(IMAGE) University of Tokyo Caption This is an Atomic Force Microscope image of the valleytronics device. The bright orange area is bilayer graphene. The light blue area shows the area of the top gate. Current is injected from the right side of the device, and converted to valley current. The valley current is converted back to charge current and detected as a voltage signal. Credit 2015 Seigo Tarucha Usage Restrictions Journalistic use relating to this research 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.