Spray-Painting Novel Material (IMAGE) University of California - San Diego Caption UC San Diego mechanical engineering professor Renkun Chen spray paints a novel material designed that could significantly improve the cost competitiveness of solar energy by converting more than 90 percent of the sunlight it captures into heat. Funded by the US Department of Energy's SunShot Initiative, the team is tasked with coming up with a material that can last for years in the air and humidity before it needs to be repainted, a feat the team believes it is close to achieving. Credit David Baillot/UC San Diego Jacobs School of Engineering Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.