Thermodynamics of a colloidal particle in a time-dependent nonharmonic potential

被引：263

作者：

Blickle, V

Speck, T

Helden, L

Seifert, U

Bechinger, C

机构：

[1] Univ Stuttgart, Phys Inst, D-70550 Stuttgart, Germany

[2] Univ Stuttgart, Inst Theoret Phys 2, D-70550 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.96.070603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the motion of an overdamped colloidal particle in a time-dependent nonharmonic potential. We demonstrate the first lawlike balance between applied work, exchanged heat, and internal energy on the level of a single trajectory. The observed distribution of applied work is distinctly non-Gaussian in good agreement with numerical calculations. Both the Jarzynski relation and a detailed fluctuation theorem are verified with good accuracy.

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页数：4

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