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Characterization of SWCNT Bundle Based VLSI Interconnect with Self-heating Induced Scatterings

Published: 20 May 2015 Publication History

Abstract

Performance of single walled carbon nanotube (SWCNT) bundle- based VLSI interconnects has been studied under the strong influence of scatterings induced by self-heating. Landauer Büttiker formalism along with Fourier heat transfer equation have been used to compute interconnect scattering parameters at various cross sectional areas of the interconnection. Cross sectional temperature calculation was performed using finite difference method considering temperature dependent thermal conductivity for primitive defect-less SWCNT bundles. Using the relaxation time approximation, we have studied scattering dynamics in calculating equivalent resistance. Electronic and thermal transport equations have been coupled and solved iteratively to get accurate estimation of temperatures and resistances. Study of scattering parameters shows low backscattering however significant transmission loss. Below 100GHz, for a 1µm long interconnect with 10 nm by10 nm cross sectional area shows S21 as high as 80dB. In terahertz regime transmission parameter S21 is in the range of few hundreds dB.

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    cover image ACM Conferences
    GLSVLSI '15: Proceedings of the 25th edition on Great Lakes Symposium on VLSI
    May 2015
    418 pages
    ISBN:9781450334747
    DOI:10.1145/2742060
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 20 May 2015

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    Author Tags

    1. interconnect
    2. joule heating
    3. scattering
    4. self-heating
    5. swcnt bundle
    6. vlsi

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    • U.S. Air Force Research Laboratory

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    GLSVLSI '15: Great Lakes Symposium on VLSI 2015
    May 20 - 22, 2015
    Pennsylvania, Pittsburgh, USA

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    GLSVLSI '15 Paper Acceptance Rate 41 of 148 submissions, 28%;
    Overall Acceptance Rate 312 of 1,156 submissions, 27%

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