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Which risk increases within an automated nanofabrication process when femtosecond laser pulses overlap?

A)Reduced material ablation efficiency
B)Increased heat-affected zone formation
C)Lower surface feature resolution
D)Enhanced coherent artifact generation

💡 Explanation

Increased heat-affected zone formation arises because thermal diffusion occurs during pulse overlap leading to higher average temperatures and **heat accumulation**, therefore damaging surrounding materials rather than precise structures because lower temperatures could have been achieved with non-overlapping pulses.

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