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Proceedings Paper

Ratchets: muscles, molecules, and quantum heat pumps
Author(s): Heiner Linke; Tammy E. Humphrey
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Paper Abstract

Ratchets are systems that combine asymmetry with non-equilibrium processes to generate directed particle flow. A brief general introduction to ratchets is given, and the relevance of the ratchet model for biological motor proteins is highlighted. While biological motor proteins operate classically, ratchet systems that employ quantum effects are of interest from a fundamental point of view. A recent experimental realization of a tunnelling ratchet for electrons is reviewed. Such electron tunnelling ratchets can not only be used to generate particle currents, but also to pump heat. Using a realistic model, the heat pumping properties of the experimental electron ratchet are analysed.

Paper Details

Date Published: 19 November 2001
PDF: 10 pages
Proc. SPIE 4590, BioMEMS and Smart Nanostructures, (19 November 2001); doi: 10.1117/12.454613
Show Author Affiliations
Heiner Linke, Univ. of Oregon (United States)
Tammy E. Humphrey, Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 4590:
BioMEMS and Smart Nanostructures
Laszlo B. Kish; Erol C. Harvey; William B. Spillman Jr., Editor(s)

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