Engineering

Solving solar panels' dirty problem

From water-repellent to water-loving with ultraviolet (UV) light, surfaces are being developed that protect panels and glass facades from expensive and time-consuming cleanings.

Engineering

Researchers flip how electrical signals move liquid droplets

When medical laboratories analyze blood samples for signs of disease, they sometimes use instruments that rely on a technology called digital microfluidics. The technique uses electric signals to pull tiny droplets of the ...