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← ScienceWhich issue worsens under pulsed laser ablation of a microfluidic channel?
A)Increased channel wall roughness✓
B)Reduced fluid flow velocity
C)Enhanced reagent mixing efficiency
D)Improved channel transparency afterward
💡 Explanation
Increased channel wall roughness occurs because, with each pulse, thermal shock effects the process named spallation. Therefore, there's greater material removal and cracking on the channel walls with each laser pulse rather than creating a smooth ablation; other options can result from controlled ablation.
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