Phys. Rev. Lett. 61, 1442–1445 (1988)Brownian Motion in a Rotating Fluid: Diffusivity is a Function of the Rotation RateReceived 3 November 1987; published in the issue dated 26 September 1988 The phenomenological relations between thermodynamic fluxes and forces are normally assumed to be invariant with respect to arbitrary motion of the frame of reference. We describe a breakdown of this invariance strong enough to be observable. It is shown that the diffusivity in a rotating fluid is anisotropic and also smaller in magnitude than in a fluid at rest in an inertial frame, giving rise to a diffusion analog of the Hall effect. For large Brownian particles (e.g., biological macromolecules) the diffusivity may decrease by 50% at the rotation speeds achievable in ultracentrifuges. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.61.1442
DOI:
10.1103/PhysRevLett.61.1442
PACS:
05.40.+j, 66.10.Cb
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.