Identification of shear elasticity at low frequency in liquid n-heptadecane, liquid water and RT-ionic liquids [emim][Tf2N]

International audienceBy improving the boundary conditions between the sample and the substrate whereby the stress and the measurement are transmitted, novel dynamic experiments enable the detection of subtle properties as the identification of a no-zero low frequency shear elasticity in various liquids. This study is for the first time extended to molecular liquids as simple liquids (heptadecane), room temperature ionic liquids ([emim][Tf2N]) and water, confirming the generic character of the elastic properties identified at the sub-millimeter away from any phase transition