Xiangdong Xu (IMAGE) Chalmers University of Technology Caption “One way to facilitate the efficient transport of electricity is an increase in the direct current voltage level. However, an increase in the transmission voltage adversely affects the insulation material. The resulting higher electric field stresses could be handled if the electrical conductivity of the insulation material was reduced sufficiently”, explains Xiangdong Xu, research specialist at the Department of Electrical Engineering at Chalmers University of Technology Credit Chalmers University of Technology Usage Restrictions Credit must be given to the creator. License CC BY 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.