Strain paint: noncontact strain measurement using single-walled carbon nanotube composite coatings.
basic_science · Level V
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- Record sourced from PubMed, PMID 22694748.
- Also identified by DOI 10.1021/nl301008m.
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Abstract
Composite coatings have been developed that reveal strains in underlying structural elements through noncontact optical measurement. Dilute individualized single-walled carbon nanotubes are embedded in a polymeric host and applied to form a thin coating. Strain in the substrate is transmitted through the polymer to the nanotubes, causing systematic and predictable spectral shifts of the nanotube near-infrared fluorescence peaks. This new method allows quick and precise strain measurements at any position and along any direction of the substrate.