Engineers are good at making miniscule antennas. Nowadays, we can cram antennas into our smartphones or smartwatches without much trouble. But from the perspective of those devices, the antennas inside them are still bulky and take up too much space.

Now, researchers at Drexel University in Philadelphia have developed a two-dimensional, “spray-on” antenna that can be used for wearables, IoT devices, and anything else that could conceivably benefit from thin, lightweight, and flexible antennas. They published their work today in Science Advances.