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Related Concept Videos

Magnetic Force01:18

Magnetic Force

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In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
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Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
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Magnetic Force Between Two Parallel Currents01:13

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Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
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Kirigami Makes a Soft Magnetic Sheet Crawl.

Pierre Duhr1, Yuki A Meier1, Alireza Damanpack2

  • 1Complex Materials, Department of Materials, ETH Zurich, Zurich, CH-8092, Switzerland.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 25, 2023
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Summary
This summary is machine-generated.

Soft robots with kirigami cuts crawl effectively using rotating magnetic fields. This novel magnetic kirigami approach enables untethered robots with programmable bidirectional locomotion and complex path planning.

Keywords:
crawlingkirigamilocomotionmagnetic soft compositessoft robotics

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Area of Science:

  • Soft robotics
  • Kirigami mechanics
  • Magnetic actuation

Background:

  • Untethered soft robots require effective locomotion strategies.
  • Achieving controlled movement in limbless robots is challenging.

Purpose of the Study:

  • To develop a novel soft robot capable of untethered crawling using kirigami and magnetic fields.
  • To investigate bidirectional locomotion and programmable motion in magnetic kirigami robots.

Main Methods:

  • Introducing kirigami cuts into a soft magnetic sheet.
  • Applying rotating magnetic fields for actuation.
  • Experimental characterization and multiphysics numerical simulations.

Main Results:

  • Demonstrated effective crawling of untethered soft robots.
  • Achieved bidirectional locomotion with distinct patterns and speeds.
  • Showcased steering and complex path programming capabilities.

Conclusions:

  • Magnetic kirigami provides a simple yet effective method for untethered soft robot locomotion.
  • Programmable motion and steering are achievable by modifying kirigami design and magnetic field control.