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← ScienceWhich outcome arises when a powerful pulsed laser induces rapid heating of a thin metal film on a substrate?
A)Laser-induced forward transfer (LIFT)✓
B)Increased substrate thermal conductivity
C)Formation of stable metallic glasses
D)Augmented thin film spectral reflectivity
💡 Explanation
Laser-induced forward transfer (LIFT) occurs because the rapid thermal expansion due to focused laser-material interaction generates sufficient stress to eject the film. Therefore, LIFT enables material transfer, rather than simply altering the substrate or film uniformly under slower heating scenarios.
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