Graphene-nanowire Hybrid Device Cartoon (IMAGE) DOE/Brookhaven National Laboratory Caption Cartoon of the graphene-P3HT nanowire hybrid field-effect transistor. Placing the nanowire mesh (red) on top of the graphene (purple) improves the device's response to light. The silicon dioxide/silicon (grey) substrate, or "gate" electrode, controls the flow of electrical current between the electron source and drain (in this case, Au, or gold, electrodes). The scientists used electron-beam lithography to pattern the device. Credit <i>ACS Photonics</i>, Oct. 12, 2018 Usage Restrictions None 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.