Bio-hybrid robots flip meals waste into useful machines

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

By Celia Luterbacher

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

Though it could look uncommon, CREATE Lab head Josie Hughes explains that combining organic components with artificial elements holds important potential not solely to reinforce robotics, but in addition to assist sustainable expertise programs.

“Exoskeletons mix mineralized shells with joint membranes, offering a steadiness of rigidity and suppleness 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 during which supplies will be recycled and tailored for brand spanking new duties.”

In a paper revealed in Superior Science, Hughes and her crew reveal three robotic functions by augmenting the exoskeletons of langoustines, which had beforehand been harvested and processed for the meals business, with the exact management and longevity of artificial elements: 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 research, the CREATE Lab determined to convey collectively the structural robustness and suppleness of the exoskeletons of langoustines with the exact management and longevity of artificial elements.

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

When mounted on the motorized base, the gadget 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 quite a lot of objects ranging in dimension 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 will be separated and a lot of the artificial elements will be reused. “To our information, 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 writer Sareum Kim.

One limitation of the strategy lies within the pure variation in organic buildings; for instance, the distinctive form of every langoustine tail signifies that the two- ‘fingered’ gripper bends barely otherwise on either side. The researchers say this problem would require the event of extra superior artificial augmentation mechanisms like tunable controllers. With such enhancements, the crew sees potential for future programs 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 programs and presents useful insights for designing useful machines primarily based 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).