hBN with platinum (IMAGE) Penn State Caption Defects in the lattice structure of hexagonal boron nitride can be detected with photoluminescence. Researchers shine a light with a color or energy on the material and get a different color from the defect. In addition, the figure shows hydrogen bubbles being generated from these defects that contain catalyst atoms (gray and dark spheres attached to the vacancies). Credit Elizabeth Flores-Gomez Murray, Yu Lei and Kazunori Fujisawa, Penn State Usage Restrictions non commercial use only License Original 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.