Introduction to viscoelasticity and plasticity, and their relation to the underlying microscopic dynamics in soft matter systems

Autor(en)

Roberto Cerbino, Veronique Trappe

Abstrakt

Understanding the rheological behavior of complex fluids, and in particular its relation to the dynamics of the elementary microscopic constituents, is one of the open challenges in soft matter science. In this contribution, we give a brief introduction to linear shear rheology and passive microrheology of soft amorphous materials, and we then focus on the transition to non-linearity during oscillatory rheology tests performed on soft glassy materials. These materials exhibit solid-like properties at rest, but they display characteristics of fluids when a sufficiently large shear is applied. Significant progress in understanding such ‘fluidization’ has been recently achieved by combining rheometry with techniques capable to capture the microscopic dynamics induced by shear, and in particular by oscillatory shear. We here summarize some of these achievements, as an introduction to the field for a non-expert reader.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Université de Fribourg

Journal

Physica A: Statistical Mechanics and its Applications

Band

631

Anzahl der Seiten

13

ISSN

0378-4371

DOI

https://doi.org/10.1016/j.physa.2023.128653

Publikationsdatum

03-2023

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie, 103029 Statistische Physik

Schlagwörter

ASJC Scopus Sachgebiete

Statistical and Nonlinear Physics, Statistics and Probability

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9e21bfb0-3877-40f5-b3e7-cbac3e8b004c