Dynamic-Field-Induced Oscillatory dc Current in Colloidal Crystallite

Abstract

The one-dimensional variable range hopping conductivity model − was applied to a very simple model system, monodispersed hard spheres suspended in an insulating oil, to understand dynamic-field-induced dc current oscillation phenomenon that was experimentally observed in the electrorheological fluid, , a typical colloid crystallite arrayed with an external electric field. The relationship between the oscillatory dc current and the applied mechanical field is established, agreeing well with previous experimental results. Our finding suggests that this kind of colloidal crystal can be potentially used as a convenient electronic device to mutually transfer electronic and mechanical signals or to real-time analyze mechanical signals, which would be useful in mechanical measurement, such as in seismographs.

Electrorheological Fluids

“…[47,156] This phenomenon was theoretically addressed [157] on the basis of the fibrillated chains' structure framework and the quasi-one-dimensional variable range hopping conductive model. An ER sensor for real-time monitoring of the mechanical field based on this phenomenon was thus proposed.…”

Electrorheological Fluids

“…[47,156] This phenomenon was theoretically addressed [157] on the basis of the fibrillated chains' structure framework and the quasi-one-dimensional variable range hopping conductive model. [47,156] This phenomenon was theoretically addressed [157] on the basis of the fibrillated chains' structure framework and the quasi-one-dimensional variable range hopping conductive model.…”