tiny robot

MIT engineers have built a tiny swimming robot roughly the size of a stick of gum, driven by a single sheet of living mouse muscle tissue less than 15 micrometres thick. Blue light at 470 nanometres makes the muscle cells contract, bending gel fins that steer the robot through a maze at about four body lengths per minute. The work highlights how biohybrid robotics could one day produce miniature swimmers for medical or research uses.

Researchers have unveiled a tiny robot that extends its battery life by harvesting energy through a skin-like material on its feet. The technology could allow small robots to operate for longer without recharging, a persistent limitation in miniature robotics. Details of how the power is generated and how much it improves endurance have not been widely reported yet.

Researchers at the University of Washington have developed DirectHop, a small robot capable of hopping to get around. The compact machine is drawing attention for how jumping locomotion could let tiny robots navigate terrain that wheeled or walking robots struggle with, and local coverage is introducing the device to a wider audience.

Roboticists have unveiled a tiny, frog-inspired robot capable of hopping across wet surfaces and swimming in water. The design mimics frog locomotion, combining jumping and aquatic movement in one small machine. The demonstration is drawing attention for what it suggests about the future of amphibious robotics, potentially useful in exploration, search and rescue, or environmental monitoring in wet and flooded environments.

Engineers have unveiled a tiny robot modeled on the feather star, a marine crinoid, that can spin and swim underwater using only two actuators. The design mimics the organism's feather-like arms to generate efficient propulsion with a minimal actuator count, a promising approach for low-cost, energy-efficient swimming robots and underwater exploration vehicles.

A macro photograph of a juvenile jumping spider is drawing attention from nature photographers. The image highlights the spider's flat, square cephalothorax, which carries eight eyes including two large forward-facing principal eyes, with additional eyes set on the sides and rear corners. Commenters marvel that the arrangement gives the tiny spider full-circle vision, with some saying the creature looks like a cool little robot.

Engineers have developed a small jumping robot that operates without an onboard battery, drawing its power instead from infrared light aimed at it from outside. The design could point to lighter, longer-running microrobots, since batteries are typically the heaviest component of tiny machines. Coverage highlights the beam-powered approach as a potential route for small robots used in inspection, search and confined-space work.

Researchers in the EU-funded STENTBOT project have developed tiny robots designed to deliver unprecedented treatments for brain damage, the European Commission's research service reports. The micro-robots could open new ways to reach and treat damaged areas of the brain that are otherwise difficult to access with conventional tools, marking a step forward in medical robotics.

MIT researchers have developed an aquabot — a paper-thin swimming robot powered by living muscle cells rather than motors or batteries. The cell-driven swimmer can navigate its way through a maze, demonstrating precise, untethered movement at tiny scales. The work highlights how biological actuators could enable soft, miniature robots for medicine or environmental sensing, and it is drawing attention across robotics and biotech communities.