Figure 6.

Effect of laser pulse repetition rate on plasma expansion and nanotip growth. Nanotips generated for the average laser power of 16 W for pulse repetition rates of (a) 4, (b) 8, and (c) 13 MHz; the dwell time was 0.5 ms.

Patel et al. Nanoscale Research Letters 2013 8:185   doi:10.1186/1556-276X-8-185
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