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231223s2007 xx ||||| 00| ||eng c |
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|a pubmed24n0583.xml
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|a (DE-627)NLM174985495
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|a (NLM)17999544
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Jin, Xiaozhong
|e verfasserin
|4 aut
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| 245 |
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|a Induced electrokinetic transport in micro-nanofluidic interconnect devices
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 28.01.2008
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|a Date Revised 11.12.2007
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Hybrid micro-nanofluidic interconnect devices can be used to control analyte transfer from one microchannel to the other through a nanochannel under rest, injection, and recovery stages of operation by varying the applied potential bias. Using numerical simulations based on coupled transient Poisson-Nernst-Planck and Stokes equations, we examine the electrokinetic transport in a gateable device consisting of two 100 microm long, 1 microm wide negatively charged microchannels connected by a 1 microm long, 10 nm wide positively charged nanochannel under both positive and negative bias potentials. During injection, accumulation of ions is observed at the micro-nano interface region with the positive potential and depletion of ions is observed at the other micro-nano junction region. Net space charge in the depletion region gives rise to nonlinear electrokinetic transport during the recovery stage due to induced pressure, induced electroosmotic flow of the second kind, and complex flow circulations. Ionic currents are computed as a function of time for both positive and negative bias potentials for the three stages. Analytical expressions derived for ion current variation are in agreement with the simulated results. In the presence of multiple accumulation or depletion regions, we show that a hybrid micro-nano device can be designed to function as a logic gate
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
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|a Joseph, Sony
|e verfasserin
|4 aut
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|a Gatimu, Enid N
|e verfasserin
|4 aut
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|a Bohn, Paul W
|e verfasserin
|4 aut
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| 700 |
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|a Aluru, N R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 23(2007), 26 vom: 18. Dez., Seite 13209-22
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:23
|g year:2007
|g number:26
|g day:18
|g month:12
|g pages:13209-22
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|d 23
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|e 26
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|h 13209-22
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