Brownian motion of gas-fluidized ellipsoid particles.
Y. Park, L. Daniels, T. Lubensky, and D. Durian. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)
Abstract
We studied the Brownian motion of ellipsoidal particles placed on a fine
sieve in an upward flow of gas and investigated the effect of
dissipative coupling of translational to rotational motion. By using
digital video microscopy, we quantified the positions and orientations
of individual particles. We found that angular correlations decay
approximately exponentially in time and that single-particle velocity
correlations decay approximately algebraically in time with different
exponents for directions perpendicular and parallel to the particles
long axes. We interpret our measurements using a Langevin theory with
frequency-dependent (colored) noise sources in which the dependence of
the anisotropic friction tensor on angle is responsible for coupling
between orientation and displacement.
%0 Book Section
%1 statphys23_0297
%A Park, Y.
%A Daniels, L.
%A Lubensky, T.C.
%A Durian, D.J.
%B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics
%C Genova, Italy
%D 2007
%E Pietronero, Luciano
%E Loreto, Vittorio
%E Zapperi, Stefano
%K brownian coupling ellipsoid equation gas-fluidized langevin motion particles rotational statphys23 to topic-3 translational
%T Brownian motion of gas-fluidized ellipsoid particles.
%U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=297
%X We studied the Brownian motion of ellipsoidal particles placed on a fine
sieve in an upward flow of gas and investigated the effect of
dissipative coupling of translational to rotational motion. By using
digital video microscopy, we quantified the positions and orientations
of individual particles. We found that angular correlations decay
approximately exponentially in time and that single-particle velocity
correlations decay approximately algebraically in time with different
exponents for directions perpendicular and parallel to the particles
long axes. We interpret our measurements using a Langevin theory with
frequency-dependent (colored) noise sources in which the dependence of
the anisotropic friction tensor on angle is responsible for coupling
between orientation and displacement.
@incollection{statphys23_0297,
abstract = {We studied the Brownian motion of ellipsoidal particles placed on a fine
sieve in an upward flow of gas and investigated the effect of
dissipative coupling of translational to rotational motion. By using
digital video microscopy, we quantified the positions and orientations
of individual particles. We found that angular correlations decay
approximately exponentially in time and that single-particle velocity
correlations decay approximately algebraically in time with different
exponents for directions perpendicular and parallel to the particles
long axes. We interpret our measurements using a Langevin theory with
frequency-dependent (colored) noise sources in which the dependence of
the anisotropic friction tensor on angle is responsible for coupling
between orientation and displacement.},
added-at = {2007-06-20T10:16:09.000+0200},
address = {Genova, Italy},
author = {Park, Y. and Daniels, L. and Lubensky, T.C. and Durian, D.J.},
biburl = {https://www.bibsonomy.org/bibtex/278f5a314dfffaeb20121f8a06c98a0da/statphys23},
booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics},
editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano},
interhash = {7ca31ebdb9e58e5f3ae3491a38a114f7},
intrahash = {78f5a314dfffaeb20121f8a06c98a0da},
keywords = {brownian coupling ellipsoid equation gas-fluidized langevin motion particles rotational statphys23 to topic-3 translational},
month = {9-13 July},
timestamp = {2007-06-20T10:16:16.000+0200},
title = {Brownian motion of gas-fluidized ellipsoid particles.},
url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=297},
year = 2007
}