Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.048002
Keywords
-
Categories
Funding
- NWO [740.018.013]
- EU-FET Project within Horizon 2020 [766972]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [758383]
Ask authors/readers for more resources
Catalytic colloidal swimmers that propel due to self-generated fluid flows exhibit strong affinity for surfaces. Here, we report experimental measurements of a significant dependence of such microswimmers' speed on the nearby substrate material. We find that speeds scale with the solution contact angle 8 on the substrate, which relates to the associated hydrodynamic substrate slip length, as V proportional to (cos theta +1)(-3/2). We show that such dependence can be attributed to osmotic coupling between swimmers and substrate. Our work points out that hydrodynamic slip at nearby walls, though often unconsidered, can significantly impact microswimmer self-propulsion.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available