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Revolutionary Carbon Nanotube Films Boost GHz Waveguides

3/17/2026

27 5 Full Breakdown

Summary

Story summary

Researchers developed thin films of single-walled carbon nanotubes (SWCNTs) with optical transmittance from 60% to 98%.
The films show shielding efficiencies exceeding 50 dB in some samples.
Characterization confirmed high quality and low defect concentration.
Losses increase with thickness, from 3 dB for the thinnest to 47 dB for the thickest.
These results indicate SWCNTs could enhance dielectric waveguides in the 140–220 GHz range.

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Story summary

Researchers developed thin films of single-walled carbon nanotubes (SWCNTs) with optical transmittance from 60% to 98%.
The films show shielding efficiencies exceeding 50 dB in some samples.
Characterization confirmed high quality and low defect concentration.
Losses increase with thickness, from 3 dB for the thinnest to 47 dB for the thickest.
These results indicate SWCNTs could enhance dielectric waveguides in the 140–220 GHz range.