Weak-Flow Induced Dielectric Axes Rotation in Dipolar Suspensions

Pramodt Srinivasula

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arXiv · 2606.27296

Weak-Flow Induced Dielectric Axes Rotation in Dipolar Suspensions

Pramodt Srinivasula

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Abstract

Conventional rheodielectric studies of dipolar suspensions primarily examine flow-induced variations in the principal permittivity components. In contrast, an asymptotic solution of the perturbed Fokker--Planck equation for orientable Brownian dipoles under weak flow predicts the emergence of off-diagonal permittivity components that are linear in the relative flow strength. For planar shear flow, these terms exceed the corresponding higher-order diagonal corrections, leading to a rotation of the principal dielectric axes. This previously unrecognized rheodielectric response suggests new possibilities for flow-controlled dielectric and electro-optical functionalities.

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Pramodt Srinivasula. 2026-06-25. Weak-Flow Induced Dielectric Axes Rotation in Dipolar Suspensions. https://arxiv.org/abs/2606.27296

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