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Plasma Resonance Absorption Properties of the Ag-AAO Nano-Array Composite
Author(s): 
Pages: 1649-1654
Year: Issue:  12
Journal: ACTA OPTICA SINICA

Keyword:  光学材料多孔阳极氧化铝纳米有序阵列等离子共振吸收;
Abstract: 研究了Ag-AAO纳米有序阵列复合结构的等离子共振吸收特性.结果显示,Ag表面等离子共振吸收峰位于λ=352~377 nm范围内,且可通过控制Ag纳米粒子的长径比使其吸收特性发生改变.若长径比增加,吸收峰位蓝移,强度增大,峰形变锐;反之,若长径比减少,吸收峰位红移,强度减弱,峰形逐渐宽化;运用麦克斯韦-加尼特(M-G)理论模拟的计算结果与实验规律基本相符,并较好地阐释了Ag表面等离子共振吸收峰的频移与其纳米粒子长径比之间的一些依赖关系.
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