A simplified theory of "stickiness" due to electroadhesion between rough surfaces

TL;DR

This paper develops a simplified theoretical model for electroadhesion between rough surfaces, revealing that stickiness primarily depends on macroscopic parameters and introducing a new dimensionless stickiness parameter.

Contribution

It presents a new, simplified theory of electroadhesion based on existing models, emphasizing macroscopic quantities and introducing a novel dimensionless stickiness parameter.

Findings

Stickiness mainly depends on macroscopic quantities.

The theory applies to power law PSD surfaces.

A new dimensionless parameter for electroadhesive stickiness is proposed.

Abstract

Building on theories of Persson, we derive a simpler theory for electroadhesion between rough surfaces using BAM (Bearing Area Model) of Ciavarella, or previous ideas by Persson and Tosatti. Rather surprisingly, in terms of stickiness, we obtain very simple and similar results for pure power law power spectrum density (PSD), confirming stickiness to be mainly dependent on macroscopic quantities. We define a new dimensionless parameter for electroadhesive stickiness.