TY - JOUR
T1 - Enhancing Rotational Diffusion Using Oscillatory Shear
AU - Leahy, Brian D.
AU - Cheng, Xiang
AU - Ong, Desmond C.
AU - Liddell-Watson, Chekesha
AU - Cohen, Itai
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: We thank D. Koch, Y. Lin, and T. Beatus for useful discussions, and M. Solomon for useful discussions on particle synthesis and featuring. This Letter is based on work supported in part by Award No. KUS-C1-018-02 made by King Abdullah University of Science and Technology (KAUST), the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. ER46517 (X. C., D. C. O., and C. L.-W.) and DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship 32 CFR 168a (B. D. L.).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2013/5/29
Y1 - 2013/5/29
N2 - Taylor dispersion - shear-induced enhancement of translational diffusion - is an important phenomenon with applications ranging from pharmacology to geology. Through experiments and simulations, we show that rotational diffusion is also enhanced for anisotropic particles in oscillatory shear. This enhancement arises from variations in the particle's rotation (Jeffery orbit) and depends on the strain amplitude, rate, and particle aspect ratio in a manner that is distinct from the translational diffusion. This separate tunability of translational and rotational diffusion opens the door to new techniques for controlling positions and orientations of suspended anisotropic colloids. © 2013 American Physical Society.
AB - Taylor dispersion - shear-induced enhancement of translational diffusion - is an important phenomenon with applications ranging from pharmacology to geology. Through experiments and simulations, we show that rotational diffusion is also enhanced for anisotropic particles in oscillatory shear. This enhancement arises from variations in the particle's rotation (Jeffery orbit) and depends on the strain amplitude, rate, and particle aspect ratio in a manner that is distinct from the translational diffusion. This separate tunability of translational and rotational diffusion opens the door to new techniques for controlling positions and orientations of suspended anisotropic colloids. © 2013 American Physical Society.
UR - http://hdl.handle.net/10754/598194
UR - https://link.aps.org/doi/10.1103/PhysRevLett.110.228301
UR - http://www.scopus.com/inward/record.url?scp=84878378002&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.228301
DO - 10.1103/PhysRevLett.110.228301
M3 - Article
C2 - 23767752
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 22
ER -