![]() However, the results become increasingly dependent on the cantilever geometry as the frequency-dependent nature of the liquid's viscosity becomes more significant.Īccurate and rapid determination of the density and viscosity of liquids is central to countless industrial, technological and scientific processes. Application of our model to non-Newtonian fluids shows that the calculated viscosities are remarkably robust when compared to measurements obtained from a standard rheometer. We derive analytical expressions for the liquid's density and viscosity and validate our approach with several simple liquids and different cantilevers. The method, based solely on the measurement of two characteristic frequencies of an immersed microcantilever, is completely independent of the choice of a cantilever. Here we present a new approach able to simultaneously quantify both the density and the viscosity of microliters of liquids. These problems can partly be overcome with the use of microcantilevers but most existing methods depend on the specific geometry and properties of the cantilever, which renders simple, accurate measurement difficult. Such measurements can be time consuming and often require sampling substantial amounts of the liquid. ![]() ![]() Many industrial and technological applications require precise determination of the viscosity and density of liquids.
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