Micro-PIV/PTV

2D-/Stereo and Tomo-PIV

applied to microscopic systems

LaVision‘s FlowMaster Micro-PIV/PTV (µPIV/PTV) product range for velocimetry in microscopic dimensions evolved over nearly two decades and covers all needs of high-magnification flow diagnostics. All hard- and software components are optimized for the specific requirements of microflow measurements which are different from applications in larger scales in many aspects.

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Applications

Microfluidic components

Lab-on-a-chip devices

Fuel cells

Membrane modules

Micro heat exchanger

Neurobiology, cell biology, drug delivery and DNA amplification

Flow diagnostics of aneurysms

Heart valve design

Micro-Electro-Mechanical Systems (MEMS): micro heat-sinks, micropumps, microturbines, microengines and micromixers

Single core fiber system with couplers for light delivery

A typical Micro-PIV/PTV system consists of a sensitive scientific camera, a pulsed laser with appropriate beam coupling and guiding, an epifluorescence microscope (single channel or stereo) and our DaVis software for image acquisition, advanced analysis and intuitive visualization (with reporting and export functionality).
Making use of fluorescent seed particles is a consequence of the situation that no light sheet can be formed in such small scales and so the background and reflections from a volume illumination needs to be blocked. An epifluorescent filter cube assures that no laser light enters the viewing/imaging beampath. The measurement plane is defined by the narrow depth of focus of the microscope's objective which also has to allow for a comparably long working distance.

Fullyauto scan sequences-motorized zoom micro

System Features:
Application specific selection of microscope, light source and camera(s)
Micro-PIV algorithm for enhanced signal-to-noise flow field imaging
Fiber-guided laser light delivery for standard and high repetition rate lasers
Microscope operation under DaVis software control
Time-resolved (high-speed) Micro-PIV measurements

Upgrades:
Single-channel or stereo microscopes
Planar 2D2C or 2D3C (stereo) PIV
Volumetric tomographic PIV or 4D-PTV (Shake-the-Box)
Motorized focus and sample stage
Pressure from PIV
Fluorescent calibration plates
µPIV starter kit
Liquid mixing concentration or temperature fields using LIF

Flow field around a moving 100µm plankton recorded at 1 kHz frame rate

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