Micron-Resolution Velocimetry Techniques
نویسندگان
چکیده
This paper examines various techniques that have been developed to measure flow fields in microfluidic devices with 10 – 10 micron-scale spatial resolution. These techniques include Scalar Image Velocimetry (SIV), Laser Doppler Velocimetry (LDV), and Particle Image Velocimetry (PIV). Advantages and disadvantages of these techniques are presented. PIV results are presented for a liquid flow through a nominally 30 μm high × 300 μm wide microchannel. These velocity measurements have spatial resolutions of 5.0 μm × 1.3 μm × 2.8 μm. Using 50% overlap, the velocity vector spacing is 680 nm in the spanwise direction of the microchannel.
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