Electrostatic Cancellation of Gravity Effects in Liquid Mixtures

TL;DR

This paper proposes using a spatially-varying electric field to counteract gravity in liquid mixtures, offering a practical laboratory method as an alternative to space or magnetic levitation experiments.

Contribution

It introduces a feasible electric field setup to cancel gravity effects in small liquid mixtures, providing a simple laboratory alternative to traditional methods.

Findings

Electric fields can effectively cancel gravity in liquid mixtures.

A wedge electrode geometry makes the setup practical and realizable.

The required voltages and sizes are manageable in typical lab environments.

Abstract

We point out that a spatially-varying electric field can be used to cancel the effect of gravity in liquid mixtures by coupling to the different components' permittivities. Cancellation occurs if the system under consideration is small enough. For a simple ``wedge'' electrode geometry we show that the required system size and voltage are practical, easily realizable in the Lab. Thus this setup might be a simple alternative to more expensive or hazardous options such as the space-shuttle, drop-tower, or magnetic levitation experiments.