Effects of microwave irradiation on multiwalled carbon nanotubes of different diameters

Parker Adamson; Scott Williams

doi:10.1117/1.JNP.12.046014

10 November 2018 Effects of microwave irradiation on multiwalled carbon nanotubes of different diameters

Parker Adamson, Scott Williams

Author Affiliations +

Journal of Nanophotonics, Vol. 12, Issue 4, 046014 (November 2018). https://doi.org/10.1117/1.JNP.12.046014

Abstract

We have studied the visible and infrared radiation emitted by multiwalled carbon nanotubes (MWCNTs) of different diameters when exposed to 2.45-GHz microwaves. A comparison of the spectra suggests that MWCNTs with larger diameters emit radiation of greater intensity than those with smaller diameters. Furthermore, the MWCNTs continue 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 reveals that microwave-irradiation did not significantly impact the MWCNTs’ defect densities. The results of our experiments suggest that MWCNTs may have the potential for use in lighting technologies and that ohmic heating caused by the polarization of the MWCNTs in the microwave field is likely responsible for the observed emissions of visible and infrared radiation.

Citation Download Citation

Parker Adamson and Scott Williams "Effects of microwave irradiation on multiwalled carbon nanotubes of different diameters," Journal of Nanophotonics 12(4), 046014 (10 November 2018). https://doi.org/10.1117/1.JNP.12.046014

Received: 5 July 2018; Accepted: 29 October 2018; Published: 10 November 2018

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