Chen Zhenmin, Wu Xiang, Liu Liying, Xu Lei
Key Lab for Micro and Nanophotonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.
Department of Physics, Fudan University, Shanghai 200433, China.
Sensors (Basel). 2017 Sep 30;17(10):2256. doi: 10.3390/s17102256.
In this work, we present a novel approach for obtaining the effective mass of mechanical vibration mode in micro-bubble resonators (MBRs). To be specific, the effective mass is deduced from the measurement of optical spring effect (OSE) in MBRs. This approach is demonstrated and applied to analyze the effective mass of hollow MBRs and liquid-filled MBRs, respectively. It is found that the liquid-filled MBRs has significantly stronger OSE and a less effective mass than hollow MBRs, both of the extraordinary behaviors can be beneficial for applications such as mass sensing. Larger OSE from higher order harmonics of the mechanical modes is also observed. Our work paves a way towards the developing of OSE-based high sensitive mass sensor in MBRs.
在这项工作中，我们提出了一种获取微泡谐振器（MBR）中机械振动模式有效质量的新方法。具体而言，有效质量是从MBR中光学弹簧效应（OSE）的测量中推导出来的。该方法分别被用于分析空心MBR和充液MBR的有效质量。结果发现，充液MBR具有比空心MBR更强的OSE和更小的有效质量，这两种特殊行为都有利于诸如质量传感等应用。还观察到来自机械模式高阶谐波的更大的OSE。我们的工作为在MBR中开发基于OSE的高灵敏度质量传感器铺平了道路。
