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<p>In order to reduce the crosstalk of carbon nanotube interconnects, in this paper we propose four mixed structures of carbon nanotubes and graphene nanoribbon (viz. CGMS-1, CGMS-2, CGMS-3 and CGMS-4) and establish crosstalk models for two-line and three-line structures. The electrical parameters of the proposed structure are obtained through decoupling methods, and the transfer function and bandwidth are calculated using the ABCD matrix method. Peaking inductance is also used to expand the bandwidth. The impact of crosstalk on bandwidth and delay is analyzed using two-line and three-line structures. It is found that the bandwidth of the proposed structure decreases with the increment of length, temperature and load resistance and increases with the increment of graphene thickness. The delay increases with the increment of length and temperature and decreases with the increment of graphene thickness. The changes in bandwidth and delay caused by the increase in diameter are not consistent for the four mixed structures. Compared with out-of-phase mode, the bandwidth and delay performance of mixed structures in the in-phase mode is better. In the three-line structure, the “uuu” mode has the largest bandwidth, the lowest delay and the least impact from crosstalk. Among the four mixed structures, CGMS-3 has the largest bandwidth and the smallest delay. Moreover, the bandwidth and delay performance of the mixed structures are superior to SWCNT and MWCNT and are less affected by crosstalk compared to SWCNT and MWCNT.</p>

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Electrical modeling and crosstalk analysis in coupled carbon nanotube–graphene nanoribbon mixed structure interconnects

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Zhican Lin,
  • Zhongliang Pan,
  • Weiguo Ni,
  • Xinyu Li

摘要

In order to reduce the crosstalk of carbon nanotube interconnects, in this paper we propose four mixed structures of carbon nanotubes and graphene nanoribbon (viz. CGMS-1, CGMS-2, CGMS-3 and CGMS-4) and establish crosstalk models for two-line and three-line structures. The electrical parameters of the proposed structure are obtained through decoupling methods, and the transfer function and bandwidth are calculated using the ABCD matrix method. Peaking inductance is also used to expand the bandwidth. The impact of crosstalk on bandwidth and delay is analyzed using two-line and three-line structures. It is found that the bandwidth of the proposed structure decreases with the increment of length, temperature and load resistance and increases with the increment of graphene thickness. The delay increases with the increment of length and temperature and decreases with the increment of graphene thickness. The changes in bandwidth and delay caused by the increase in diameter are not consistent for the four mixed structures. Compared with out-of-phase mode, the bandwidth and delay performance of mixed structures in the in-phase mode is better. In the three-line structure, the “uuu” mode has the largest bandwidth, the lowest delay and the least impact from crosstalk. Among the four mixed structures, CGMS-3 has the largest bandwidth and the smallest delay. Moreover, the bandwidth and delay performance of the mixed structures are superior to SWCNT and MWCNT and are less affected by crosstalk compared to SWCNT and MWCNT.