This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility:


peer-reviewed publication

trusted source


A tiny new climbing robot inspired by geckos and inchworms

Tiny new climbing robot was inspired by geckos and inchworms
Tiny new robot, dubbed the GeiwBot. Credit: University of Waterloo

A tiny robot that could one day help doctors perform surgery was inspired by the incredible gripping ability of geckos and the efficient locomotion of inchworms.

The new , developed by engineers at the University of Waterloo, utilizes ultraviolet (UV) light and magnetic force to move on any surface, even up walls and across ceilings. A paper on the work has been published in the journal Cell Reports Physical Science.

It is the first soft robot of its kind that doesn't require connection to an external power supply, enabling remote operation and versatility for potential applications such as assisting surgeons and searching otherwise inaccessible places.

"This work is the first time a holistic soft robot has climbed on inverted surfaces, advancing state-of-the-art soft robotics innovation," said Dr. Boxin Zhao, a professor of chemical engineering. "We are optimistic about its potential, with much more development, in several different fields."

Constructed from a smart material, the robot—dubbed the GeiwBot by researchers because of the creatures that inspired it—can be altered at the to mimic how geckos stick and unstick powerful grippers on their feet.

That enables the robot—about four centimeters long, three millimeters wide and one millimeter thick—to climb on a vertical wall and across the ceiling without being tethered to a .

Zhao and his research team constructed the robot using liquid crystal elastomers and synthetic adhesive pads. A light-responsive polymer strip simulates the arching and stretching motion of an inchworm, while gecko-inspired magnet pads at either end do the gripping.

"Even though there are still limitations to overcome, this development represents a for utilizing biomimicry and smart materials for soft robots," said Zhao, the University of Waterloo Endowed Chair in Nanotechnology. "Nature is a great source of inspiration and nanotechnology is an exciting way to apply its lessons."

An untethered soft robot paves the way for potential surgical applications via remote operation inside the and for sensing or searching in dangerous or hard-to-reach places during rescue operations.

The next step for researchers is to develop a solely light-driven climbing soft robot that doesn't require a and uses near-infrared radiation instead of UV light to improve biocompatibility.

More information: Jian Sun et al, Gecko-and-inchworm-inspired untethered soft robot for climbing on walls and ceilings, Cell Reports Physical Science (2023). DOI: 10.1016/j.xcrp.2022.101241

Journal information: Cell Reports Physical Science
Citation: A tiny new climbing robot inspired by geckos and inchworms (2023, February 27) retrieved 19 July 2024 from
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

Quadruped robot with magnetized feet can climb on metal buildings and structures (video)


Feedback to editors