MIT Creates Tiny Batteries for Small Robots

Researchers at MIT have unveiled innovative tiny batteries designed to address the significant challenge of powering miniature robots. The size of these robots often complicates the development of essential components, particularly power sources. While some smaller systems have utilized photodiodes to harness minimal electricity, more advanced applications necessitate dedicated power solutions. The newly developed batteries measure just 0.1 millimeters in length and 0.002 millimeters in thickness, comparable to a human hair. Despite their minuscule size, these batteries can generate up to 1 volt, sufficient to power sensors, circuits, and even moving actuators. Professor Michael Strano, the senior author of the research, emphasized the potential of these batteries to enable a new wave of robotic functions, stating, “We’re building robotic functions onto the battery and starting to put these components together into devices.” Currently, the systems remain tethered to external devices, but the research team is optimistic about creating a fully enclosed power source within the robots themselves. Additionally, efforts are underway to enhance the voltage output of these batteries, which Strano believes will be foundational for future robotic developments. He likened the relationship between robots and their power sources to that of electric cars and their batteries, suggesting that these innovations could significantly advance the capabilities of tiny robotic systems in various applications, from targeted drug delivery to infrastructure monitoring.