A self-cleaning solution for solar panels? Egyptian scientists have created a self-cleaning nano coating to enhance solar panels’ efficiency by 30%, according to a paper (pdf) produced by Al Azhar University and published last week in Scientific Reports. The hydrophobic layer protects the panels by minimizing the buildup of dust on surfaces over time saving on cost, effort, and the water needed for cleaning.

For the science nerds: The coating is composed of ethanol and isopropanol in combination with silicon dioxide (SiO2) and polydimethylsiloxane (PDMS).