TY  - JOUR
AU  - Tan, Zihan
AU  - Yang, Mingcheng
AU  - Ripoll, Marisol
TI  - Anisotropic thermophoresis
JO  - Soft matter
VL  - 13
IS  - 40
SN  - 1744-6848
CY  - London
PB  - Royal Soc. of Chemistry
M1  - FZJ-2017-08446
SP  - 7283 - 7291
PY  - 2017
AB  - Colloidal migration in a temperature gradient is referred to as thermophoresis. In contrast to particles with a spherical shape, we show that elongated colloids may have a thermophoretic response that varies with the colloid orientation. Remarkably, this can translate into a non-vanishing thermophoretic force in the direction perpendicular to the temperature gradient. Opposite to the friction force, the thermophoretic force of a rod oriented with the temperature gradient can be larger or smaller than when oriented perpendicular to it. The precise anisotropic thermophoretic behavior clearly depends on the colloidal rod aspect ratio, and also on its surface details, which provides an interesting tunability to the devices constructed based on this principle. By means of mesoscale hydrodynamic simulations, we characterize this effect for different types of rod-like colloids.
LB  - PUB:(DE-HGF)16
C6  - pmid:28948262
UR  - <Go to ISI:>//WOS:000413199900006
DO  - DOI:10.1039/C7SM01436H
UR  - https://juser.fz-juelich.de/record/841371
ER  -