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Related Experiment Video

Updated: Sep 1, 2025

Four-Dimensional Printing of Stimuli-Responsive Hydrogel-Based Soft Robots
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Three-Dimensional Printing in Stimuli-Responsive Yield-Stress Fluid with an Interactive Dual Microstructure.

Weijian Hua1, Kellen Mitchell1, Lasith S Kariyawasam2

  • 1Department of Mechanical Engineering, University of Nevada Reno, Reno, Nevada 89557, United States.

ACS Applied Materials & Interfaces
|August 16, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces stimuli-responsive yield-stress fluids for advanced 3D printing. These novel support bath materials enable on-demand addition and removal, expanding fabrication possibilities for complex structures.

Keywords:
interactive dual microstructuremicrostructure evolutionstimuli-responsive polymersupport bath-enabled 3D printingyield-stress fluid

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Area of Science:

  • Materials Science
  • Rheology
  • Additive Manufacturing

Background:

  • Yield-stress fluids are crucial for 3D printing support baths.
  • Current fluids have limitations in microstructure and material handling during printing.

Purpose of the Study:

  • To propose stimuli-responsive yield-stress fluids with dual microstructures for advanced 3D printing.
  • To enable on-demand addition/removal of support materials and control rheological properties.

Main Methods:

  • Development of stimuli-responsive yield-stress fluids using nanoclay-Pluronic F127 nanocomposite.
  • Characterization of material properties, microstructure evolution, and rheological behavior.
  • Investigation of filament formation, surface roughness, and thermal effects.

Main Results:

  • Demonstrated switchable states and regulable rheological properties of the fluids.
  • Successfully printed complex 3D structures including Hall of Prayer, capsule, and tube.
  • Validated the feasibility of perfusing and removing support materials during printing.

Conclusions:

  • Stimuli-responsive yield-stress fluids offer enhanced control and versatility in 3D printing.
  • The dual microstructure concept facilitates embedded printing and efficient material removal.
  • This technology enables the fabrication of arbitrary and complex architectures.