Fast Nonlinear Ion Transport via Field-induced Hydrodynamic Slip in Sub-20-nm Hydrophilic Nanofluidic Transistors

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Electrolyte transport through an array of 20 nm wide, 20 mu m long SiO2 nanofluldic transistors is described. At sufficiently low ionic strength, the Debye screening length exceeds the channel width, and ion transport is limited by the negatively charged channel surfaces. At source-drain biases >5 V, the current exhibits a sharp, nonlinear increase, with a 20-50-fold conductance enhancement. This behavior is attributed to a breakdown of the zero-slip condition. Implications for energy conversion devices are discussed.
Publisher
AMER CHEMICAL SOC
Issue Date
2009-04
Language
English
Article Type
Article
Keywords

CARBON NANOTUBES; ENERGY-CONVERSION; CHANNELS; FLOW; FABRICATION

Citation

NANO LETTERS, v.9, no.4, pp.1315 - 1319

ISSN
1530-6984
DOI
10.1021/nl802931r
URI
http://hdl.handle.net/10203/95288
Appears in Collection
EEW-Journal Papers(저널논문)
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