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Manipulation Of Optical Properties Of Ag/cu Alloy Nanowire Arrays Embedded In Anodic Alumina Membranes

机译:嵌入阳极氧化铝膜中的Ag / cu合金纳米线阵列的光学性能的操纵。

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Arrays of Ag/Cu alloy nanowires embedded in anodic alumina membranes (AAMs) were synthesized by directly electrodepositing from a mixing electrolyte solution containing Ag~+ and Cu~(2+) ions. Manipulations of optical properties of the resulting samples were successfully achieved by tuning the molar ratio of Ag~+ and Cu~(2+) ions in the starting materials. When the ratio is less than 2:20, two surface plasma resonance (SPR) peaks corresponding to Ag and Cu appear, respectively. After annealing treatment, the SPR peak corresponding to Cu disappears, and that of Ag presents a red shift. Furthermore, this red shift can be up to 85 nm when the molar ratio of Ag~+ and Cu~(2+) reduce to 1:20, which is attributed to the transferable electrons from Cu atoms.
机译:通过直接从包含Ag〜+和Cu〜(2+)离子的混合电解液中进行电沉积,合成了嵌入阳极氧化铝膜(AAM)中的Ag / Cu合金纳米线阵列。通过调节原料中Ag〜+和Cu〜(2+)离子的摩尔比,成功实现了对所得样品光学性能的控制。当该比率小于2:20时,分别出现对应于Ag和Cu的两个表面等离子体共振(SPR)峰。退火处理后,对应于Cu的SPR峰消失,而Ag的SPR峰出现红移。此外,当Ag〜+和Cu〜(2+)的摩尔比降低至1:20时,该红移可高达85 nm,这归因于可迁移电子从铜原子转移而来。

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