TY  - JOUR
AU  - Wysocki, Adam
AU  - Elgeti, Jens
AU  - Gompper, Gerhard
TI  - Giant adsorption of microswimmers: Duality of shape asymmetry and wall curvature
JO  - Physical review / E
VL  - 91
IS  - 5
SN  - 1539-3755
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2015-03715
SP  - 050302
PY  - 2015
AB  - The effect of shape asymmetry of microswimmers on their adsorption capacity at confining channel walls is studied by a simple dumbbell model. For a shape polarity of a forward-swimming cone, like the stroke-averaged shape of a sperm, extremely long wall retention times are found, caused by a nonvanishing component of the propulsion force pointing steadily into the wall, which grows exponentially with the self-propulsion velocity and the shape asymmetry. A direct duality relation between shape asymmetry and wall curvature is proposed and verified. Our results are relevant for the design microswimmer with controlled wall-adhesion properties. In addition, we confirm that pressure in active systems is strongly sensitive to the details of the particle-wall interactions.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000355173300001
DO  - DOI:10.1103/PhysRevE.91.050302
UR  - https://juser.fz-juelich.de/record/201420
ER  -