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Related Experiment Video

Updated: May 12, 2026

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

Self-shaping composites with programmable bioinspired microstructures.

Randall M Erb1, Jonathan S Sander, Roman Grisch

  • 1Complex Materials, Department of Materials, ETH Zurich, Zurich 8093, Switzerland.

Nature Communications
|April 18, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a bioinspired method for creating programmable shape-changing composites. By controlling particle orientation with magnetic fields, these materials mimic natural shape-shifting for advanced applications.

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Last Updated: May 12, 2026

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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

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Area of Science:

  • Materials Science
  • Bioinspired Engineering
  • Composite Materials

Background:

  • Natural structures exhibit complex shape changes using oriented cellulose microfibrils to control swelling and shrinkage.
  • Synthetic shape-memory systems often rely on material-specific mechanisms, differing from natural approaches.

Purpose of the Study:

  • To develop a universal method for creating artificial composites that replicate natural shape-changing mechanisms.
  • To enable programmable shape changes within the material's microstructure.

Main Methods:

  • Utilizing a weak external magnetic field to remotely control the orientation of inorganic reinforcing particles within a composite.
  • Combining controlled particle orientation with swellable/shrinkable polymer matrices.

Main Results:

  • Demonstrated a robust and universal method for bioinspired shape-changing composites.
  • Achieved programmable shape changes, including unusual reversibility and twisting effects.
  • Enabled site-specific shape control by programming the material's microstructure.

Conclusions:

  • The proposed bioinspired approach offers a novel way to engineer advanced shape-changing materials.
  • This technique moves beyond externally imposed shape changes to intrinsic, microstructurally programmed transformations.
  • Potential applications span various fields requiring adaptable and responsive materials.