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Updated: Apr 19, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Published on: January 26, 2016

Internal dynamics and activated processes in soft-glassy materials.

R Benzi¹, M Sbragaglia, A Scagliarini

¹Department of Physics and INFN, University of "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy. sbragaglia@roma2.infn.it.

|January 7, 2015

Summary

This summary is machine-generated.

Plastic rearrangements in soft-glassy materials are driven by energy input. Simulations show these events are activated processes, exhibiting stochastic resonance under oscillating strain, confirming mechanical activation.

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Area of Science:

Soft-condensed matter physics
Rheology of complex fluids

Background:

Plastic rearrangements are fundamental to the behavior of soft-glassy materials like emulsions and foams.
Understanding these rearrangements is key to characterizing material properties and dynamics.

Purpose of the Study:

To investigate the dynamics of plastic rearrangements in soft-glassy systems at hydrodynamic scales.
To analyze the role of energy input and internal dynamics on rearrangement processes.

Main Methods:

Numerical simulations of soft-glassy systems at hydrodynamic scales.
Modeling coarsening dynamics and its impact on interfacial area reduction.
Applying periodically oscillating strains to study energy supply effects.

Main Results:

The hydrodynamic model accurately reproduces coarsening dynamics.
Plastic rearrangements are characterized as activated processes influenced by "noise" (internal non-equilibrium dynamics).
Stochastic resonance is observed when internal and external timescales interact.

Conclusions:

Plastic rearrangements in soft-glassy materials can be mechanically activated.
The interplay of coarsening and external forcing leads to phenomena like stochastic resonance.
These findings provide a deeper understanding of the dynamics in soft-glassy materials.