# Resonantly induced friction in driven nanomechanical systems

## TL;DR

This paper introduces a novel resonant friction mechanism in nanomechanical systems, which can cause negative friction and lead to self-sustained oscillations, expanding understanding of energy dissipation at the nanoscale.

## Contribution

It proposes a new symmetry-based friction mechanism specific to resonantly driven nanomechanical systems, including a microscopic model and analysis of negative friction effects.

## Key findings

- Friction force follows from symmetry considerations.
- Resonant friction can be negative, causing instabilities.
- Self-sustained oscillations can emerge due to negative friction.

## Abstract

We propose a new mechanism of friction in resonantly driven vibrational systems. The form of the friction force follows from the time- and spatial-symmetry arguments. We consider a microscopic mechanism of this resonant force in nanomechanical systems. The friction can be negative, leading to an instability of forced vibrations of a nanoresonator and the onset of self-sustained oscillations in the rotating frame.