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Programmable Soft Robot Material Changes Stiffness on Demand For Diverse Tasks

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Discovery

Curated by Surfaced Editorial·Technology·2 min read
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Scientists at MIT have developed a programmable material for soft robotics that can rapidly switch between rigid and compliant states. This composite, utilizing low-melting-point alloys embedded within a rubber matrix, can increase its stiffness by a factor of 100 in milliseconds. The team demonstrated this by applying an electrical current to melt the alloy, transitioning the material from soft to stiff, enabling robots to grip delicate objects then exert strong forces. This innovation allows a single soft robot to perform a wide range of tasks requiring both flexibility and structural support. The research was published in Advanced Functional Materials.

Why It’s Fascinating

This material is a significant leap forward because it provides soft robots with the versatility to adapt to unpredictable environments, overcoming a major limitation in their application. Previous soft robots struggled with tasks requiring variable stiffness, but this research directly addresses that, allowing for dynamic shape and force control. Within five to eight years, we could see these adaptable soft robots in surgical tools, search-and-rescue operations, and even manufacturing lines handling delicate components. Imagine a hand that can be as gentle as human skin to pick up an egg, but then instantly become as stiff as steel to open a jar. This benefits surgeons, rescue workers, and industrial automation engineers. What previously impossible tasks could soft robots accomplish with this enhanced adaptability?

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