% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Sivebaek:201805, author = {Sivebaek, I. M. and Samoilov, V. N. and Persson, Bo}, title = {{E}ffective {V}iscosity of {C}onfined {H}ydrocarbons}, journal = {Physical review letters}, volume = {108}, number = {3}, issn = {1079-7114}, address = {College Park, Md.}, publisher = {APS}, reportid = {FZJ-2015-04099}, pages = {036102}, year = {2012}, abstract = {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: logηeff=C−nlogγ˙, 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<T<900 K. The results are important for the frictional properties of very thin (nanometer) films and to estimate their thermal durability.}, cin = {IAS-1 / PGI-1}, ddc = {550}, cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106}, pnm = {424 - Exploratory materials and phenomena (POF2-424)}, pid = {G:(DE-HGF)POF2-424}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000299329100019}, doi = {10.1103/PhysRevLett.108.036102}, url = {https://juser.fz-juelich.de/record/201805}, }