Figure 5.

SEM images of glass substrates after ablation at a repetition rate of 25 MHz and dwell times(a)2 ms, showing no nanotip formation;(b)5 ms; and(c)10 ms showing rare occurrences of flower-like nanotips.

Samarasekera et al. Nanoscale Research Letters 2012 7:404   doi:10.1186/1556-276X-7-404
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