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Udaya Sri Anabathula,
D. Vinay Kumar,
- Research Scholar, Department of Mechanical Engineering, Vignan’s Foundation for Science Technology and Research, Vadlamudi, Andhra Pradesh, India
- Associate Professor, Department of Mechanical Engineering, Vignan’s Foundation for Science Technology and Research, Vadlamudi, Andhra Pradesh, India
Abstract
In this research, 11-atom zig-zag carbon nanotubes (ZCNTs) and 11-atom armchair graphene nanoribbons (AGNRs) were studied under applied bias voltages at 50, 150, and 300 millivolt levels. The focus was on understanding their behaviour concerning transmission qualities, current-voltage (I-V) characteristics, and energy-momentum (E-K) diagrams. The Non-Equilibrium Green’s Function (NEGF) approach was employed to analyse various electronic properties for ZCNTs and AGNRs, including transmission, E-K relationships, and I-V characteristics. The results show that for the same number of atoms and material, the bandgap of AGNRs is lower than that of ZCNTs, associated with an increased probability of electron transmission in a constrained energy range. When integrated into polymer composites, the wider ribbon widths of AGNRs compared to ZCNTs enhance electrical conductivity within the polymer matrix. AGNRs’ I-V characteristics exhibit linear behaviour under a 50-mV bias, whereas at 150 and 300 mV, a plateau in current flow is observed after reaching a peak voltage. Conversely, ZCNTs display non-linear behaviour, with current flow decreasing after reaching a peak at 300 mV. These differences are attributed to the robust electron-electron bonds and the effects of quantum confinement, which can influence the performance of graphene- or nanotube-reinforced polymer nanocomposites in electronic applications. This study provides valuable insights into the electrical characteristics of AGNRs and ZCNTs, offering promising opportunities for their integration into polymer-based nanoelectronics composites for applications in flexible electronics, electromagnetic shielding, and energy storage systems.
Keywords: AGNRs, ZCNTs, Polymer Nanocomposites, Current-Voltage Characteristics, energy-momentum.
Udaya Sri Anabathula, D. Vinay Kumar. Comparison of 11-Atom Armchair Graphene Nanoribbons and Zig-Zag Carbon Nanotubes in Polymer Composites Under Various Bias Voltages: A Study of Electronic and Transmission Properties. Journal of Polymer and Composites. 2025; ():-.
Udaya Sri Anabathula, D. Vinay Kumar. Comparison of 11-Atom Armchair Graphene Nanoribbons and Zig-Zag Carbon Nanotubes in Polymer Composites Under Various Bias Voltages: A Study of Electronic and Transmission Properties. Journal of Polymer and Composites. 2025; ():-. Available from: https://journals.stmjournals.com/jopc/article=2025/view=196573
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Journal of Polymer and Composites
Volume | |
Received | 05/10/2024 |
Accepted | 13/01/2025 |
Published | 23/01/2025 |