HD Plas Logo (IMAGE) Hermes Financial Public Relations Caption HDPlas is the brand name for Haydale's split plasma processed graphenes. Credit Haydale Usage Restrictions In relation to press release from Haydale and their brand HDPlas 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.