Article (Scientific journals)
Brillouin light scattering during shearing of complex fluids
Lehr, Claudius Moritz; Astasheva, Olga; Baller, Jörg
2021In Optics Express, 29 (11), p. 16019-16031
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Keywords :
Brillouin scattering; Dynamic light scattering; Scattering measurement; Optical measurement; Light scattering; Inelastic scattering
Abstract :
[en] A setup for the optical measurement of elastic properties during the flow of complex fluids is presented. Brillouin light scattering and rotational rheology are combined in order to simultaneously measure the high-frequency longitudinal elastic modulus in a classical rheometer along with the zero-shear viscosity. Brillouin light scattering allows for the contactless determination of local elastic properties. First measurements of a diluted polymer system suggest a homogeneous orientation of polymer molecules throughout the sample as soon as a critical shear rate has been reached at one spatial position.
Disciplines :
Physics
Author, co-author :
Lehr, Claudius Moritz ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Astasheva, Olga ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Baller, Jörg;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
no
Language :
English
Title :
Brillouin light scattering during shearing of complex fluids
Publication date :
24 May 2021
Journal title :
Optics Express
ISSN :
1094-4087
Publisher :
OSA
Volume :
29
Issue :
11
Pages :
16019-16031
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 18 May 2021

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