Results 151 to 160 of about 3,761 (206)

Electrorheological Fluids

Science, 1992
Suspensions of polarizable particles in nonpolarizable solvents form fibrillated structures in strong electric fields. The resulting increase in viscosity of these "electrorheological" fluids can couple electrical to hydraulic components in a servomechanism. The physical properties of these fluids are unusual owing to the long-range, anisotropic nature
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Rheology of electrorheological fluids

Physical Review Letters, 1992
We present experimental and theoretical results on the shear thinning of electrorheological fluids. Rheological measurements on a model fluid consisting of monodisperse silica spheres immersed in a dielectric liquid show a power-law dependence \ensuremath{\mu}\ensuremath{\propto}\ensuremath{\gamma}${\mathrm{\ifmmode \dot{}\else \.{}\fi{}}}^{\mathrm ...
, Halsey, , Martin, , Adolf
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Electrorheological Fluid Hysteresis

Materials, 2005
Electrorheological (ER) fluids are suspensions of polarizable particles dispersed in insulating liquids. They exhibit a rapid and reversible transition from a liquid-like to a solid-like state upon the application of an electric field. The observed shear stress - shear rate hysteresis makes the precise control of the ER mechanical devices very ...
Young Dae Kim, Daniel De Kee
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Negative electrorheological fluids

Journal of Rheology, 2013
Electrorheological (ER) fluids are electroresponsive materials that have been extensively investigated for several decades. Despite negative ER fluids being one of the most promising new class of candidate materials for various potential applications, only positive ER fluids have been widely used thus far.
Young Gun Ko, Ung Su Choi
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Analysis of giant electrorheological fluids

Journal of Colloid and Interface Science, 2013
The yield stress dependence on electric field strength for giant electrorheological (GER) fluids over the full range of electric fields was examined using Seo's scaling function which incorporated both the polarization and the conductivity models. If a proper scaling was applied to the yield stress data to collapse them onto a single curve, the Seo's ...
Youngwook P, Seo, Yongsok, Seo
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Boundary effect in electrorheological fluids

Physical Review E, 2011
The effect of the boundary friction coefficient on the rheological properties of the electrorheological (ER) fluids in quasistatic and dynamic states is investigated by computer simulation. The relation between the shear stress and the boundary friction coefficient in quasistatic and dynamic states is discussed qualitatively and quantitatively, and the
X L, Gong, F, Yang, S H, Xuan, L H, Zong, W, Zhu, W Q, Jiang   +5 more
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Electrorheological fluids: structures and mechanisms

Soft Matter, 2008
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.
Wen, Weijia, Huang, Xianxiang, Sheng, Ping   +2 more
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Electro-osmosis of electrorheological fluids

Physical Review E, 2013
Electrorheological fluids are suspensions that are characterized by a strong functional dependence of the constitutive behavior of the fluids on the electric field. In this work, we consider electro-osmosis of an electrorheological fluid through a channel where a transverse, nonuniform electric field is spontaneously induced due to the presence of an ...
Jayabrata, Dhar, Aditya, Bandopadhyay, Suman, Chakraborty   +2 more
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Continuum modelling of electrorheological fluids

Electrorheological Fluids and Magnetorheological Suspensions, 2002
A thermodynamical continuum modelling is proposed for electrorheological fluids. This theormodynamical approach tries to describe the response of an electrorheological fluid in the solid phase (which means with an applied adequate electric field) under mechanical solicitations. Thermodynamic formulations distinguish the contributions due to reversible
DROUOT R, NAPOLI, Gaetano, RACINEUX G.
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Electrorheological effects of polyaniline‐type electrorheological fluids

Journal of Applied Polymer Science, 2002
AbstractThree kinds of particles—polyaniline (PANI), poly(o‐toludine) (POT), and brominated polyaniline (Br‐PANI)—were synthesized. With chlorinated paraffin as a disperse oil, their electrorheological (ER) effects were determined so that the influence of the phenyl substitute group on the ER effects could be considered.
Liucheng Zhang, Kai Su, Xiucuo Li
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