Page 121 - Optofluidics Fundamentals, Devices, and Applications

∝ (ε p − ε m ) 2 (λ>>a)
∝ζ≠ f(a) ∗ (thin EDL)
Separation velocity
a (λ<a)
V op
a 5 ,
∝
∝
V op
V ep
V op
Scattering force dependence on particle size and refractive index,
Differences in species charge to drag ratio represented by
∝ E. ∝ 1/a * (thick EDL) V ep a 2 ∝ V dep Lorenz force dependence on particle size and polarizability, ∝ (ε p − ε m ) V dep Differences in density. Driving force is gravitational or centrifugal ∝ (ρ p − ρ m )a 2 ≈ a V cent ∝ g. Size dependence on permeability through pac
Operating principle ∝ I. V op electrophoretic mobility, V ep ∝ ∇(E 2 ). V dep acceleration field, V cent ∝ ΔP Typically, V SEC Comparison of Bioanalytical Separation Techniques

Technique Optical Electrophoresis Dielectrophoresis Centrifugation Size exclusion chromatography TABLE 5-1

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