Figure 5From: Study of nanostructure growth with nanoscale apex induced by femtosecond laser irradiation at megahertz repetition rateNanotip growth induced using different pulse-width sizes under the same laser conditions. SEM images of nanotips grown on the target surface irradiated with (a) 214-, (b) 428-, and (c) 714-fs laser pulses at 0.5-ms dwell time and 16-W average laser power.Back to article page