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Updated: May 26, 2026
06:56
Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
Published on: May 23, 2017
Nanoscale buckling deformation in layered copolymer materials
Ali Makke1, Michel Perez, Olivier Lame
1Universite de Lyon, University Lyon I, Laboratoire de Physique de la Matière Condensée et Nanostructures, Unité Mixte de Recherche 5586, Centre National de la Recherche Scientifique, 5586-F69622 Villeurbanne, France.
Summary
Nanoscale buckling in layered materials occurs due to elastic contrast between hard and soft layers. Instability wavelength is determined by kinetic effects, not defects, influenced by strain and growth rates.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Layered materials commonly deform via buckling under tensile stress perpendicular to layers.
- This instability arises from elastic contrast between constituent layers, observed across various scales.
Purpose of the Study:
- To investigate nanoscale buckling in triblock copolymer materials.
- To elucidate the factors governing the wavelength of buckling-induced undulations.
Main Methods:
- Utilized molecular simulations to model deformation in layered triblock copolymers.
- Analyzed the relationship between strain rate and buckling wavelength.
Main Results:
- Observed nanoscale buckling in response to tensile deformation.
- Demonstrated that buckling wavelength is dependent on strain rate.
- Showed that microstructure defects do not determine the undulation wavelength.
Conclusions:
- Nanoscale buckling in layered materials is driven by kinetic effects, specifically the interplay between strain rate and instability growth rate.
- The observed wavelength is a dynamic property, not a static microstructural feature.
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