Journal
NANO LETTERS
Volume 12, Issue 7, Pages 3497-3500Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl301008m
Keywords
SWCNT; fluorescence shifts; photoluminescence spectroscopy; structural health monitoring
Categories
Funding
- National Science Foundation [CHE-1112374]
- Welch Foundation [C-0807]
- Air Force Research Laboratory (AFRL) under the Materials and Manufacturing Directorate [FA8650-05-D-5807]
- ICAM at Rice University
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1112374] Funding Source: National Science Foundation
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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.
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