A Multi-Fidelity Polynomial Chaos Approach for Uncertainty Quantification of MWCNT Interconnect Networks in the Presence of Imperfect Contacts

In this paper, a polynomial chaos (PC) approach based on the concept of multi-fidelity algorithms is presented for uncertainty quantification of multi-walled carbon nanotube (MWCNT) interconnect networks exhibiting imperfect contacts. The salient feature of the proposed approach is the development of a new low-fidelity model where each MWCNT conductor is represented as multiple parasitically coupled equivalent conductors depending on the nature of the contact resistance of each shell making up that conductor. This proposed low-fidelity model is provably more accurate than existing low-fidelity models, thereby leading to even faster construction of PC metamodels than previously possible.