Casimir torque between nanostructured plates

TL;DR

This paper analyzes the Casimir torque between nanostructured plates using a scattering approach, highlighting the importance of mode coupling effects and proposing an experimental measurement setup.

Contribution

It introduces a detailed scattering-based calculation of Casimir torque that accounts for shape-induced mode coupling, surpassing previous approximation methods.

Findings

Mode coupling significantly affects Casimir torque.

Proposed experimental setup for measuring the torque.

Enhanced understanding of quantum vacuum effects in nanostructures.

Abstract

We investigate in detail the Casimir torque induced by quantum vacuum fluctuations between two nanostructured plates. Our calculations are based on the scattering approach and take into account the coupling between different modes induced by the shape of the surface which are neglected in any sort of proximity approximation or effective medium approach. We then present an experimental setup aiming at measuring this torque.