In situ photoacoustic imaging of carbon nanotube displacements in a strained polymer matrix†
Abstract
A non-destructive method consisting of photo-acoustic imaging and velocimetric measurement is employed to probe single-walled carbon nanotubes–polydimethylsiloxane composites before and after stress application. Tube aggregates are present from region to region and move along the stressing direction by 0.3–0.4 mm. Aggregates also split with stressing and segmentation is supported by in situ photo-acoustic images.