Journal Article•
Single Walled Carbon Nanotube Interconnects For Future Integrated Circuits
TL;DR: In this paper, single walled carbon nanotube bundles as VLSI interconnects at 20nm, 16nm, 14nm and 12nm technology nodes were proposed.
Abstract: This paper proposes single walled carbon nanotube bundles as VLSI interconnects at 20nm, 16nm, 14nm and 12nm Technology nodes. Effects of voltage scaling on propagation delay and power dissipation of the interconnects is analyzed. Input voltages ranging from 0.3 V (deep subthreshold) to 0.8 V (moderate subthreshold) are considered. After formulating the equivalent single conductor RLC transmission line circuit of the interconnects, simulations of a driver-interconnect-load setup using SmartSPICE was carried out. Later, electric field simulations of coupled interconnects considering Miller capacitance effects for in-phase and out-of-phase conditions was done. Results show that voltage scaling is essential as the technology node size decreases to ensure low-power devices.
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TL;DR: In this article, the authors presented an accurate modeling hierarchy for mixed CNT bundle interconnects, where single-walled CNTs and multi-wall CNT bundles were modelled as equivalent single conductor transmission lines and then combined to form a mixed-CNT bundle Interconnect, which is basically a multiple-equivalent single conductor model.
Abstract: Presented for the first time is an accurate modelling hierarchy for mixed CNT bundle interconnects. Single-walled CNTs and multi-walled CNTs have been modelled as equivalent single conductor transmission lines and then combined to form a mixed CNT bundle interconnect, which is basically a multiple equivalent single conductor model. Two multiple equivalent single conductor interconnects have been taken to form the multiconductor transmission line model. The delays from transient analysis for both models for a unit bundle have been compared with the corresponding ones for SWCNT bundles and MWCNTs that exist in the literature. It is found that mixed CNT bundle interconnects are superior to both SWCNT bundle and MWCNT interconnects in terms of delay.
32 citations
"Single Walled Carbon Nanotube Inter..." refers methods in this paper
...Later, we performed transient analysis and showed that MCBs can outperform SWCNT and MWCNT interconnects at 22nm technology node [8]....
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...We had earlier analyzed CNT bundles that comprise both SW and MW CNTs in it [8, 9]....
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TL;DR: This is the first review on MCB VLSI interconnects and the ability to conduct high current at high temperatures through the 1D structure is making the CNT interconnect technology an attractive one.
31 citations
"Single Walled Carbon Nanotube Inter..." refers background in this paper
...Fortunately, Carbon nanotubes are emerging as the new material which are possible candidates as nano scale interconnects [2]....
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TL;DR: TVLSI remains the premier archival journal for university researchers and industry practitioners in the broad area of VLSI system design and is expected to cross 800 submissions before the end of the year.
Abstract: As I start my second two-year term (2017–2018) as the Editor-in-Chief (EIC) of the IEEE Transactions on Very Large Scale Integration Systems (TVLSI), I wish the TVLSI readership a very happy new year and continued professional success. It gives me great pleasure to report on the state of the journal and our performance metrics. Over the past two years, TVLSI has seen a healthy increase in the number of submissions—from 687 in 2014 to 770 in 2015, and at the time of writing of this editorial, we are at 760 submissions for 2016. We expect the number of submissions for 2016 to cross 800 before the end of the year. TVLSI, therefore, continues to be the premier archival journal for university researchers and industry practitioners in the broad area of VLSI system design.
28 citations
TL;DR: In this article, a realistic inter-carbon nanotube (CNT) electrostatic coupling capacitance and tunnelling conductance model for a mixed CNT bundle is presented.
Abstract: This article presents a realistic inter-carbon nanotube (CNT) electrostatic coupling capacitance and tunnelling conductance model for a mixed CNT bundle. The change of potential across such a bundle necessitates the need to consider the inter-CNT capacitance in the equivalent circuit of CNT interconnects for very large scale integration circuits. The equivalent transmission line circuit model of a unit bundle containing one single-walled CNT (SWCNT) and one multi-walled CNT (MWCNT) has been shown. This new model is then used to calculate the delay induced by the inter-CNT capacitance and tunnelling conductance, which predicts the relative positioning of MW/SWCNTs in mixed CNT bundle.
24 citations
"Single Walled Carbon Nanotube Inter..." refers background or methods in this paper
...The tunneling conductance between adjacent shells in an MWCNT as well as between adjacent CNTs in a bundle was modeled [9]....
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...We also modeled the inter-CNT coupling capacitance between adjacent CNTs in a bundle [9]....
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...We had earlier analyzed CNT bundles that comprise both SW and MW CNTs in it [8, 9]....
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