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Microfluidics and micromanipulation: multi-scale applicationsof surface tension (BELSPO PAI Micro-MAST) [Microfluidics and micromanipulation: multi-scale applications of surface tension (BELSPO IAP Micro-MAST)]

The scientific objectives of this IAP network are driven by fundamental questions raised in microfluidics, interfacial science, and micromanipulation. The rational use of surface tension, surface stress and capillary effects in micromanipulation will be applied to a selected number of highly relevant case studies by the network partners, including capillary gripping, capillary filling, capillary alignment, capillary sealing, capillary self-assembly and droplet manipulation (incl. generation and transport). These fundamental questions can be grouped into three categories:1. Fluid statics and dynamics: How much force is applied on solids by menisci and micro-flows in a given geometry? What happens if the solid bends when subject to these forces? Are the interfaces stable and what if not? What is the effect of an electric field? How can the microscopic description of wetting be translated into an adequate boundary condition at the macroscopic level (e.g. contact angle and hysteresis)?2. Surface engineering: How does a contact line move on a rough surface? Can one pattern the surface microscopically to control this motion? How is the motion affected by evaporation, or by the presence of colloid particles in the liquid or at the interface? Do these particles interact with the micro-patterns on the surface? Can one create highly 3D patterns on the surface by using capillary forces (e.g. to bundle nanotubes)?3. Liquid engineering: How to measure the interfacial properties of complex liquids where apart from surface tension a surface viscoelastic response is present? How to infer macroscopic properties from the dynamics at the molecular scale? And how to engineer liquids and tailor them to the requirements arising from applications? Can one make a liquid that is biocompatible, and has a large surface tension and a low viscosity?The proposed multidisciplinary program (involving ULB, ULg, KULeuven, UMons and ESPCI ' Paris) combines forefront research in physics, material science, chemistry and engineering. Its main originality relies in the efforts to enhance the collaboration of the interfacial science, microfluidics and microengineering communities. [The scientific objectives of this IAP network are driven by fundamental questions raised in microfluidics, interfacial science, and micromanipulation. The rational use of surface tension, surface stress and capillary effects in micromanipulation will be applied to a selected number of highly relevant case studies by the network partners, including capillary gripping, capillary filling, capillary alignment, capillary sealing, capillary self-assembly and droplet manipulation (incl. generation and transport). These fundamental questions can be grouped into three categories:1. Fluid statics and dynamics: How much force is applied on solids by menisci and micro-flows in a given geometry? What happens if the solid bends when subject to these forces? Are the interfaces stable and what if not? What is the effect of an electric field? How can the microscopic description of wetting be translated into an adequate boundary condition at the macroscopic level (e.g. contact angle and hysteresis)?2. Surface engineering: How does a contact line move on a rough surface? Can one pattern the surface microscopically to control this motion? How is the motion affected by evaporation, or by the presence of colloid particles in the liquid or at the interface? Do these particles interact with the micro-patterns on the surface? Can one create highly 3D patterns on the surface by using capillary forces (e.g. to bundle nanotubes)?3. Liquid engineering: How to measure the interfacial properties of complex liquids where apart from surface tension a surface viscoelastic response is present? How to infer macroscopic properties from the dynamics at the molecular scale? And how to engineer liquids and tailor them to the requirements arising from applications? Can one make a liquid that is biocompatible, and has a large surface tension and a low viscosity?The proposed multidisciplinary program (involving ULB, ULg, KULeuven, UMons and ESPCI ' Paris) combines forefront research in physics, material science, chemistry and engineering. Its main originality relies in the efforts to enhance the collaboration of the interfacial science, microfluidics and microengineering communities.]



responsables


Pierre COLINET Benoit SCHEID


équipe


Sam DEHAECK Imre HORVATH David MIKAELIAN Alexey REDNIKOV Alessia SIMONINI Benjamin SOBAC Loannis TSOUMPAS


disciplines et mots clés déclarés


Mécanique appliquée générale Mécanique des fluides Physico-chimie générale

elasto-capillarité electro-capillarité fluides complexes lévitation acoustique microfluidique micromanipulation mouillage tension superficielle