S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Fast Nonlinear Ion Transport via Field-induced Hydrodynamic Slip in Sub-20-nm Hydrophilic Nanofluidic Transistors
- Issue Date
- American Chemical Society
- Nano Letters, Vol.9 No.4, pp.1315-1319
- 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.
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