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@ARTICLE{Lorenz:141858,
author = {Lorenz, B and Krick, B A and Mulakaluri, N. and Smolyakova,
M. and Dieluweit, S and Sawyer, W G and Persson, Bo},
title = {{A}dhesion: role of bulk viscoelasticity and surface
roughness},
journal = {Journal of physics / Condensed matter},
volume = {25},
number = {22},
issn = {1361-648X},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2014-00196},
pages = {225004},
year = {2013},
abstract = {We study the adhesion between smooth polydimethylsiloxane
(PDMS) rubber balls and smooth and rough poly(methyl
methacrylate) (PMMA) surfaces, and between smooth silicon
nitride balls and smooth PDMS surfaces. From the measured
viscoelastic modulus of the PDMS rubber we calculate the
viscoelastic contribution to the crack-opening propagation
energy γeff(v,T) for a wide range of crack tip velocities v
and for several temperatures T. The
Johnson–Kendall–Roberts (JKR) contact mechanics theory
is used to analyze the ball pull-off force data, and
γeff(v,T) is obtained for smooth and rough surfaces. We
conclude that γeff(v,T) has contributions of similar
magnitude from both the bulk viscoelastic energy dissipation
close to the crack tip, and from the bond-breaking process
at the crack tip. The pull-off force on the rough surfaces
is strongly reduced compared to that of the flat surface,
which we attribute mainly to the decrease in the area of
contact on the rough surfaces.},
cin = {PGI-1 / IAS-1 / ICS-7},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
I:(DE-Juel1)ICS-7-20110106},
pnm = {424 - Exploratory materials and phenomena (POF2-424)},
pid = {G:(DE-HGF)POF2-424},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000319262200005},
doi = {10.1088/0953-8984/25/22/225004},
url = {https://juser.fz-juelich.de/record/141858},
}