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Related Experiment Video

Updated: Aug 7, 2025

Lower-Limb Biomechanical Characteristics Associated with Unplanned Gait Termination Under Different Walking Speeds
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Fast and slow walking driven by chemical fuel.

Vishnu Verman Rajasekaran1, Emad Elramadi1, Isa Valiyev1

  • 1Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, D-57068, Germany. schmittel@chemie.uni-siegen.de.

Chemical Communications (Cambridge, England)
|March 14, 2023
PubMed
Summary
This summary is machine-generated.

This study showcases a biped robot

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Area of Science:

  • Supramolecular chemistry
  • Nanotechnology
  • Robotics

Background:

  • Molecular machines and nanorobots offer potential for targeted drug delivery and nanoscale assembly.
  • Controlling the directional movement of artificial walkers is crucial for their practical applications.

Purpose of the Study:

  • To demonstrate controlled directional movement of a biped walker using chemical fuel.
  • To investigate the mechanisms of forward and backward motion at the molecular level.

Main Methods:

  • Utilizing a biped walker with dibenzyl amine feet.
  • Employing zinc porphyrin and dibenzo 24-crown-8 binding sites for locomotion.
  • Leveraging chemical fuel, cooperative binding, and kinetic selectivity for motion control.

Main Results:

  • Achieved fast forward and slow backward motion of the biped on a tetrahedral track.
  • Demonstrated motion driven by protonation-induced pseudorotaxane formation.
  • Showcased the role of cooperative binding and kinetic selectivity in directional movement.

Conclusions:

  • The study successfully demonstrates controllable directional locomotion of a molecular biped.
  • The findings provide insights into designing sophisticated molecular machines for future applications.
  • This work highlights the potential of supramolecular chemistry in creating functional nanoscale devices.