Dielectric electrorheological fluids: Theory and experiment
نویسندگان
چکیده
منابع مشابه
Structure of polydisperse electrorheological fluids: Experiment and theory
Macroscopic properties of electrorheological (ER) fluids are often determined by the spatial arrangement of the suspended particles. We investigate the microstructure of polydisperse ER fluids at low concentrations in a DC electric field. Optical microscopy reveals that the particles with polydispersity in size or in both size and dielectric property are mixed in stable single particle width ch...
متن کاملDynamic dielectric response of electrorheological fluids in drag flow.
We have determined the response time of dilute electrorheological fluids (ER) in drag flow from the dynamic dielectric response. On the basis of a kinetic rate equation a new formula was derived to approximate the experimental time-dependent dielectric permittivity during the temporal evolution of the microstructure. The dielectric response time was compared to the standard rheological response...
متن کاملDielectric Properties of Electrorheological Fluids Containing Zeolite Particles
Relationships between electrorheological (ER) effects and dielectric properties of suspensions are investigated from measurements of ER and dielectric properties of suspensions containing particles of type A zeolite such as 3A, 4A and 5A. In each suspension containing zeolite 3A or 4A particles, the ER effect is recognized, I.e., an increase in the apparent viscosity is observed when an electri...
متن کاملStructure of electrorheological fluids
Specially synthesized silica colloidal spheres with fluorescent cores were used as model electrorheological fluids to experimentally explore structure formation and evolution under conditions of no shear. Using Confocal Scanning Laser Microscopy we measured the location of each colloid in three dimensions. We observed an equilibrium body-centered tetragonal phase and several non-equilibrium str...
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ژورنال
عنوان ژورنال: Advances in Physics
سال: 2003
ISSN: 0001-8732,1460-6976
DOI: 10.1080/0001873021000059987