By Debaprasad Das
An replacement to Copper-Based Interconnect Technology
With a rise prominent for extra circuit elements on a unmarried chip, there's a turning out to be desire for nanoelectronic units and their interconnects (a actual connecting medium made from skinny steel movies among a number of electric nodes in a semiconducting chip that transmit signs from one aspect to a different with none distortion). Carbon Nanotube and Graphene Nanoribbon Interconnects explores new very important carbon nanomaterials, carbon nanotube (CNT) and graphene nanoribbon (GNR), and compares them with that of copper-based interconnects. those nanomaterials express virtually 1,000 instances extra current-carrying capability and considerably greater suggest loose direction than copper. as a result of their outstanding houses, CNT and GNR might quickly substitute conventional copper interconnects. devoted to proving their merits, this booklet covers the elemental thought of CNT and GNR, and gives a complete research of the CNT- and GNR-based VLSI interconnects at nanometric dimensions.
Explore the aptitude functions of CNT and Graphene for VLSI Circuits
The e-book begins with a short advent of carbon nanomaterials, discusses the newest study, and information the modeling and research of CNT and GNR interconnects. It additionally describes undefined, thermal, and mechanical houses, and structural habit of those fabrics. moreover, it chronicles the development of those primary houses, explores attainable engineering purposes and progress applied sciences, and considers functions for CNT and GNR except their use in VLSI circuits.
Comprising 8 chapters this text:
- Covers the fundamentals of carbon nanotube and graphene nanoribbon
- Discusses the expansion and characterization of carbon nanotube and graphene nanoribbon
- Presents the modeling of CNT and GNR as destiny VLSI interconnects
- Examines the applicability of CNT and GNR by way of numerous research works
- Addresses the timing and frequency reaction of the CNT and GNR interconnects
- Explores the sign integrity research for CNT and GNR interconnects
- Models and analyzes the applicability of CNT and GNR as strength interconnects
- Considers the destiny scope of CNT and GNR
Beneficial to VLSI designers operating during this region, Carbon Nanotube and Graphene Nanoribbon Interconnects presents an entire realizing of carbon-based fabrics and interconnect expertise, and equips the reader with adequate wisdom concerning the destiny scope of analysis and improvement for this rising topic.
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Additional info for Carbon nanotube and graphene nanoribbon interconnects
3 show the CNT distribution in CNT bundle of width 16 nm and thickness 32 nm (corresponding to 16-nm technology node ) with different values of CNT diameter and spacing. We considered in this work two ITRS technology nodes 32 and 16 nm. 3 for 16-nm technology nodes, respectively. 3, it is found that the sigma variation does not have any significant effect on the number of CNTs in a bundle. However, spacing variation has a large impact on the number of CNTs in a bundle. 7d corresponds to a sparse bundle with metallic fraction of 1/3, which is the value of metallic fraction statistically found.
Analyzed the effect of process variation on the resistance, inductance, and capacitance (RLC) equivalent model parameters of CNT nanointerconnects. They assumed nanointerconnects formed by bundles of SWCNT. As the number of metallic CNTs in a bundle determines the number of conducting channels in the nanointerconnect, it has a significant impact on the electrical performance of CNT bundles. Therefore, due to the process variation, the diameter is varied, and hence the equivalent RLC parameters change for a given width and thickness of the nanointerconnect.
Depending on the orientation of carbon atoms, the edge of the graphene sheet is either armchair or zigzag. Zigzag GNR is always metallic, whereas armchair GNR can be either semiconducting or metallic depending on the number of carbon rings across the width. For interconnect applications, zigzag GNR is proposed due to its metallic property. 7 Lattice structure of graphene sheet. 30 Carbon Nanotube and Graphene Nanoribbon Interconnects Due to the high resistance of monolayer GNR, a multilayer GNR structure is proposed for the interconnects [12,13].