2016-03-162016-03-162016-02-09Weisman, R. Bruce, Withey, Paul A., Bachilo, Sergei M., Nagarajaiah, Satish and Vemuru, Venkata Srivishnu M., "Non-contact strain sensing of objects by use of single-walled carbon nanotubes." Patent US9255853B2. issued 2016-02-09. Retrieved from <a href="https://hdl.handle.net/1911/88627">https://hdl.handle.net/1911/88627</a>.https://hdl.handle.net/1911/88627In some embodiments, the present invention provides methods of detecting strain associated with an object by: (1) irradiating a composition that has been applied to the object, where the composition comprises semiconducting single-walled carbon nanotubes; (2) measuring an emission from the irradiated composition, where the emission comprises near infrared emission; and (3) correlating the near infrared emission to the presence or absence of strain associated with the object. In some embodiments, the aforementioned steps occur without physically contacting the object or the composition. In some embodiments, the aforementioned steps occur without utilizing Raman spectroscopy. Further embodiments of the present invention also include a step of applying the composition to the object.14 ppengUtility patentUS9255853B2