2010
DOI: 10.1002/elps.201000438
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Characterization of particle capture in a sawtooth patterned insulating electrokinetic microfluidic device

Abstract: Here we present a scheme to separate particles according to their characteristic physical properties, including size, charge, polarizability, deformability, surface charge mobility, dielectric features, and local capacitance. Separation is accomplished using a microdevice based on direct current insulator gradient dielectrophoresis that can isolate and concentrate multiple analytes simultaneously at different positions. The device is dependent upon dielectrophoretic and electrokinetic forces incorporating a gl… Show more

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Cited by 39 publications
(50 citation statements)
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“…This arc structure has been observed in many experimental systems and is demonstrated computationally (Figures 5A, 5B, 5C, & 5D). 1, 3, 811,42, 45, 49, 50 The net result is consistent with current experimental systems, where small collections of analytes are observed close to the point of greatest constriction of wide gates and full arcs form when complete trapping across the lateral dimension occurs. For a single particle population, some particles will trap on these wide gates, while other will continue on, which distributes that single population throughout the device.…”
Section: Resultssupporting
confidence: 87%
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“…This arc structure has been observed in many experimental systems and is demonstrated computationally (Figures 5A, 5B, 5C, & 5D). 1, 3, 811,42, 45, 49, 50 The net result is consistent with current experimental systems, where small collections of analytes are observed close to the point of greatest constriction of wide gates and full arcs form when complete trapping across the lateral dimension occurs. For a single particle population, some particles will trap on these wide gates, while other will continue on, which distributes that single population throughout the device.…”
Section: Resultssupporting
confidence: 87%
“…The triangular insulator is representative of diamonds, sawteeth, and triangles used for insulators. 11, 23, 28, 31, 42, 43, 45 Along the centerline, the value for the gradient of the trueE2 is for the 34.10 μm gate is approximated to be 3.2×10 16 V 2 /m 3 , which is the highest value of any of the insulator shapes examined. Particles will travel along the field line by EK forces in the absence of a significant gradient.…”
Section: Resultsmentioning
confidence: 99%
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