论文标题
电混合测量的纳米力学振动响应
Nanomechanical vibrational response from electrical mixing measurements
论文作者
论文摘要
基于低维材料的驱动纳米力学谐振器通常通过电混合测量值常规有效地检测到。但是，测得的信号是机械本本征置位移和电贡献的非平凡组合，这使得提取了驱动的机械响应具有挑战性。在这里，我们报告了一种简单但可靠的方法，可以通过消除纯电源的贡献来仅提取驱动的机械振动。这使我们能够测量光谱机械响应以及驱动的运动四次运动。我们进一步展示了如何将测量信号校准为位移单位。此外，我们利用纯电源贡献直接确定测得的机械模式的有效质量。我们的方法标志着基于线性和非线性方案中低维材料的纳米机电谐振器的研究迈出的关键一步。
Driven nanomechanical resonators based on low-dimensional materials are routinely and efficiently detected with electrical mixing measurements. However, the measured signal is a non-trivial combination of the mechanical eigenmode displacement and an electrical contribution, which makes the extraction of the driven mechanical response challenging. Here, we report a simple yet reliable method to extract solely the driven mechanical vibrations by eliminating the contribution of pure electrical origin. This enables us to measure the spectral mechanical response as well as the driven quadratures of motion. We further show how to calibrate the measured signal into units of displacement. Additionally, we utilize the pure electrical contribution to directly determine the effective mass of the measured mechanical mode. Our method marks a key step forward in the study of nanoelectromechanical resonators based on low-dimensional materials in both the linear and the nonlinear regime.
