Scientists at the Beijing Institute of Technology have created the world’s lightest insect brain controller, turning ordinary honeybees into cyborg bees. This small device, weighing just 74 milligrams, is light enough to be carried by a bee without affecting its flight. The breakthrough allows researchers to control the movement of live cyborg bees with a 90 percent success rate.
The tiny controller attaches to a cyborg bee’s back and uses three ultra-fine needles to pierce its brain. Once connected, the system sends electronic pulses that trick the insect’s senses and guide its flight in specific directions. During laboratory tests, the cyborg bees followed commands to turn, move forward, and retreat, showing how effective this technology could be in real-world scenarios.
According to the study published on June 11 in the Chinese Journal of Mechanical Engineering, this innovation outperforms earlier cyborg controllers that were heavier and less efficient. Professor Zhao Jieliang, who led the team, explained: “Insect-based robots like these cyborg bees inherit the superior mobility, camouflage capabilities, and environmental adaptability of their biological hosts.
Compared to synthetic alternatives, they demonstrate enhanced stealth and extended operational endurance, making them invaluable for covert reconnaissance in scenarios such as urban combat, counterterrorism, and narcotics interdiction, as well as critical disaster relief operations.”
This breakthrough has attracted worldwide attention because it takes biohybrid robotics to a level never seen before. Previously, similar experiments used beetles and cockroaches with heavier devices that often made the insects slow and fatigued. A model developed in Singapore, for example, weighed three times more than the Chinese version and limited the insects’ movement to crawling instead of flying. Unlike those attempts, cyborg bees can fly naturally while following remote commands.
Bees are more capable than other insects for such applications. They can fly long distances of up to five kilometers without resting. They can also carry loads equivalent to 80 percent of their own body weight. This natural strength and endurance makes them ideal for missions. These missions often take place in areas too dangerous or inaccessible for humans or large drones.
To build the device, Zhao’s team printed microelectronic circuits on a thin, flexible polymer film. This film has a texture similar to insect wings. This ultra-light material houses various components. For example, it includes an infrared receiver for remote communication.
The team tested the system with nine different pulse settings. They carefully matched electronic signals to the insects’ natural motor responses. As a result, bees were able to change direction mid-flight with high precision. Meanwhile, cockroaches in earlier tests followed straight paths with minimal deviation.
The South China Morning Post reports that researchers believe this technology could eventually support military scouting, disaster relief, and other critical operations. For instance, swarms of mind-controlled bees could navigate through rubble after earthquakes. They could also enter tight spaces to locate survivors. In military applications, their small size and natural appearance could make them undetectable as surveillance tools.
However, the current system still requires wired power. This limits its range and deployment in open environments. A battery light enough for a bee to carry has yet to be developed. At the same time, the battery must be strong enough to power the device. Moreover, different insects respond differently to electronic signals. Therefore, the same controller may not work universally across species.
The project also raises serious ethical and privacy concerns. Turning insects into biological spy drones could lead to a future where swarms of tiny cyborgs are used for mass surveillance. Critics warn that such technology, if misused, could create a new type of monitoring system. This system would be invisible to the human eye.
Professor Zhao acknowledges these concerns. Nevertheless, he emphasizes the potential benefits for humanitarian missions. Zhao said, “In future research, precision and repeatability of insect behaviour control will be enhanced by optimising stimulation signals and control techniques.”
He added, “Expanding the functional modules of the control backpack will also improve environmental perception capabilities. This will allow insect-based robots to perform better in complex operational settings such as reconnaissance and detection missions.”
Critics have compared the research team’s work to the fictional parasitic fungus cordyceps. This fungus famously takes control of insects in nature. It also inspired the zombie virus in the popular series The Last of Us. This is science, not science fiction. However, the similarities show how deeply this technology taps into nature’s most efficient systems.
