Simultaneous determination of density and viscosity of liquids based on resonance curves of uncalibrated microcantilevers
Simultaneous determination of density and viscosity of liquids based on resonance curves of uncalibrated microcantilevers
复制标题
基于未校准微悬臂梁共振曲线同时测定液体密度和粘度
DOI：
10.1063/1.2374867
复制
发表时间：
2006
影响因子：
4
通讯作者：
G. Hähner
中科院分区：
文献类型：
--
作者：
Neal McLoughlin;Stephen L. Lee;G. Hähner
在水/乙醇混合溶剂中测量了磁力驱动的非校准原子力显微镜悬臂梁的响应。分别使用在纯水和纯乙醇中记录的数据来提取系统共振行为的特征参数。然后使用这些参数来确定混合物的粘度和密度值。所得结果的∼为文献值的5%。本文介绍的方法允许研究小体积(约为微升)的液体，并且不需要任何关于弹簧常数或微悬臂梁几何形状的知识。
The response of magnetically driven noncalibrated atomic force microscope cantilevers was measured in water/ethanol mixtures. Data recorded in pure water and in pure ethanol were used independently to extract parameters characteristic of the resonance behavior of the system. These parameters were then employed to determine the viscosity and density values of the mixtures. The values obtained are within ∼5% of those published in the literature. The procedure presented allows small volumes (approximately microliters) of liquids to be investigated and does not require any knowledge of the spring constant or the geometry of the microcantilever.