Generalized efficiency and its application to microscopic engines

Imre Derényi, Martin Bier, R. Dean Astumian

Research output: Contribution to journalArticle

140 Citations (Scopus)


We generalize the definition of the energy output of an engine as the minimum energy input required to accomplish the same task as the engine. Applying this new concept to molecular motors makes it possible to measure their efficiency even without attaching any external load to them. This way we can compare and characterize the operation of molecular motors in various situations. We also investigate how the thermally driven motors differ from other motors.

Original languageEnglish
Pages (from-to)903-906
Number of pages4
JournalPhysical review letters
Issue number5
Publication statusPublished - Jan 1 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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