The end of nanochannels

Thomas B. Sisan; Seth Lichter

doi:10.1007/s10404-011-0855-9

The end of nanochannels

Thomas B. Sisan, Seth Lichter^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Current theories of nanochannel flow impose no upper bound on flow rates, and predict friction through nanochannels can be vanishingly small. We reassess neglecting channel entry effects in extremely long channels and find violations at the nanoscale. Even in frictionless nanochannels, end effects provide a finite amount of friction. Hence, the speed at which nanochannels transport liquids is limited. Flow-rate and slip-length measurements are reevaluated using calculations which include end-effect friction. End effects are critical for the design of new technological devices and to understand biological transport.

Original language	English (US)
Pages (from-to)	787-791
Number of pages	5
Journal	Microfluidics and Nanofluidics
Volume	11
Issue number	6
DOIs	https://doi.org/10.1007/s10404-011-0855-9
State	Published - Dec 2011

Keywords

Aquaporin
Nanoscale fluid flow
Nanotubes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry

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10.1007/s10404-011-0855-9

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N2 - Current theories of nanochannel flow impose no upper bound on flow rates, and predict friction through nanochannels can be vanishingly small. We reassess neglecting channel entry effects in extremely long channels and find violations at the nanoscale. Even in frictionless nanochannels, end effects provide a finite amount of friction. Hence, the speed at which nanochannels transport liquids is limited. Flow-rate and slip-length measurements are reevaluated using calculations which include end-effect friction. End effects are critical for the design of new technological devices and to understand biological transport.

AB - Current theories of nanochannel flow impose no upper bound on flow rates, and predict friction through nanochannels can be vanishingly small. We reassess neglecting channel entry effects in extremely long channels and find violations at the nanoscale. Even in frictionless nanochannels, end effects provide a finite amount of friction. Hence, the speed at which nanochannels transport liquids is limited. Flow-rate and slip-length measurements are reevaluated using calculations which include end-effect friction. End effects are critical for the design of new technological devices and to understand biological transport.

KW - Aquaporin

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KW - Nanotubes

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The end of nanochannels

Abstract

Keywords

ASJC Scopus subject areas

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