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Which outcome occurs when rapid thermal cycling stresses amorphous silicon?

A)Crystallization increases material density
B)Viscosity significantly reduces flow
C)De-wetting improves surface adhesion
D)Sublimation increases material integrity

💡 Explanation

Crystallization causes densification due to atomic structural alignments rather than the disordered amorphous state; this is Ostwald's step rule. Therefore, increased brittleness arises because crystallization reduces flexibility and increases stress concentration points, rather than improving material properties under thermal stress.

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