Capillary Torque on a Particle Rotating at an Interface
Abhinav Naga, Doris Vollmer, Hans‐Jürgen Butt
Abstract
are the receding and advancing contact angles, respectively. The expression for the capillary torque (normalized by the radius of the particle) is equivalent to the expression for the friction force that a drop experiences when moving on a flat surface. Our theory predicts that capillary torque reduces the mobility of wet granular matter and prevents small (nano/micro) particles from rotating when they are in Brownian motion at an interface.
Topics & Concepts
Capillary actionTorqueSurface tensionMechanicsCapillary numberDrop (telecommunication)Particle (ecology)Contact angleRADIUSCapillary surfaceRotation (mathematics)ChemistryClassical mechanicsMaterials sciencePhysicsComposite materialThermodynamicsGeometryMechanical engineeringMathematicsComputer securityEngineeringOceanographyGeologyComputer sciencePickering emulsions and particle stabilizationMaterial Dynamics and PropertiesMicrofluidic and Bio-sensing Technologies