Piecewise uniform conduction-like flow channels and method...

Details Piecewise uniform conduction-like flow channels and method... Piecewise uniform conduction-like flow channels and method...

2006-02-28

2006-02-28

Snay, Jeffrey R. (Department: 1743)

Chemistry: analytical and immunological testing

Including sample preparation

Volumetric liquid transfer

C422S105000

Reexamination Certificate

active

07005301

ABSTRACT:
A low-dispersion methodology for designing microfabricated conduction channels for on-chip electrokinetic-based systems is presented. The technique relies on trigonometric relations that apply for ideal electrokinetic flows, allowing faceted channels to be designed on chips using common drafting software and a hand calculator. Flows are rotated and stretched along the abrupt interface between adjacent regions with differing permeability. Regions bounded by interfaces form flow “prisms” that can be combined with other designed prisms to obtain a wide range of turning angles and expansion ratios while minimizing dispersion. Designs are demonstrated using two-dimensional numerical solutions of the Laplace equation.

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