HEИндивидуална стипендия2023–2025

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

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-05-01 → 2025-04-30
Финансиране от ЕС: 191 760 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Ефектите на паметта при материали като стъкло или смачкана хартия показват, че реакцията на системата зависи от миналите ѝ състояния. Използването на специални вискоеластични структури помага да се разберат фундаменталните физични процеси, които стоят зад тези явления.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

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

Disordered systems such as granular materials, glass melts or crumpled paper, exhibit many stunning behaviours. One of the hallmark of such complex system is "memory effects", behaviours in which the response of the system does not depend solely on the current excitation, but also on the past ones. In particular, many of such disordered systems feature complex relaxation processes, which result in time-dependent memory effects. Yet, due to the high disorder of memory forming systems, accessing the fundamental processes behind these phenomenon has remained elusive. The main objective of this project is a new class of model systems, based on mechanical instabilities of viscoelastic structures, with emergent time-dependent memory effects. The experimental access provided by this system offers a new mean to deeply study the relation between the physics of the system and the macroscopic emerging memory.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

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 theirglobal 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.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITE LIBRE DE BRUXELLES · Bruxelles / BrusselКоординаторБелгия