Laser-induced Bleaching of Carbon Nanomaterials Suspensions

We have studied the effect of nanosecond laser pulses on the optical properties of onion-like (OLC) and multi-wall carbon nanotubes (MWNTs) suspensions in N,N-dimethylformamide (DMF). The results demonstrate that both suspensions irreversibly bleach under high-intensity laser radiation. The bleaching is accompanied by losing optical limiting (OL) in suspensions.