Igor M Kulić et al 2005 J. Phys.: Condens. Matter 17 S3965 doi:10.1088/0953-8984/17/47/022
A DNA ring acting as a thermal ratchet
Igor M Kulić1, Rochish Thaokar2 and Helmut Schiessel3
Show affiliationsSeveral DNA nanomotors have been recently constructed in laboratories worldwide. These machines are, however, relatively slow and do not perform continuous rotations. We have recently proposed a rotary DNA nanomachine that shows a continuous rotation with a frequency of 102–104 Hz. This motor is a closed DNA ring whose elastic features are tuned such that it can be externally driven via e.g. periodic temperature changes. As a result, the twirling ring propels itself through the fluid with a speed of tens of nanometres up to a few microns per second. The current paper gives a more detailed presentation of this motor and provides a derivation of the low- and high-frequency asymptotic behaviour of thermal ratchets in general.
- PACS
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87.80.-y Biophysical techniques (research methods)
87.15.La Mechanical properties
87.85.Qr Nanotechnologies-design
87.15.H- Dynamics of biomolecules
87.15.Cc Folding: thermodynamics, statistical mechanics, models, and pathways
- Subjects
- Dates
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Issue 47 (30 November 2005)
Received 5 September 2005
Published 4 November 2005
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A DNA ring acting as a thermal ratchet
Igor M Kulić et al 2005 J. Phys.: Condens. Matter 17 S3965
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D R Matravers and J Triginer 2001 Class. Quantum Grav. 18 3917
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