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Which mechanism causes increased signal attenuation in a metamaterial crystal?

A)Surface plasmon resonance coupling
B)Reduced Brillouin zone phonon scattering
C)Increased crystal grain boundary size
D)Enhanced destructive X-ray interference

💡 Explanation

Surface plasmon resonance coupling attenuates signals; energy transfers to surface plasmons, converting to heat because materials have inherent losses when excited at resonant frequencies. Therefore, resonance causes signal reduction rather than other scattering mechanisms influencing signal attenuation, under differing conditions.

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