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Related Experiment Video

Updated: May 7, 2026

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
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Rapid and extensive collapse from electrically responsive macroporous hydrogels.

Stephen Kennedy1, Sidi Bencherif, Daniel Norton

  • 1School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA; Wyss Institute for Biologically Inspired Engineering, Cambridge, MA, 02138, USA.

Advanced Healthcare Materials
|September 14, 2013
PubMed
Summary
This summary is machine-generated.

Electrically responsive hydrogels with macropores rapidly collapse under electric fields. Optimized electrogels enable tunable optical displays and coordinated drug delivery systems.

Keywords:
drug deliveryelectroactivityhydrogelsstimuli responsivenesstissue engineering

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomedical Engineering

Background:

  • Hydrogels are water-swollen polymer networks with diverse applications.
  • Electrically responsive hydrogels offer tunable properties but often suffer from slow response times.
  • Macroporous structures can enhance transport properties and mechanical response in hydrogels.

Purpose of the Study:

  • To develop electrically responsive hydrogels with enhanced volumetric collapse.
  • To investigate the integration of these hydrogels into functional arrays for optical modulation.
  • To explore the potential for coordinated drug delivery using these electrogel systems.

Main Methods:

  • Fabrication of macroporous hydrogels with interconnected pore networks.
  • Characterization of hydrogel response to varying electric field strengths.
  • Integration of electrogels into modular arrays for optical demonstrations.
  • Loading and in vitro release studies of multiple model drugs.

Main Results:

  • Macroporous electrogels exhibited rapid volumetric collapse under moderate electric fields.
  • Optimized electrogel arrays demonstrated tunable configurational and chromatic optical modulations.
  • Coordinated release profiles of multiple drugs were achieved by modulating electric fields.

Conclusions:

  • Interconnected macropores significantly accelerate the volumetric collapse of electrically responsive hydrogels.
  • These advanced electrogels are suitable for creating dynamic optical displays and sophisticated drug delivery platforms.
  • The developed materials offer a promising route towards smart, responsive systems in various technological fields.