Strain paint: noncontact strain measurement using single-walled carbon nanotube composite coatings.
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.
Department of Physics, University of Houston - Clear Lake, 2700 Bay Area Boulevard, Houston, Texas 77058, United States.
Paul A
PA
Withey
Venkata Srivishnu M
VS
Vemuru
Sergei M
SM
Bachilo
Satish
S
Nagarajaiah
R Bruce
RB
Weisman