Effects of viscosity on liquid structures produced by in-air microfluidics
David Baumgärtner, Günter Brenn, Carole Planchette
Abstract
In-flight collisions between a regular stream of droplets and a continuous liquid jet enable the production of controlled structures, which may be hardened for various applications such as liquid encapsulation. Experiments show that both the drop and jet viscosities have a major, yet very different influence on the geometry of the created structures and their evolution. Models based on the hydrodynamics of the drop and jet support these observations and provide a first guide on how each viscosity can be used to better shape the structures produced by in-air microfluidics.
Topics & Concepts
Drop (telecommunication)ViscosityRecoilSilicone oilMechanicsMaterials scienceWeber numberJet (fluid)ThermodynamicsChemistryComposite materialPhysicsReynolds numberAtomic physicsTurbulenceTelecommunicationsComputer scienceFluid Dynamics and Heat TransferSurface Modification and SuperhydrophobicityInnovative Microfluidic and Catalytic Techniques Innovation