1. Entropic force on granular chains self-extracting from one-dimensional confinement.
- Author
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Jeng, Pei-Ren, KuanHua Chen, Hwang, Gwo-jen, Cho, Ethan Y., Chenhsin Lien, Kiwing To, and Chou, Y. C.
- Subjects
PHYSICS research ,CHAIN scission ,ENTROPY ,STATISTICAL physics ,THERMODYNAMICS - Abstract
The entropic forces on the self-retracting granular chains, which are confined in channels with different widths, are determined. The time dependence of the length of chain remaining in the channel L
in (t) is measured. The entropic force is treated as the only parameter in fitting the solution of the nonlinear equation of motion of Lin (t) to the experimental data. The dependence of the entropic force on the width of the confining channel can be expressed as a power-law with an exponent of 1.3, which is consistent with the previous theoretical predictions for the entropy loss due to confinement. [ABSTRACT FROM AUTHOR]- Published
- 2014
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