TAMPERE, Finland — It’s no Tinkerbell, but it might be the closest we’ll get to seeing a real-life fairy. A team of engineers is developing a small fairy-like robot that moves with the power of wind and is controllable using light. Researchers in Finland say these dandelion-inspired smart robots could help save the environment, taking over for pollinators (like bees) who are disappearing from nature.
“Superior to its natural counterparts, this artificial seed is equipped with a soft actuator. The actuator is made of light-responsive liquid crystalline elastomer, which induces opening or closing actions of the bristles upon visible light excitation,” says Hao Zeng, an academy research fellow and the leader of the Light Robots group at Tampere University, in a media release.
Past work using stimuli-responsive polymers has created soft-bodied robots that can walk, swim, and jump. Until now, however, no one has been successful in making these types of robots fly. The fairy-like robot contains several features that make it capable of flying. It has a large number of empty spaces that supports a lightweight structure. It also easily floats through the air when the wind hits it. Additionally, the robot has a stable separated vortex ring that allows for long-distance wind-assisted traveling.
“The fairy can be powered and controlled by a light source, such as a laser beam or LED,” Zeng says.
Shining light on the robot can help modify the shape of its dandelion seed-like structure. The robot manually adapts to wind direction and force changes by altering its shape. A light beam also helps to control when it is ready to launch and land.
Could this robot do the job of bees?
The fairy isn’t just for show and tell; they could help pollinate our environment. With some more tweaking, the engineering team has hopes that the dandelion-shaped robot could use sunlight rather than a single light beam to operate. If so, it could potentially carry micro-electronic devices like GPS and sensors on its journey.
“It sounds like science fiction, but the proof-of-concept experiments included in our research show that the robot we have developed provides an important step towards realistic applications suitable for artificial pollination,” adds Zeng.
With more fairy robots floating on the wind, scientists could use millions of artificial dandelion seeds to carry pollen. The sunlight could help steer the fairies toward specific areas with trees and flowers waiting for pollination.
“This would have a huge impact on agriculture globally since the loss of pollinators due to global warming has become a serious threat to biodiversity and food production,” Zeng concludes.
Another improvement Zeng and the team are trying to make is controlling the precision of how fairies land on plants and trees. Additionally, to make the robot eco-friendly, they hope to make them biodegradable and recyclable.
The study is published in the journal Advanced Science.
it’s nice to have something that can polinate for us, now we are killing all the bees, but wouldn’t it also be an idea to stop killing them in the first place?