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Related Experiment Videos

Pattern transformation triggered by deformation.

T Mullin1, S Deschanel, K Bertoldi

  • 1Manchester Centre for Nonlinear Dynamics, University of Manchester, Oxford Road, Manchester, UK. tom.mullin@manchester.ac.uk

Physical Review Letters
|October 13, 2007
PubMed
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Periodic elastomeric cellular solids exhibit pattern transformations under compression due to reversible elastic instability. This mechanism offers potential for nanoscale imprinting and controlled switching of photonic and phononic crystals.

Area of Science:

  • Materials Science
  • Mechanics of Materials
  • Soft Matter Physics

Background:

  • Periodic cellular solids offer tunable mechanical and physical properties.
  • Understanding deformation mechanisms in elastomers is crucial for advanced material design.

Purpose of the Study:

  • To investigate the structural transformations in periodic elastomeric cellular solids under uniaxial compression.
  • To identify the underlying mechanism driving these pattern transformations.

Main Methods:

  • Numerical simulations were employed to model the behavior of the cellular solids.
  • Experimental validation was performed to confirm the simulation results.

Main Results:

  • A critical applied load triggers novel, reversible pattern transformations.

Related Experiment Videos

  • The pattern switch is driven by a reversible elastic instability.
  • Numerical and experimental results showed excellent quantitative agreement, with uniform transformations across samples.

    • Conclusions:

    • The observed elastic instability provides a mechanism for controlled structural transformation in elastomeric cellular solids.
    • This mechanism is scalable to smaller dimensions, enabling nanoscale pattern imprinting.
    • Potential applications include controlled switching of photonic and phononic crystals.