2023, Vol. 5, Issue 3, Part A

Author(s): Rajesh Mahto

Abstract: Carbon nanotubes (CNTs) are renowned for their exceptional thermal conductivity, making them promising candidates for next-generation thermal management in nanoscale devices. This paper presents a comprehensive analysis of thermal conductivity and phonon transport mechanisms in both single-walled and multi-walled CNTs. The study investigates the influence of key structural parameters such as chirality, diameter, length, and temperature on thermal performance. By comparing theoretical results from molecular dynamics (MD) simulations and Boltzmann Transport Equations (BTE) with experimental data, we identify the dominant phonon modes responsible for heat transfer and explore the conditions under which ballistic transport is maintained. Significant variations in reported thermal conductivities are attributed to scattering mechanisms, measurement techniques, and environmental factors. This research bridges the gap between idealized simulations and real-world observations, emphasizing the importance of a unified modelling framework for accurate prediction. The findings highlight the potential of CNTs in thermal interface materials, electronics cooling, and thermoelectric systems, while also outlining the challenges that must be addressed to optimize their practical applications. Overall, this study contributes to a deeper understanding of nanoscale heat transport and provides direction for future experimental and computational research in the field.

DOI: 10.33545/27068919.2023.v5.i3a.1442

Pages: 65-70 | Views: 190 | Downloads: 49

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