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Microfluidics Module

Microfluidics Module
ELECTROWETTING: A simulation of a variable-focus liquid lens for a miniature camera during the transition between focal lengths. The lens is made from the interface between two fluids – the lower phase velocity field is colored, the upper phase is shown by an arrow plot. The electrowetting effect is used to change the contact angle at the edge of the cylinder, creating a different meniscus radius and so modifying the focal length of the lens.

The Microfluidics Module brings easy-to-use tools for the study microfluidic devices and rarefied gas flows. Important applications include simulations of lab-on-a-chip devices, digital microfluidics, electrokinetic and magnetokinetic devices, inkjets, and vacuum systems.

In addition to enhanced interfaces for single phase flow, Microfluidics Module users will have dedicated interfaces for two-phase flow using the level set, phase field, and moving mesh methods. Each of these interfaces includes surface tension forces, capillary forces, and Marangoni effects.

COMSOL’s general purpose multiphysics features makes it easy to set up coupled electrokinetic and magnetodynamic simulations including electrophoresis, magnetophoresis, dielectrophoresis, electroosmosis, and electrowetting. The chemical diffusion and reactions for dilute species interfaces included in the Module enable the simulation of processes occurring in lab-on-chip devices. For simulating rarefied gas flows, you can use the specialized boundary conditions that activate flow simulation in the slip flow regime.

A new free molecular flow interface using the fast angular coefficient method allows for simulations where the molecular mean free path is much longer than the geometric dimensions. Combined with COMSOL’s LiveLink interfaces for industry-standard CAD packages, this tool is invaluable for vacuum system design, allowing quick parametric studies of chamber geometries and pump configurations.


Application Area

  • Capillary forces
  • Chemical and biochemical sensors
  • Dielectrophoresis (DEP)
  • DNA chips and lab-on-chips
  • Electrocoalescence
  • Electrokinetic flow
  • Electroosmosis
  • Electrophoresis
  • Electrowetting
  • Fluid-structure interaction (FSI)*
  • Inkjets
  • Magnetophoresis
  • Marangoni effects
  • Microreactors, micropumps, and micromixers
  • Molecular flow
  • Porous media flow
  • Rarefied gas flow
  • Static mixers
  • Surface tension effects
  • Two-phase flow
  • Vacuum systems




iMath Asia
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