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Pulling and Pushing a Cargo With a Catalytically Active Carrier
- Publication Year :
- 2011
-
Abstract
- Catalytically active particles suspended in a liquid can move due to self-phoresis by generating solute gradients via chemical reactions of the solvent occurring at parts of their surface. Such particles can be used as carriers at the micro-scale. As a simple model for a carrier-cargo system we consider a catalytically active particle connected by a thin rigid rod to a catalytically inert cargo particle. We show that the velocity of the composite strongly depends on the relative orientation of the carrier-cargo link. Accordingly, there is an optimal configuration for the linkage. The subtlety of such carriers is underscored by the observation that a spherical particle completely covered by catalyst, which is motionless when isolated, acts as a carrier once attached to a cargo.<br />6 pages, 2 figures, to appear in EPL (https://www.epletters.net/)
- Subjects :
- Inert
Materials science
Active particles
Composite number
FOS: Physical sciences
General Physics and Astronomy
Condensed Matter - Soft Condensed Matter
Chemical reaction
Catalysis
Solvent
Biological Physics (physics.bio-ph)
Chemical physics
Soft Condensed Matter (cond-mat.soft)
Particle
carrier-cargo system
catalytically active particle
Rigid rod
Physics - Biological Physics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....7d9e5a8a29ebb42888031396b9373ae7