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Exploring time-dependent memory effects in matter with viscoelastic snap-through of strips.

Obiettivo

Memory is crucial in living organisms and computers, but is also a hallmark of complex materials such as crumpled paper, glasses or sheared foams. Memory manifests itself in a stunning variety, and is central both in fundamental research and for applications (ageing, adaptive matter, programmable matter). A new picture based on novel theoretical concepts, related to the pathways of transitions between metastable states recently appeared, and lead to a flurry of activity. But so far, this work focused mostly on quasistatic memory effects, where the duration of the input does not matter. Yet, time-dependent memory effects are encountered in many complex systems, and their microscopic origin is often unclear. I therefore propose to study time-dependent memory and pathways in a model mechanical system, explicitly tailored to exhibit time-dependent memory, while allowing direct observations and manipulations. Specifically, I will use viscoelastic thin strips that can toggle via a snap-through instability between two states as a basic building block to create systems with emergent time-dependent memory. This project provides the key to experimentally probe and reveal the mechanisms of time-dependent memory in matter, as well as to design and create systems with complex programmable pathways. I divide my project in three work packages:
WP1. First, I will study the snapping of viscoelastic strips, that will constitute the basic elements of this model system.
WP2. Next, I will assemble several of these strips to monitor the emergence of time-dependent memory effects and study both their
global aspects and pathways of transitions.
WP3.Finally I will aim to control time-dependent memory and design complex systems with predefined pathways.
Leveraging the versatility and experimental accessibility of model mechanical In this project, I propose to use instabilities in viscoelastic strips to explore, understand and control the emergence of time dependent memory effects in matter.

Campo scientifico (EuroSciVoc)

Parole chiave

Programma(i)

Argomento(i)

Meccanismo di finanziamento

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Invito a presentare proposte

(si apre in una nuova finestra) HORIZON-MSCA-2022-PF-01

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Coordinatore

UNIVERSITE LIBRE DE BRUXELLES
Contributo netto dell'UE
€ 191 760,00
Indirizzo
AVENUE FRANKLIN ROOSEVELT 50
1050 BRUXELLES
Belgio
Regione
Région de Bruxelles-Capitale/Brussels Hoofdstedelijk Gewest Région de Bruxelles-Capitale/ Brussels Hoofdstedelijk Gewest Arr. de Bruxelles-Capitale/Arr. Brussel-Hoofdstad
Tipo di attività
Higher or Secondary Education Establishments
Collegamenti
Costo totale
Nessun dato