An Electrical Tree (image) Chalmers University of Technology Share Print E-Mail Caption An electrical tree, which is a major electrical breakdown mechanism of insulation plastic. Fullerenes prevent electrical trees from forming by capturing electrons that would otherwise destroy chemical bonds in the plastic. Credit Anette Johansson and Markus Jarvid Usage Restrictions None Share Print E-Mail 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.