Mass response of the thickness-shear mode acoustic wave sensor in liquids as a central misleading dogma
Mass response of the thickness-shear mode acoustic wave sensor in liquids as a central misleading dogma
复制标题
液体中厚度剪切模式声波传感器的质量响应作为中心误导法则
DOI：
10.1109/freq.1997.638529
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
G. Hayward
中科院分区：
文献类型：
--
作者：
M. Thompson;G. Hayward
经常尝试将振荡AT切割装置的串联谐振频率的偏移与从声波传感器的表面添加或移除的质量相关联。对于在液相中操作的传感器，尽管能量传播到液体介质中的事实，但该领域的文献显示出将Sauerbrey模型与实验结果强制拟合的明显趋势。实际上，串联谐振频率由一系列复杂的因素决定，例如界面自由能、分子滑移、表面应力和粗糙度以及声电效应。这种坚持质量响应模型的趋势的一个不幸的后果是，声波传感器提供的极其令人兴奋的承诺，在任何模式下操作，特别是在生物大分子的研究中，仍然在很大程度上未被认识。实际上，广泛传播的信念是，例如，横向剪切模式（TSM）装置与基于光学的装置相比是非常“不敏感的”。本论文将precis一个新的模型，它描述了声能量传播到周围的TSM设备的液体。
Attempts are often made to correlate a shift in series resonant frequency of an oscillating AT-cut device with mass added or removed from the surface of the acoustic wave sensor. For sensors operated in the liquid phase, despite the fact that energy is propagated into the liquid medium, the literature in this field displays a marked tendency to force-fit the Sauerbrey model to experimental results. In reality, the series resonant frequency is governed by a complex array of factors such as interfacial free energy, molecular slip, surface stress and rugosity as well as acousto-electric effects. An unfortunate consequence of the tendency of this adherence to the mass response model is that the extremely exciting promise offered by the acoustic wave sensor, operated in whatever mode, particularly in the study of biological macromolecules, has remained largely unrecognized. Indeed, there is a wide spread belief that the transverse shear mode (TSM) device, for example, is very "insensitive" compared to optical-based devices. The present paper will precis a new model which describes acoustic energy propagation into liquids surrounding the TSM device.