Thermophoretically Driven Carbon Nanotube Oscillators

TL;DR

This study explores how thermal gradients can drive and control double-walled carbon nanotube oscillators, demonstrating the potential for thermophoresis to initiate and tune nanoscale oscillatory behavior through simulations.

Contribution

It introduces a novel approach using thermophoresis to initiate and control nanotube oscillators, supported by numerical and molecular dynamics analyses.

Findings

Thermophoresis can effectively initiate nanotube oscillations.

Heat pulses can tune the oscillatory behavior.

Both regular and chaotic motions observed.

Abstract

The behavior of a nanodevice based upon double-walled carbon nanotube oscillators driven by periodically applied thermal gradients (7 and 17 K/nm) is investigated by numerical calculations and classical molecular dynamics simulations. Our results indicate that thermophoresis can be effective to initiate the oscillator and that suitable heat pulses may provide an appropriate way to tune its behavior. Sustained regular oscillatory as well as chaotic motions were observed for the systems investigated in this work.