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Title (deu)
Driven and self-driven transport in model active systems
Speaker / Lecturer
Demian Levis
U of Barcelona
Description (deu)

Soft matter systems can only generate sustained currents when driven out-of-equilibrium. One can distinguish two classes of problems: systems globally driven by an external forcing, or locally driven by injecting energy at the single particle level (usually called 'active'). To study transport phenomena in these two situations, I will focus on simple particle model systems, composed of spinning particles, driven by a rotating external field, and isotropic self-propelled particles, powered by an internal energy depot. We will show how the interplay between particle interactions and the driving forces gives rise to collective transport at large scales. If time allows, I will also discuss the hybrid situation when both local and global driving is at play: the shear rheology of dense systems of self-propelled particles, from the liquid to the glassy regime. I will show the key role that activity plays in the flow properties of dense materials by discussing the yield stress surface in the activity-density-shear parameter space.

Keywords (deu)
Transport PropertiesSoft Matter Systems
Subject (eng)
ÖFOS 2012 -- 103 -- Physics, Astronomy
Type (eng)
Language
[eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2063406
Date created
2024-04-05
Place of creation (eng)
ESI
Duration
35 minutes 41 seconds
Content
Details
Object type
Video
Format
video/mp4
Created
18.04.2024 03:24:31
Metadata