用表面声波(SAW)传感器研究了在液相中工作的粘弹性层状系统的动力学

A. Vikström, M.V. Voinova
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引用次数: 1

摘要

我们从理论上研究了表面声波传感器的三层连续体模型,其中两层允许是粘弹性的。这种情况在生物传感中尤为重要,因为软材料浸没在液体中是司空见惯的。从一般色散方程出发,计算了相速度位移和波衰减。我们表明,在覆盖层之间存在粘弹性耦合,导致不直观的行为,例如,在软膜传感器上添加粘性载荷可以减少衰减。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Dynamics of Viscoelastic Layered Systems Studied by Surface Acoustic Wave (SAW) Sensors Operated in a Liquid Phase

We theoretically study a three-layer continuum model of a surface acoustic wave sensor where the two overlayers are allowed to be viscoelastic. This case is particularly important in biosensing, where soft materials submerged in fluids are commonplace. From the general dispersion equation, we calculate the phase velocity shift and the wave attenuation. We show that there is a viscoelastic coupling between the overlayers which results in unintuitive behavior, e.g., the addition of viscous loading to a soft-film sensor can reduce the attenuation.

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