Fluidization and dynamic heterogeneity induced by molecular motor’s stimuli in soft matter

Victor Teboul; Stephane Chaussedent; Nathalie Gaumer

doi:10.1117/12.2635721

3 October 2022 Fluidization and dynamic heterogeneity induced by molecular motor’s stimuli in soft matter

Victor Teboul, Stephane Chaussedent, Nathalie Gaumer

Author Affiliations +

Proceedings Volume 12212, Molecular and Nano Machines V; 1221203 (2022) https://doi.org/10.1117/12.2635721
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Abstract

When embedded inside soft matter, molecular motors induce stimuli that can result in a modification of the physical characteristics of the embedding medium. In azobenzene containing materials for example, a fluidization of the medium has been reported by several groups upon activation of the photo-isomerizing molecule. We discuss here the relations between the fluidization induced by small stimuli in amorphous materials and the glass-transition long standing problem. We focus our attention on the most important characteristic of the glass-transition, the spontaneous appearance of cooperative motions called dynamic heterogeneity that are thought to control the dynamics of the medium. We discuss how motors stimuli create dynamic heterogeneity from a cage-breaking mechanism, the properties of these heterogeneities and their relations with the observed fluidization.

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Victor Teboul, Stephane Chaussedent, and Nathalie Gaumer "Fluidization and dynamic heterogeneity induced by molecular motor’s stimuli in soft matter", Proc. SPIE 12212, Molecular and Nano Machines V, 1221203 (3 October 2022); https://doi.org/10.1117/12.2635721

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