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arXiv · 1907.06322

Effects of Microwave Irradiation on Multiwalled Carbon Nanotubes of Different Diameters

P. Adamson·S. Williams
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Abstract

We have studied the visible and infrared radiation emitted by multi-walled carbon nano-tubes of different diameters when exposed to 2.45 GHz microwaves. A comparison of the spectra suggests that multi-walled carbon nano-tubes with larger diameters emit radiation of greater intensity than those with smaller diameters. Furthermore, the multi-walled carbon nano-tubes continued to emit visible and infrared radiation over the course of several microwave-irradiation cycles, with no degradation in the intensity of the emitted radiation. A comparison of Raman D- to G-band peak-intensity ratios revealed that microwave-irradiation did not significantly impact the multi-walled carbon nano-tubes' defect densities. The results of our experiments suggest that multi-walled carbon nano-tubes may have the potential for use in lighting technologies, and that ohmic heating caused by the polarization of the multi-walled carbon nano-tubes in the microwave field is likely responsible for the observed emissions of visible and infrared radiation.

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P. Adamson, S. Williams. 2019-07-15. Effects of Microwave Irradiation on Multiwalled Carbon Nanotubes of Different Diameters. https://doi.org/10.1117/1.jnp.12.046014

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