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Related Experiment Video

Updated: May 13, 2026

Construction of Modular Hydrogel Sheets for Micropatterned Macro-scaled 3D Cellular Architecture
10:55

Construction of Modular Hydrogel Sheets for Micropatterned Macro-scaled 3D Cellular Architecture

Published on: January 11, 2016

Multiple shape transformations of composite hydrogel sheets.

Héloïse Thérien-Aubin1, Zi Liang Wu, Zhihong Nie

  • 1Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6.

Journal of the American Chemical Society
|March 8, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel method for creating hydrogel sheets that can change shape multiple times in response to different environmental stimuli. This breakthrough offers new possibilities for advanced materials in tissue engineering and robotics.

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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

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Last Updated: May 13, 2026

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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomaterials

Background:

  • Soft materials that change shape with environmental stimuli have applications in tissue engineering, robotics, and biosensing.
  • Typically, these materials have two stable shapes, corresponding to 'on' and 'off' states of a trigger.
  • Achieving multiple, distinct shape transformations from a single material remains a challenge.

Purpose of the Study:

  • To develop a versatile approach for inducing multiple, stimulus-specific shape transformations in hydrogel sheets.
  • To demonstrate a method for creating complex shape changes using integrated polymer components.

Main Methods:

  • Integration of multiple polymer components with distinct compositions into a planar hydrogel sheet.
  • Utilizing differential swelling or shrinkage of these components in response to specific external stimuli.
  • Analyzing the induced internal stresses that drive shape transformation.

Main Results:

  • Successfully demonstrated multiple, distinct shape transformations of a hydrogel sheet.
  • Each shape change was reliably triggered by a specific, well-defined external stimulus.
  • The approach allows for precise control over the material's shape based on environmental cues.

Conclusions:

  • The reported approach offers a simple yet versatile method for creating multi-responsive soft materials.
  • This technique enables precise control over shape transformations, expanding applications in advanced fields.
  • The integration of distinct polymer components provides a pathway to complex material behaviors.