Secondary polarization in electrorheological phenomenon

Abstract

The Schematic illustration of the distribution of the electric field between two testing parallel-plates after the formation of chainlike structure in electrorheological fluids.

1D and 2D hybrid polymers based on zinc phenylphosphates: synthesis, characterization and applications in electroactive materials

“…For example, smart uids responding to electric elds (EFs), are formed by electricallypolarizable particles dispersed in a non-conducting liquid medium, [40][41][42][43] and may be utilized in dampers, valves, engine mounts, hydraulic actuators, squeeze mounts, medicine (e.g., in drug delivery or haptic medical devices), and food processing. [44][45][46][47] The industrial applications of currently known electrorheological (ER) uids are based on a positive ER effect, 44,47,48 resulting from the EF-controlled orientation of dispersed particles (e.g., metal oxides, 41,42 metal salts, 43 and modied polymeric particles 40 ) into chain-like structures accompanied by a transition of uid from liquid to viscoelastic system. However, there are many applications in which a controllable decrease in viscosity would be desirable (e.g., hydrostatic journal bearing for controlling rotor vibrations or squeeze lm damper for actively controlling rotor dynamics).…”

“… 44–47 The industrial applications of currently known electrorheological (ER) fluids are based on a positive ER effect, 44,47,48 resulting from the EF-controlled orientation of dispersed particles ( e.g. , metal oxides, 41,42 metal salts, 43 and modified polymeric particles 40 ) into chain-like structures accompanied by a transition of fluid from liquid to viscoelastic system. However, there are many applications in which a controllable decrease in viscosity would be desirable ( e.g.…”

Dielectric properties of modified montmorillonites suspensions in polydimethylsiloxane

“…In the literature, the change in dielectric characteristics of composite during filling is usually associated with the bulk properties of matrix and filler and with processes at the polymer–filler interface . In this case, the internal structure of filler and relaxation processes in the volume of filler itself usually did not receive significant attention, and the number of such works is limited . Thus, the aim of our research is to study the effects of modifier in MMT and water on the dielectric characteristics of polydimethylsiloxane‐based ERFs.…”