Rheological measurements using microcantilevers

Abstract

An attempt was made to demonstrate for the first time that the frequency response of microcantilevers can be used to measure the density and viscosity of both gases and liquids. This was achieved by employing the theoretical model of Sader for the frequency response of AFM cantilevers immersed in viscous fluids. Using a single microcantilever, the density and viscosity of both gases and liquids were measured simultaneously. The measured densities and viscosities were compared against published literature values.