Effective viscosity of confined hydrocarbons

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Effective viscosity of confined hydrocarbons. / Sivebæk, Ion Marius; Samoilov, V.N.; Persson, B.N.J.

In: Physical Review Letters, Vol. 108, No. 3, 2012, p. 036102.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Sivebæk, Ion Marius; Samoilov, V.N.; Persson, B.N.J. / Effective viscosity of confined hydrocarbons.

In: Physical Review Letters, Vol. 108, No. 3, 2012, p. 036102.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{2881f757d3d345b7b581845e9305b9b6,
title = "Effective viscosity of confined hydrocarbons",
publisher = "American Physical Society",
author = "Sivebæk, {Ion Marius} and V.N. Samoilov and B.N.J. Persson",
year = "2012",
doi = "10.1103/PhysRevLett.108.036102",
volume = "108",
number = "3",
pages = "036102",
journal = "Physical Review Letters",
issn = "0031-9007",

}

RIS

TY - JOUR

T1 - Effective viscosity of confined hydrocarbons

A1 - Sivebæk,Ion Marius

A1 - Samoilov,V.N.

A1 - Persson,B.N.J.

AU - Sivebæk,Ion Marius

AU - Samoilov,V.N.

AU - Persson,B.N.J.

PB - American Physical Society

PY - 2012

Y1 - 2012

N2 - We present molecular dynamics friction calculations for confined hydrocarbon films with molecular lengths from 20 to 1400 carbon atoms. We find that the logarithm of the effective viscosity ηeff for nanometer-thin films depends linearly on the logarithm of the shear rate: log ηeff=C-nlog γ̇, where n varies from 1 (solidlike friction) at very low temperatures to 0 (Newtonian liquid) at very high temperatures, following an inverse sigmoidal curve. Only the shortest chain molecules melt, whereas the longer ones only show a softening in the studied temperature interval 0

AB - We present molecular dynamics friction calculations for confined hydrocarbon films with molecular lengths from 20 to 1400 carbon atoms. We find that the logarithm of the effective viscosity ηeff for nanometer-thin films depends linearly on the logarithm of the shear rate: log ηeff=C-nlog γ̇, where n varies from 1 (solidlike friction) at very low temperatures to 0 (Newtonian liquid) at very high temperatures, following an inverse sigmoidal curve. Only the shortest chain molecules melt, whereas the longer ones only show a softening in the studied temperature interval 0

UR - http://prl.aps.org/abstract/PRL/v108/i3/e036102

U2 - 10.1103/PhysRevLett.108.036102

DO - 10.1103/PhysRevLett.108.036102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

VL - 108

SP - 036102

ER -