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Self-Induced Buckling in Hollow Microgels.

Leah Rank^1,2, Emanuela Zaccarelli^1,2

¹CNR Institute of Complex Systems, Uos Sapienza, Piazzale Aldo Moro 2, 00185 Roma, Italy.

|January 15, 2026

Summary

This summary is machine-generated.

Concentrated hollow microgels spontaneously buckle due to particle crowding, not external stress. This self-induced buckling in elastic polymer shells offers insights into natural systems and materials design.

Keywords:

buckling instability microgels monomer-resolved simulations shape phase diagram soft colloids

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Area of Science:

Soft Matter Physics
Polymer Science
Materials Science

Background:

Hollow microgels are experimental elastic polymer shells.
Previous studies observed buckling in dilute microgels under osmotic pressure.

Purpose of the Study:

Investigate spontaneous buckling in concentrated hollow microgels.
Understand the role of interparticle crowding in microgel deformation.
Develop a phase diagram for microgel buckling phenomena.

Main Methods:

Large-scale molecular dynamics simulations.
Analysis of local curvature metrics.
Construction of a phase diagram based on reduced volume.

Main Results:

Concentrated hollow microgels exhibit spontaneous symmetry-breaking deformations.
Buckling is driven by interparticle crowding, not external stress.
A phase diagram quantifies buckling phenomena as a function of reduced volume.

Conclusions:

Interparticle crowding induces buckling in hollow microgels at high concentrations.
Findings provide a framework for understanding deformations in elastic shells.
Offers potential applications in materials design and insights into biological systems.