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首页> 外文期刊>Review of Scientific Instruments >A new method of Q factor optimization by introducing two nodal wedges in a tuning-fork/fiber probe distance sensor
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A new method of Q factor optimization by introducing two nodal wedges in a tuning-fork/fiber probe distance sensor

机译:通过在音叉/光纤探头距离传感器中引入两个节点楔来优化Q因子的新方法

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摘要

We report on a new method of achieving and optimizing a high Q factor in a near-field scanning optical microscope (NSOM) by introducing two nodal wedges to a tuning-fork/fiber probe distance sensor and by selecting a vibrational mode of the dithering sensor. The effect of the nodal wedges on the dynamical properties of the sensor is theoretically analyzed and experimentally confirmed. The optimization achieved by the proposed method is understood from the vibration isolation and the subsequent formation of a local vibration cavity. The optimal condition is found to be less susceptible to the variation of the fiber tip length. This method allows effective NSOM measurement of samples placed even in aqueous solution. © 2010 American Institute of Physics Article Outline INTRODUCTION MODELING AND CALCULATIONS EXPERIMENTS CONCLUSIONS
机译:我们报告了一种在近场扫描光学显微镜(NSOM)中实现和优化高Q因子的新方法,该方法是通过向音叉/光纤探针距离传感器中引入两个节点楔形并选择抖动传感器的振动模式来实现。理论上分析和实验证实了节点楔对传感器动力学特性的影响。从振动隔离和随后形成局部振动腔可以理解通过所提出的方法实现的优化。发现最佳条件对纤维尖端长度的变化较不敏感。这种方法即使在水溶液中也可以有效地测量样品的NSOM。 ©2010美国物理研究所文章大纲简介建模与计算实验结论

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