Repeater insertion for carbon nanotube interconnects

In this reported work, the effects of repeater insertion on the electrical performance of carbon nanotube (CNT) interconnects are studied theoretically. It is shown that the time delay of CNT interconnects, when the length becomes larger than the transition length, can be effectively suppressed by inserting a series of equispaced repeaters. Furthermore, the impact of contact resistance on the repeater insertion is examined and compared. As the single-walled CNT interconnects can endure large contact resistance, its optimal repeater insertion can be determined analytically by neglecting the contact resistances. However, for multi-walled CNT interconnects, the contact resistance must be taken into account in the design of optimal repeater insertion when it exceeds a certain value.