In this paper we introduce a correction in the carbon interconnects circuit models that accounts for tunneling effect between adjacent CNT shells or GNR layers, usually negligible for frequencies up to hundreds of GHz. In the THz range, isolated CNTs exhibit resonances due to slow propagation velocity: this is a well-known result at the basis of the possibility of using such structures as nano-antennas. Therefore, the CNTs, as well as the GNRs, can be used as THz interconnects only for electrically short lengths. However, the THz analysis performed by including the tunneling effect highlights a dispersive behavior and new resonances, also for electrically short lines. Thus, the tunneling reduces the frequency range of utilization of carbon interconnects (for a fixed length), or equivalently reduces their lengths (for fixed operating frequencies).
Circuital Modeling of Carbon Interconnects in the THz range
MAFFUCCI, Antonio;
2015-01-01
Abstract
In this paper we introduce a correction in the carbon interconnects circuit models that accounts for tunneling effect between adjacent CNT shells or GNR layers, usually negligible for frequencies up to hundreds of GHz. In the THz range, isolated CNTs exhibit resonances due to slow propagation velocity: this is a well-known result at the basis of the possibility of using such structures as nano-antennas. Therefore, the CNTs, as well as the GNRs, can be used as THz interconnects only for electrically short lengths. However, the THz analysis performed by including the tunneling effect highlights a dispersive behavior and new resonances, also for electrically short lines. Thus, the tunneling reduces the frequency range of utilization of carbon interconnects (for a fixed length), or equivalently reduces their lengths (for fixed operating frequencies).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.