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首页> 外文期刊>Analytical chemistry >MASS SENSITIVITY OF THE THIN-ROD ACOUSTIC WAVE SENSOR OPERATED IN FLEXURAL AND EXTENSIONAL MODES
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MASS SENSITIVITY OF THE THIN-ROD ACOUSTIC WAVE SENSOR OPERATED IN FLEXURAL AND EXTENSIONAL MODES

机译：弯曲和扩展模式下的细杆声波传感器的质量灵敏度

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摘要

The mass sensitivities of the thin-rod acoustic wave sensor in both flexural and extensional acoustic modes are presented, These are based on experiments involving the electrodeposition of a test loading material onto a thin metal fiber (the thin rod) in a delay line configuration. Only small changes in acoustic loss occur when the device is immersed in an electrolyte, particularly in the flexural mode, Copper and lead have been used as test materials to confirm that the effects of elasticity can give rise to positive and negative mass sensitivities, respectively, The experimental and theoretical values all agree in sign and are of the same order of magnitude, This result confirms a refined theoretical model that includes incorporation of the effects of elasticity and inertia, An increase in experimental mass sensitivity with decrease in fiber radius is one of the advantages for the construction of a sensitive chemical sensor based on the thin-rod device, The sensor can be operated with facility in both gas and liquid phases and offers a new technique for the study of interfacial electrochemistry on metal surfaces. The phenomenon of mechanical resonance was observed during a number of experiments.
机译：介绍了细杆声波传感器在挠曲和拉伸声模下的质量灵敏度，这些灵敏度是基于涉及将测试加载材料以延迟线配置电沉积到细金属纤维（细杆）上的实验的。当将设备浸入电解质中时，尤其是在弯曲模式下，只有很小的声损耗变化，铜和铅已用作测试材料，以确认弹性的影响分别会引起正负质量敏感性，实验值和理论值都在符号上一致，并且处于相同的数量级，这一结果证实了一个精炼的理论模型，其中包括了弹性和惯性的影响，实验质量灵敏度的提高与纤维半径的减小是其中之一。该传感器可以在气相和液相中进行操作，并为研究金属表面的界面电化学提供了新技术。在许多实验中观察到机械共振现象。

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