Figure 1From: Characterization of MHz pulse repetition rate femtosecond laser-irradiated gold-coated silicon surfaces SEM and TEM micrographs of the sample surface irradiated at laser radiation fluence (0.5 J/cm 2 ) with interaction time (1 ms) and the nanoparticles aggregate respectively. (a) surface featuring weblike nanoparticles around the laser spot, (b, c) Si/Au-Si nanoparticles in the aggregate structure.Back to article page