样品退火后，表面等离子体共振吸收峰红移，而伴峰消失。
After annealing, the peak attributed by the SPR shifts to red and the other peak disappears.
由于树枝状的特殊结构，其等离子体共振吸收峰出现较大的宽化。
The plasmon response absorption peak broadens due to the special dendritic nanostructure.
研究表明，银的等离子体共振吸收峰的移动是尺寸效应和表面效应共同作用的结果。
The shift in absorption spectra of the silver plasmon band is explained in terms of surface effects and size effects.
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