Hole Polaron (IMAGE) University of Texas at Austin Caption Artistic rendering of a hole polaron in hexagonal boron nitride. The white and blue spheres represent boron and nitrogen atoms, respectively, the orange isosurface is the hole polaron in a single boron nitride layer that is being exfoliated. Hole polarons in single-layer boron nitride are localized wave packets extending over approximately 1 nm (1 nm = 1 billionth of a meter). Courtesy of F. Giustino. Credit Feliciano Giustino, Oden Institute. Usage Restrictions By permission 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.