The Effect of Surface Roughness on Fluid Coupling Sealing Capability

The design for a reversible microfluidic coupler is proposed for use with microreactors and other MEMS devices. However, real couplers will include imperfections that must be considered to fully evaluate the degree of sealing. A method is presented for applying a normally distributed surface finish with a predetermined amplitude to a perfectly flat contact surface. The method is then applied to a microfluidic coupler seal to determine the load necessary to create complete sealing when the coupler has a non-ideal surface.
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