IBM developed a 10 Ghz integrated circuit (IC) made from Graphene. This research proved that graphene can be fabricated on a wafer - similar to silicon chips and graphene transistors can be bonded with components from other materials.
According to IBM, there are big advantages in using graphene in analog components, and that's where IBM is focusing its work. IBM already developed a 100Ghz graphene transistor and plans to develop a 1Thz one. In a different research, IBM developed a graphene transistor with a record cut-off frequency of 155 Ghz and the shortest gate length ever .