Graphene Device Sops Up Sunlight, Heats to 160 Degrees Celsius in Seconds
This is cool, but at 85% absorptivity it's no better than coatings you can already buy. Absorber plates in glazed solar water heaters you can get in your hardware store today have numbers in the 90s.Edit: I recommend a look at the original paper instead [0]. The significant feature appears to be the ability to absorb light at a wide range of angles, rather than simply the absolute absorptivity.[0] https://www.nature.com/articles/s41566-019-0389-3