TY - JOUR
T1 - Brownian motion in a rotating fluid
T2 - Diffusivity is a function of the rotation rate
AU - Ryskin, Gregory
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1988
Y1 - 1988
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0039322841&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0039322841&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.61.1442
DO - 10.1103/PhysRevLett.61.1442
M3 - Article
C2 - 10038799
AN - SCOPUS:0039322841
SN - 0031-9007
VL - 61
SP - 1442
EP - 1445
JO - Physical review letters
JF - Physical review letters
IS - 13
ER -