Marigold-like nanoparticles developed by IIT Bombay capable of unprecedented solar-thermal conversion

https://www.news9live.com/science/marigold-like-nanoparticles-developed-by-iit-bombay-capable-of-unprecedented-solar-thermal-conversion-2320706

">72°C heated water passed through hollow copper tubes coated with marigold-like nanostructured hardcarbon florets (readily available and scalable) converts to water vapor with 186% efficiency... converting 87% infalling light into usable thermal energy... florets absorb >97% UV, visible and IR... increases temperature to 60°C... solar thermal converters used in water heaters... chemical vapor deposition is used to create the nanoparticles... coating also works on paper, elastomers, metal and terracotta"

Related: Absolicon solar collectors: 76,4 % efficient heat production to make steam
https://www.youtube.com/watch?v=Dx6gFHqCbFE