Acoustic performance of epoxy-based composites incorporating fluorescent single-walled carbon nanotubes

Verena Wulf, Ada Pui-yan Hung, Adi Hendler-Neumark, Weibai Li, Olga Shamis, Michael Gozin, Xiaodong Huang, Alan Kin Tak Lau*, Gili Bisker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Noise pollution is a threat to health and well-being, and its prevalence has been increasing in recent years. Materials demonstrating sound-dampening capabilities, such as epoxy resins, have been widely used for reducing the noise burden, and the incorporation of nanomaterials can further improve their performance. Here, we incorporated fluorescent single-walled carbon nanotubes (SWCNTs) at various concentrations into epoxy resins and tested the acoustic performance of these nanocomposites over a wide frequency range. Comparing different SWCNT dispersants, DNA-SWCNT/epoxy composites resulted in the highest transmission loss, showing 18% improvement in sound-dampening compared to epoxy alone. Further, the transmission loss depended on the DNA-SWCNT concentration, with an optimal concentration of 2 mg L-1. Finally, the near-infrared fluorescence of the SWCNTs was used to characterize their distribution within the epoxy resin. Our results open new avenues for enhancing the acoustic performance of composites with carbon nanomaterials while utilizing their optical properties for material characterization.

Original languageEnglish
Article number107667
JournalComposites Part A: Applied Science and Manufacturing
StatePublished - Oct 2023


FundersFunder number
Zimin Institute for Engineering Solutions Advancing Better Lives
European Research Council101039127
Ministry of Science, Technology and Space3-17426
Israel Science Foundation456/18, 196/22
Tel Aviv University
Nicholas and Elizabeth Slezak Super Center for Cardiac Research and Biomedical Engineering
Ministry of Defense


    • Carbon nanotubes and nanofibers
    • Multifunctional composites
    • Nanocomposites


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