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- Title
Highlighting Thermo-Elastic Effects in Confined Fluids.
- Authors
Kume, Eni; Baroni, Patrick; Noirez, Laurence
- Abstract
The recent identification of a finite shear elasticity in mesoscopic fluids has motivated the search of other solid-like properties of liquids. We present an innovative thermal approach of liquids. We identify a dynamic thermo-elastic mesoscopic behavior by building the thermal image produced by different liquids upon applying a low frequency mechanical shear field. We selected three fluids: a low molecular weight polybutylacrylate (PBuA), polypropyleneglycol (PPG), and glycerol. We demonstrate that a part of the energy of the shear strain is converted in cold and hot shear bands varying synchronously with the applied shear field. This thermodynamic change suggests a coupling to shear elastic modes in agreement with the low frequency shear elasticity theoretically foreseen and experimentally demonstrated.
- Subjects
FLUIDS; THERMOGRAPHY; MOLECULAR weights; ELASTICITY; STRAIN energy; SHEAR strain
- Publication
Polymers (20734360), 2021, Vol 13, Issue 14, p2378
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13142378