In situ photoacoustic imaging of carbon nanotube displacements in a strained polymer matrix

摘要

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 photoacoustic images.