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PUBLICATIONS

Electromagnetic Scattering Analysis of Asymmetric Carbon Nanotube Dimers for Sensing Applications

Published

Author(s)

Sumitra Dey, Edward Garboczi, Ahmed M. Hassan

Abstract

In this work, we study the electromagnetic scattering characteristics of asymmetric carbon nanotube (CNT) dimers. We show that the configurational asymmetry in the CNT dimer assembly creates a unique field distribution in the vicinity of the dimer, which in turn generates two distinct resonances representing the bonding and anti-bonding modes. The sensitivity of these two modes to differences in the CNT lengths, orientations, and shapes, is studied. We also show the application of asymmetric CNT dimers for the contactless detection of nano-particles. The presence of a nano- particle (NP) in the vicinity of the CNT dimer perturbs the dimer's field distribution and causes unequal shifts in the bonding and anti-bonding resonances depending on the NP location. By studying the differences in these shifts, we show that the relative location of the NP can be reconstructed. The computational experiments performed in this work show how asymmetric CNT dimers can be used for novel sensing applications.
Citation
IEEE Transactions on Antennas and Propagation
Volume
31
Pub Type
Journals

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DOI Link

Keywords

Carbon nanotubes (CNTs), dimers, bonding modes, anti-bonding modes, sensor, method of moment for arbitrary thin wire (MOM-ATW)
Sensors, Nanotechnology, Nanoplasmonics, Nanomaterials, Modeling and computational material science and Electromagnetics

Citation

Dey, S. , Garboczi, E. and Hassan, A. (2020), Electromagnetic Scattering Analysis of Asymmetric Carbon Nanotube Dimers for Sensing Applications, IEEE Transactions on Antennas and Propagation, [online], https://doi.org/10.1088/1361-6528/aba058 (Accessed October 6, 2024)

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Created July 22, 2020, Updated July 23, 2024