A Micro-PIV System is designed to measure velocity fields of particle seeded flows with micron scale spatial resolution using PIV techniques. The light source is a double pulsed Nd:YAG laser that is focused by an epifluorescent microscope with a high numerical aperture on a microfluidic device. The microflow is seeded with fluorescent particles. A microscope lens collects the particle signal that has a longer wavelength than the illuminating light. This signal is separated from the laser light by a filter cube and is recorded by a double-frame CCD camera. The double frame images are evaluated with conventional PIV algorithms.
High-speed Stereo µPIV measurement of flow induced by a moving 100 µm plankton recorded at 1 khz frame rate

LaVision offers a wide range of lasers, microscopes and different light source couplings for micro PIV applications.
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