Electrorheological fluids: structures and mechanisms

@article{citeulike:2911575, abstract = {Electrorheology denotes the control of a colloid's flow properties through an electric field. We delineate the basic characteristics of electrorheological (ER) fluids, and show that the use of an effective dielectric constant concept can yield quantitative predictions. In particular, the ground state structure, the structural transition that occurs under crossed electric and magnetic fields, the high-field yield stress and its variation with particle size are all in good agreement with the experiments. The recently discovered giant electrorheological effect, owing its origin to molecular dipoles, is described and contrasted with the conventional ER effect that arises from induced polarization effects. Graphical abstract image for this article (ID: b710948m)}, author = {Wen, Weijia and Huang, Xianxiang and Sheng, Ping }, citeulike-article-id = {2911575}, journal = {Soft Matter, 2008, 4, 200 - 210, DOI: 10.1039/b710948m}, keywords = {2008, colloids, control, electric, field}, posted-at = {2008-06-20 23:02:52}, priority = {2}, title = {Electrorheological fluids: structures and mechanisms} }

TY - JOUR ID - citeulike:2911575 L3 - citeulike-article-id:2911575 TI - Electrorheological fluids: structures and mechanisms JF - Soft Matter, 2008, 4, 200 - 210, DOI: 10.1039/b710948m N2 - Electrorheology denotes the control of a colloid's flow properties through an electric field. We delineate the basic characteristics of electrorheological (ER) fluids, and show that the use of an effective dielectric constant concept can yield quantitative predictions. In particular, the ground state structure, the structural transition that occurs under crossed electric and magnetic fields, the high-field yield stress and its variation with particle size are all in good agreement with the experiments. The recently discovered giant electrorheological effect, owing its origin to molecular dipoles, is described and contrasted with the conventional ER effect that arises from induced polarization effects. Graphical abstract image for this article (ID: b710948m) KW - 2008 KW - colloids KW - control KW - electric KW - field AU - Wen, Weijia AU - Huang, Xianxiang AU - Sheng, Ping ER -