Europhys. Lett.
Volume 72, Number 4, November 2005
Page(s) 527 - 533
Section General
Published online 12 October 2005
Europhys. Lett., 72 (4), pp. 527-533 (2005)
DOI: 10.1209/epl/i2005-10273-1

Twirling DNA rings -Swimming nanomotors ready for a kickstart

I. M. Kulic1, 2, R. Thaokar1, 3 and H. Schiessel1, 4

1  Max-Planck-Institute for Polymer Research, Theory Group P.O. Box 3148, D 55021 Mainz, Germany
2  Department of Physics and Astronomy, University of Pennsylvania Philadelphia, PA 19104, USA
3  Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
4  Instituut-Lorentz, Universiteit Leiden - Postbus 9506 2300 RA Leiden, The Netherlands

received 21 March 2005; accepted in final form 20 September 2005
published online 12 October 2005

We propose a rotary DNA nanomachine that shows a continuous rotation with a frequency of around 100$\un{Hz}$. This motor consists of a DNA ring whose elastic features are tuned such that it can be externally driven via a periodic temperature change. As a result, the ring propels itself through the fluid with a speed up to tens of nanometers per second.

05.40.-a - Fluctuation phenomena, random processes, noise, and Brownian motion.
47.15.Gf - Low-Reynolds-number (creeping) flows.
87.15.He - Dynamics and conformational changes.

© EDP Sciences 2005