| 1 | "We are also developing more complex graphene circuits for even more sophisticated devices, " says Lin. | |
| 2 | An electrical relay used to control the flow of power in a circuit. | |
| 3 | Semiconductor devices can perform a variety of control functions in electronic equipment. | |
| 4 | Such structures could be used in applications like solar cells or high-frequency devices. | |
| 5 | The Van de Graaff generator later became a key component of the early particle accelerators. |