Miniature Robotic Insects Achieve Record Flight Times for Indoor Pollination

Researchers at MIT have demonstrated miniature flying robots that might soon deliver precise indoor pollination, revolutionising controlled-environment farming and beyond.

• Robots hover for over 1,000 seconds, a 100-fold improvement in flight duration
• Refined wing arrangement boosts precision and reduces mechanical strain
• Potential to carry batteries and sensors for autonomous pollination tasks

Scientists at MIT have taken a significant step towards efficient indoor pollination with the debut of minuscule aerial robots that can remain in flight for more than 1,000 seconds—over 100 times longer than any previous attempt. Designed to operate in controlled, multilevel farming facilities, these tiny machines have the potential to supplement or replace traditional pollinators like bees, especially where natural methods prove challenging. By perfecting artificial pollination techniques in enclosed environments, researchers believe farmers could enhance crop yields while minimising the environmental burdens associated with conventional agriculture.

Refining the Mechanics

Drawing inspiration from insect anatomy, the robotic design has been completely overhauled to incorporate a simpler yet more efficient wing configuration. Earlier prototypes used four identical units with two wings each, but engineers found that these overlapping wings reduced lift forces. In contrast, the new version features four separate units, each supporting a single wing pointing outward from the centre. This arrangement not only minimises disruptive airflow but also makes space for potential add-ons like batteries or sensors.

Central to the enhanced endurance is a refined transmission system that links the wing flapping to artificial muscles. Each muscle, formed from soft elastomer and carbon nanotube electrodes, compresses and elongates at high frequencies to generate enough lift. By reducing mechanical strain in the motion, the technology now delivers stronger and more precise flapping while avoiding performance-sapping buckling, ultimately boosting flight time. “The amount of flight we demonstrated in this paper is probably longer than the entire amount of flight our field has been able to accumulate with these robotic insects. With the improved lifespan and precision of this robot, we are getting closer to some very exciting applications, like assisted pollination,” says Kevin Chen, senior author of the study and head of the Soft and Micro Robotics Laboratory at MIT.

Expanding Real-World Possibilities

Equipped with improved precision and control torque, the robots can execute advanced acrobatics such as double aerial flips and body rolls, flying significantly faster than comparable devices. During testing, one robot logged nearly 17 minutes of continuous flight without degrading in accuracy or stability. “At the end of the day, we’ve shown flight that is 100 times longer than anyone else in the field has been able to do, so this is an extremely exciting result,” Chen explains. The upgraded lifespan also supports the possibility of autonomous flight beyond laboratory conditions, where pollinators would locate and navigate between individual flowers.

Potential applications reach well beyond assisted pollination. With further refinements, researchers see opportunities for these tiny aerial robots in environmental monitoring, search-and-rescue missions, and even in data gathering for academic field studies. The team’s immediate goals include extending flight beyond 10,000 seconds and perfecting land-and-takeoff capabilities that replicate a bee’s precise floral interactions. Looking forward, Chen and his colleagues aim to outfit these miniature insects with the power and computing hardware needed for self-guided navigation. Their findings, published in Science Robotics, represent an important step towards harnessing the combined agility, endurance, and swarming potential of robotic pollinators for modern agriculture and beyond. If successful, this technology may help farmers maintain consistent crop production inside multilevel warehouses, effectively reducing land usage, chemical inputs, and the reliance on vulnerable insect populations.