Surface Microstructure Formation by ns-, ps-, and fs-Laser Ablation of an Elastomer Composite

抄録

We investigated the laser ablation of an elastomer composite with nanosecond- (ns-), picosecond- (ps-) and femtosecond- (fs-) pulsed UV lasers (ns-laser: λ=248nm, τ=30ns; ps-laser: λ=263nm, τ=8ps; fs-laser: λ=248nm, τ=500fs). Upon laser irradiation, a unique microstructure on the surface of the elastomer composite (acrylate polymer) containing carbon black (particle size: 18-30nm) was observed. The laser-ablated surfaces were analyzed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The formation mechanism is discussed in terms of thermal effects induced by the different pulse durations of the lasers.