µPIV
This technique is used to quantify flows in milli- and micro-fluidic structures. The flow is seeded with micron-sized particles and illuminated with a pulsed laser source. Light scattered by the seed particles is used to follow the displacement of the particles between light pulses. Use of a stereoscopic approach permits all three particle velocity components to be measured in a cross-section of the flow, providing a velocity map for the flow in the measurement plane. In milli- and micro-fluidic applications the technique uses volume illumination with the numerical aperture of the microscope objective defining the measurement plane.
Capability
- Milli and micro-fluidic flow characterisation
- Verification and optimisation of particle manipulation techniques such as magnetic or acoustic methods
Equipment
- Dantec micro particle image velocimetry system
Example
Vector map created following µPIV analysis of a microfluidic device.