Title: Prediction and observation of sustained oscillations in a sheared liquid crystalline polymer
Authors: Grosso, M ×
Crescitelli, S
Somma, E
Vermant, Jan
Moldenaers, Paula
Maffettone, PL #
Issue Date: Mar-2003
Publisher: American physical soc
Series Title: Physical review letters vol:90 issue:9 page: 98304
Abstract: Experimental observations of sustained oscillations of both shear stress and first normal stress differences are reported in flowing liquid crystalline polymers in a limited range of shear rates. The results can be described by considering the response of a rigid-rod model. Depending on the initial conditions, the frequency spectrum of the stress signal contains either one or two characteristic frequencies. This can be explained by the occurrence of either pure "wagging" or the coexistence of wagging and "log-rolling" behavior of the director.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter, Rheology and Technology Section
× corresponding author
# (joint) last author

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