ArticleLangmuir : the ACS journal of surfaces and colloids2023
Unidirectional Droplet Propulsion onto Gradient Brushes without External Energy Supply.
Article in Langmuir : the ACS journal of surfaces and colloids, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Durotaxis and Antidurotaxis Droplet Motion onto Gradient Gel-Substrates.Langmuir : the ACS journal of surfaces and colloids · 2024Article
- Dynamics of Droplets Moving on Lubricated Polymer Brushes.Langmuir : the ACS journal of surfaces and colloids · 2024Article
- Surface-Initiated Polymerization with an Initiator Gradient: A Monte Carlo Simulation.Polymers · 2024Article
- Antidurotaxis Droplet Motion onto Gradient Brush Substrates.Langmuir : the ACS journal of surfaces and colloids · 2023Article
- Corrosion-driven droplet wetting on iron nanolayers.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Using extensive molecular dynamics simulation of a coarse-grained model, we demonstrate the possibility of sustained unidirectional motion (durotaxis) of droplets without external energy supply when placed on a polymer brush substrate with stiffness gradient in a certain direction. The governing key parameters for the specific substrate design studied, which determine the durotaxis efficiency, are found to be the grafting density of the brush and the droplet adhesion to the brush surface, whereas the strength of the stiffness gradient, the viscosity of the droplet, or the length of the polymer chains of the brush have only a minor effect on the process. It is shown that this durotaxial motion is driven by the steady increase of the interfacial energy between droplet and brush as the droplet moves from softer to stiffer parts of the substrate whereby the mean driving force gradually declines with decreasing roughness of the brush surface. We anticipate that our findings indicate further possibilities in the area of nanoscale motion without external energy supply.
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Registered trials
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