Molecular Transistor (image) Yale University Caption Engineers adjusted the voltage applied via gold contacts to a benzene molecule, allowing them to raise and lower the molecule's energy states and demonstrate that it could be used exactly like a traditional transistor at the molecular level. Credit Hyunwook Song and Takhee Lee Usage Restrictions With credit given. 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.