Generalized efficiency and its application to microscopic engines

被引：150

作者：

Derényi, I

Bier, M

Astumian, RD

机构：

[1] Univ Chicago, Dept Biochem & Mol Biol, Chicago, IL 60637 USA

[2] Univ Chicago, Dept Surg, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.83.903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

收藏

页码：903 / 906

页数：4

相关论文

共 17 条

[1] Fluctuation driven transport and models of molecular motors and pumps [J].

Astumian, RD ;

Derényi, I .

EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, 1998, 27 (05) :474-489

[2] Thermodynamics and kinetics of a Brownian motor [J].

Astumian, RD .

SCIENCE, 1997, 276 (5314) :917-922

[3] Biased Brownian motion as the operating principle for microscopic engines [J].

Bier, M ;

Astumian, RD .

BIOELECTROCHEMISTRY AND BIOENERGETICS, 1996, 39 (01) :67-75

[4] Efficiency of Brownian heat engines [J].

Derényi, I ;

Astumian, RD .

PHYSICAL REVIEW E, 1999, 59 (06) :R6219-R6222

[5] OPTICAL THERMAL RATCHET [J].

FAUCHEUX, LP ;

BOURDIEU, LS ;

KAPLAN, PD ;

LIBCHABER, AJ .

PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1504-1507

[6] SINGLE MYOSIN MOLECULE MECHANICS - PICONEWTON FORCES AND NANOMETER STEPS [J].

FINER, JT ;

SIMMONS, RM ;

SPUDICH, JA .

NATURE, 1994, 368 (6467) :113-119

[7] Rotation of a single molecule within a supramolecular bearing [J].

Gimzewski, JK ;

Joachim, C ;

Schlittler, RR ;

Langlais, V ;

Tang, H ;

Johannsen, I .

SCIENCE, 1998, 281 (5376) :531-533

[8]

Haenggi P., 1996, Nonlinear physics of complex systems. Current status and future trends, P294

[9] MUSCLE STRUCTURE AND THEORIES OF CONTRACTION [J].

HUXLEY, AF .

PROGRESS IN BIOPHYSICS & MOLECULAR BIOLOGY, 1957, 7 :255-&

[10] Modeling molecular motors [J].

Julicher, F ;

Ajdari, A ;

Prost, J .

REVIEWS OF MODERN PHYSICS, 1997, 69 (04) :1269-1281