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Folding and Characterization of a Bio-responsive Robot from DNA Origami
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Soft robotic origami crawler.

Qiji Ze1, Shuai Wu1, Jun Nishikawa2

  • 1Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA.

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|March 30, 2022
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Summary
This summary is machine-generated.

This study introduces a novel magnetic origami crawler for confined spaces. This untethered, small-scale robot uses origami principles for adaptable crawling and steering, with potential biomedical applications.

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Area of Science:

  • Robotics
  • Materials Science
  • Biomedical Engineering

Background:

  • Soft robotic crawlers are adaptable to various terrains.
  • In-plane contraction crawlers are effective in confined spaces but face miniaturization challenges.
  • Existing actuation methods and complex structures limit miniaturization of in-plane crawlers.

Purpose of the Study:

  • To develop a magnetically actuated, small-scale origami crawler with in-plane contraction.
  • To enable untethered locomotion and steering capabilities in confined environments.
  • To explore multifunctionality for biomedical applications.

Main Methods:

  • Utilized a four-unit Kresling origami assembly with two-level symmetry for contraction.
  • Employed magnetic actuation for torque distribution and control.
  • Investigated anisotropic and magnetically tunable structural stiffness for overcoming resistance.

Main Results:

  • Successfully demonstrated a small-scale, untethered origami crawler with crawling and steering abilities.
  • The crawler effectively overcomes significant resistance in severely confined spaces.
  • Internal cavity utilized for potential drug storage and release functionalities.

Conclusions:

  • The magnetic origami crawler offers a promising solution for navigating and operating in confined spaces.
  • Its design allows for adaptable locomotion and steering.
  • Potential for minimally invasive biomedical applications, including targeted drug delivery.