Entropic torque

Roth, R.; van Roij, R.; Andrienko, D.; Mecke, K. R.; Dietrich, S.

doi:10.1103/PhysRevLett.89.088301

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Entropic torque

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Andrienko, D.
MPI for Polymer Research, Max Planck Society;

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Citation

Roth, R., van Roij, R., Andrienko, D., Mecke, K. R., & Dietrich, S. (2002). Entropic torque. Physical Review Letters, 89(8): 088301. doi:10.1103/PhysRevLett.89.088301.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-653F-5

Abstract

Quantitative predictions are presented of a depletion-induced torque and force acting on a single colloidal hard rod immersed in a solvent of hard spheres close to a planar hard wall. This torque and force, which are entirely of entropic origin, may play an important role for the key-lock principle, according to which a biological macromolecule (the key) is functional only in a particular orientation with respect to a cavity (the lock).