arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1711.04446cond-mat.mes-hall
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微透镜optical fiber干涉仪测量纳米线弯曲振动方向

Determining the direction of a nanowire's flexural vibrations by micro-lens optical fiber interferometer

Chenghua Fu, Wen Deng, Lvkuan Zou, Wanli Zhu, Ning Wang, Fei Xue

摘要:

纳米线是超灵敏检测力和质量的理想传感器。对于小质量传感,最近的进展,在检测更多的属性比它们的质量与高灵敏度的纳米线上的吸收粒子依赖于两个正交的弯曲振动模式的纳米线的识别。这些正交弯曲振动相对于测量方向的方向是振动模式的关键参数。然而,使用热振动确定纳米线的振动方向的先前方法需要以足够的灵敏度同时检测纳米线的两个正交弯曲振动。本文提出并实现了一种利用微透镜光纤干涉仪测量纳米线弯曲振动方向的方法。我们的方法结合了纳米线的光干涉和光散射。它不需要检测一对退化的正交弯曲振动模式。因此,我们的方法有望在表征纳米线的振动及其应用方面有广泛的用途。

英文摘要:

Nanowires are perfect transducers for ultra-sensitive detections of force and mass. For small mass sensing, recent advances in detecting more properties than their masses with high sensitivity for absorbed particles onto a nanowire rely on identifications of two orthogonal flexural vibration modes of the nanowire. The directions of these orthogonal flexural vibrations with respect to measurement direction are crucial parameters of vibration modes. However, previous method, which determines a nanowire's vibration direction using thermal vibrations, requires simultaneously detecting of two orthogonal flexural vibrations of the nanowire with sufficient sensitivity. In this work, we propose and realize a method for the determination of directions of a nanowire's flexural vibrations by micro-lens optical fiber interferometer. Our method combines the light interference and light scattering of the nanowire. It does not require detecting a pair of degenerated orthogonal flexural vibration modes. Therefore, our method is expected to have wide usages in characterizing nanowire's vibrations and their applications.

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。

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