Microscopic Friction Emulators

TL;DR

This paper explores how cold ions in laser-created periodic potentials can model dry friction at the microscopic level, demonstrating that small ion systems can reveal complex frictional behaviors.

Contribution

It introduces a minimal ion-based experimental setup to study microscopic friction phenomena, expanding the understanding of frictional forces at small scales.

Findings

Small ion systems can effectively simulate dry friction.

Experiments with up to six ions reveal diverse frictional behaviors.

Laser-patterned potentials enable controlled friction studies.

Abstract

Cold ions sliding across periodic potential patterns formed by lasers elucidate the physics of dry friction between crystals. Experiments with no more than six ions suffice to explore a vast domain of frictional forces.