fluctuation and paddling effects are also discussed.
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。
