Scientists at the Georgia Institute of Technology have developed a soft, hydrogel-based lens that operates without any external power. This robotic lens offers exceptional vision, capable of resolving tiny details such as individual hairs on an ant’s leg. The lens represents a new technology, which the team calls a photoresponsive hydrogel soft lens (PHySL).
The soft robotic 'eye' can automatically adjust its focus in reaction to light, requiring no external power. This highly advanced robotic lens is sensitive enough to identify the hairs on an ant's leg or the segments of a pollen grain.
The soft robotic eye could be used in flexible robots for navigating tight or hazardous environments, in medical devices and wearable tech for precise vision without electronics, and in microscopes or research tools to observe tiny details. It could also enhance drones, autonomous vehicles, and assistive devices, offering high-resolution vision where traditional cameras or human eyes fall short.
The lens could enable “soft” robots with advanced vision that require no electronics or batteries. Soft robotics, made from materials like silicone, gels, or elastic, is used in wearable tech and autonomous devices that operate in tough or hazardous environments, according to lead author Corey Zheng, a biomedical engineering Ph.D. student at Georgia Tech. Unlike traditional robots with rigid sensors and electronics, soft robots are highly flexible, and this new robotic “eye” could significantly expand their capabilities.
Researchers view PHySL as a promising innovation for soft robots, adaptive medical tools, and smart wearables, helping overcome the limits of human vision. Zheng and his advisor Shu Jia demonstrated that the lens can replace traditional microscope lenses, resolving tiny details such as the 4‑micrometer gap between a tick’s claws, 5‑micrometer fungal filaments, and 9‑micrometer hairs on an ant’s leg.