Conference Proceedings

The effect of surface character on flows in microchannels

LE Rodd, ST Huntington, K Lyytikainen, DV Boger, JJ Cooper-White, DV Nicolau (ed.), UR Muller (ed.), JM Dell (ed.)

BIOMEMS AND NANOTECHNOLOGY | SPIE-INT SOC OPTICAL ENGINEERING | Published : 2003

Abstract

A technique for quantifying velocity profiles of fluids flowing in circular microchannels is presented. The primary purpose of this technique is to provide a robust method for quantifying the effect of surface character on the bulk fluid behaviour. A laser-scanning confocal microscope has been used to obtain fluorescent particle images from a 1 micron thick plane along the centreline of hydrophobic and hydrophilic glass capillaries. The velocities of fluorescent particles being carried in pressure-driven laminar flow of a Newtonian fluid have been evaluated at the centreplane of 57.5 micron capillaries using a variation of particle tracking velocimetry (PTV). This work aims to clarify incons..

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University of Melbourne Researchers