Bio-hybrid robots flip meals waste into purposeful machines

Demonstration of the robotic gripper comprised of langoustine tails. 2025 CREATE Lab EPFL CC BY SA.

By Celia Luterbacher

Though many roboticists immediately flip to nature to encourage their designs, even bioinspired robots are often fabricated from non-biological supplies like metallic, plastic and composites. However a brand new experimental robotic manipulator from the Computational Robotic Design and Fabrication Lab (CREATE Lab) in EPFL’s College of Engineering turns this development on its head: its important function is a pair of langoustine stomach exoskeletons.

Though it could look uncommon, CREATE Lab head Josie Hughes explains that combining organic components with artificial parts holds vital potential not solely to boost robotics, but additionally to assist sustainable know-how methods.

“Exoskeletons mix mineralized shells with joint membranes, offering a stability of rigidity and adaptability that permits their segments to maneuver independently. These options allow crustaceans’ speedy, high-torque actions in water, however they will also be very helpful for robotics. And by repurposing meals waste, we suggest a sustainable cyclic design course of by which supplies may be recycled and tailored for brand spanking new duties.”

In a paper revealed in Superior Science, Hughes and her workforce display three robotic purposes by augmenting the exoskeletons of langoustines, which had beforehand been harvested and processed for the meals trade, with the exact management and longevity of artificial parts: a manipulator that may deal with objects weighing as much as 500g, grippers that may bend and grasp varied objects, and a swimming robotic.

Design, function, recycle, repeat

For his or her examine, the CREATE Lab determined to carry collectively the structural robustness and adaptability of the exoskeletons of langoustines with the exact management and longevity of artificial parts.

They achieved this by embedding an elastomer contained in the exoskeleton to manage every of its segments after which mounting it on a motorized base to modulate its stiffness response (extension and flexion). Lastly, the workforce coated the exoskeleton in a silicon coating to strengthen it and lengthen its lifespan.

When mounted on the motorized base, the system can be utilized to maneuver an object weighing as much as 500 g right into a goal zone. When mounted as a gripping pair, two exoskeletons can efficiently grasp a wide range of objects ranging in measurement and form from a highlighter pen to a tomato. The robotic system may even be used to propel a swimming robotic with two flapping exoskeletal ‘fins’ at speeds of as much as 11 centimeters per second.

After use, the exoskeleton and its robotic base may be separated and many of the artificial parts may be reused. “To our data, we’re the primary to suggest a proof of idea to combine meals waste right into a robotic system that mixes sustainable design with reuse and recycling,” says CREATE Lab researcher and first creator Sareum Kim.

One limitation of the method lies within the pure variation in organic constructions; for instance, the distinctive form of every langoustine tail signifies that the two- ‘fingered’ gripper bends barely in a different way on all sides. The researchers say this problem would require the event of extra superior artificial augmentation mechanisms like tunable controllers. With such enhancements, the workforce sees potential for future methods integrating bioderived structural components, for instance in biomedical implants or bio-system monitoring platforms.

“Though nature doesn’t essentially present the optimum type, it nonetheless outperforms many synthetic methods and affords precious insights for designing purposeful machines based mostly on elegant rules,” Hughes summarizes.

Learn the work in full

Useless Matter, Dwelling Machines: Repurposing Crustaceans’ Stomach Exoskeleton for Bio-Hybrid Robots, S. Kim, Ok. Gilday, and J. Hughes, Adv. Sci. (2025).