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Robotic Swarms Mimic Nature to Advance Collective Performance
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Robotic Swarms Mimic Nature to Advance Collective Performance
by Clarence Oxford
Los Angeles CA (SPX) Apr 05, 2024

Drawing inspiration from the collective behavior seen in natural phenomena such as beehives, ant colonies, and schools of fish, researchers at The University of Texas at Austin have developed "smart swarms" of minuscule robots. These tiny machines are designed to work together as a unified group, enhancing their ability to perform tasks through coordinated action, an advancement that far exceeds the capabilities of individual robots.

The concept, which mirrors the collaborative efforts seen in nature, where the collective intelligence of a group leads to greater strength and efficiency, has been the focus of the research team led by Yuebing Zheng, associate professor in the Walker Department of Mechanical Engineering and Texas Materials Institute. "Our aim was to decode the secrets behind nature's team work and replicate it," Zheng explained.

Zheng's group first introduced these microrobotic swarms in a study published in Advanced Materials. Their follow-up research, detailed in Science Advances, introduces an adaptive time delay feature. This innovation allows each microrobot to adjust its movement based on local environmental changes, thereby enhancing the swarm's responsiveness without sacrificing its robustness.

This breakthrough builds upon a novel optical feedback system that guides the microrobots' collective movement through controllable light patterns, a system initially revealed in their 2023 paper selected as an editor's choice by Advanced Materials. The adaptive time delay mechanism could revolutionize the efficiency of autonomous systems, from drone fleets to vehicular convoys, by allowing for seamless, decentralized operation akin to the natural world's coordinated movements.

Zhihan Chen, a doctoral candidate in Zheng's laboratory and co-author of the study, pointed out the challenges individual nanorobots face in complex environments, such as navigating bloodstreams or polluted waters. "The collective movement strategy significantly improves their ability to reach targets efficiently, overcoming obstacles and threats," Chen said.

The team's current focus is on testing the swarms in dynamic environments, moving from static liquid solutions to flowing liquids and eventually inside living organisms. The ultimate goal is for these smart swarms to revolutionize fields like drug delivery, where they could navigate the human body to deliver medication precisely, or environmental cleanup, where they could collectively detoxify water bodies.

Research Report:Persistent and responsive collective motion with adaptive time delay

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