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Multitemperature Responsive Self-Folding Soft Biomimetic Structures.

Kunihiko Kobayashi1,2, Seung Hyun Oh1, ChangKyu Yoon3

  • 1Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA.

Macromolecular Rapid Communications
|December 19, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed novel temperature-responsive polymer gels (POEGMA) for creating millimeter-scale, stimuli-responsive structures. These smart materials enable sequential shape changes in soft robotics and biomimetic applications.

Keywords:
poly[oligo (ethylene glycol) methyl ether methacrylate]shape changesoft actuatorssoft roboticsstimuli-responsive materials

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Soft Robotics

Background:

  • Stimuli-responsive shape-changing structures are crucial for autonomous devices and soft robotics.
  • Temperature is an ideal trigger for actuating soft structures in physiological or ambient conditions.
  • Previous work demonstrated thermally responsive self-folding structures for applications like tissue engineering and minimally invasive surgery.

Purpose of the Study:

  • To develop novel thermally responsive bilayer structures for advanced soft robotics.
  • To tune the swelling properties of poly[oligo (ethylene glycol) methyl ether methacrylate] (POEGMA) gels at specific temperatures.
  • To create sequential, multistate shape-changing soft biomimetic structures.

Main Methods:

  • Synthesized POEGMA gels with varying side chain lengths and copolymerization extents to tune thermal responsiveness.
  • Characterized the swelling properties of the POEGMA gels.
  • Utilized a multilayer photopatterning process to fabricate complex soft structures.

Main Results:

  • Successfully tuned the lower critical solution temperature and volume transition temperature of POEGMA gels.
  • Created millimeter-scale, stimuli-responsive structures capable of sequential shape changes.
  • Demonstrated multistate behaviors in the fabricated soft biomimetic structures.

Conclusions:

  • POEGMA gels offer tunable thermal responsiveness for designing sophisticated soft structures.
  • The developed photopatterning technique enables the creation of complex, sequential shape-changing devices.
  • These advancements hold promise for next-generation soft robotics and biomimetic applications.