Polar-Molecule-Dominated Electrorheological (Pm-Er) Fluids: The Properties and Evaluations

Abstract

In recent years, a new type ER fluids named as polar-molecule-dominated electrorheological (PM-ER) fluids have been developed, of which the yield stress can reach more than 100 kPa and behaves a linear dependence on the electric field. A brief description on the composition and synthesizing method for the materials is given. The main merits of PM-ER fluid are as follows: high yield stress, the shear stress increasing with shear rate up to more than 10 3 s −1 , low current density, rapid electric response and anti-sedimentation. Some perspectives on PM-ER fluid and its applications are presented.

Nanoparticle enhanced evaporation of liquids: A case study of silicone oil and water

“…7,8 However, the implementation of these electrorheological fluids confronts an annoying problem, that is, for some particular combinations of oil and nanoparticle, the oil which is almost permanently stable by itself in the same conditions will disappear very quickly via evaporation. 10 We are thus led to the question as which features of the nanoparticles have caused the fast evaporation of the liquids. The answer to this question is expected to provide clues for the development of strategies and methods for the enhancement or suppress of liquid evaporation, which is of essential importance to, among others, the removal of oil pollution and polluted water, and to ameliorate the quality of draught-prone soils.…”