Measurement of complex shear viscosity up to 3 GHz using an electrodeless AT-cut quartz transducer
Measurement of complex shear viscosity up to 3 GHz using an electrodeless AT-cut quartz transducer
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DOI：
10.35848/1347-4065/ac4141
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发表时间：
2022-07-01
影响因子：
1.5
通讯作者：
Matsuoka, Tatsuro
中科院分区：
文献类型：
--
作者：
Yamaguchi, Tsuyoshi;Matsuoka, Tatsuro
提出了一种基于石英晶体微天平的耗散法测定液体频率依赖型复数剪切粘度的实验方法。没有金属电极的AT切割石英换能器被浸入样品液体中，并且换能器通过样品本身的介电响应电耦合到电路。在校正由于样品的介电耦合引起的共振性质的明显变化后，我们的方法能够在高达3 GHz的频率下确定高极性和低粘度的液体的粘度。然后将该方法应用于乙二醇和粘弹性松弛在GHz政权进行了观察。此外，它也适用于室温离子液体，以表明介电校正的共振性质是有效的导电液体。
An experimental method is proposed to determine the frequency-dependent complex shear viscosity of liquids based on the quartz crystal microbalance with dissipation method. An AT-cut quartz transducer without metal electrodes is immersed in a sample liquid and the transducer is electrically coupled to the circuit through the dielectric response of the sample itself. After correcting for the apparent change in the resonance properties due to the dielectric coupling of the sample, our method is able to determine the viscosity of liquids of high polarity and low viscosity at frequencies as high as 3 GHz. The method was then applied to ethylene glycol and the viscoelastic relaxation in the GHz regime was observed. Furthermore, it was also applied to room-temperature ionic liquids to show that the dielectric correction of the resonance properties is valid for conductive liquids.