electrokin_lec2

electrokin_lec2 - Key Concepts for section...

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1: Debye layer, Zeta potential, Electrokinetics 2: Electrophoresis, Electroosmosis 3: Dielectrophoresis 4: Inter-Debye layer force, Van-Der Waals forces 5: Coupled systems, Scaling, Dimensionless Number Goals of Part IV: (1) Understand electrokinetic phenomena and apply them in (natural or artificial) biosystems (2) Understand various driving forces and be able to identify dominating forces in coupled systems Key Concepts for section IV (Electrokinetics and Forces)
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Helmholtz model (1853) Guoy-Chapman model (1910-1913) Stern model (1924) + - + + + + + + + + + + + - - - - - - - - - - - 1 κ 1 0 Φ x + - + + + + + + + + + + + - - - - - - - - - - - 1 1 x 0 Φ + + + + + + + - + + + + + + + + + + + - - - - - - - - - - - 1 + + + + + + 1 0 Φ x - - - slip boundary (zeta potential) ξ
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From NessCAP Inc. website Debye layer is a extraordinary capacitor! http://www.nesscap.com/ Image removed due to copyright restrictions. Graph of power vs. energy characteristics of energy storage devices.
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Image removed due to copyright restrictions. Datasheet for NESSCAP Ultracapacitor 3500F/2.3V
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Motion of DNA in Channels 35.7 V/cm - (cathode) + (anode) electroosmosis electrophoresis - - - - - - - - - - - - - - - - - - - - - - - - ++ + + + + + + + + + + + + + + (surface charges) E field Source: Prof. Han’s Ph.D thesis
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-60 -40 -20 0 20 40 0 0.25 0.5 0.75 1 Buffer concentration(M) Velocity ( μ m/sec) T7 T2 0.5X TBE 10X TBE Velocity of DNA in obstacle-free channel DNA electrophoresis in a channel
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electrokin_lec2 - Key Concepts for section...

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