Plasmon-mediated radiative energy transfer across a silver nanowire array via resonant transmission and subwavelength imaging.
Plasmon-mediated radiative energy transfer across a silver nanowire array via resonant transmission and subwavelength imaging.
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DOI：
10.1021/nn100578b
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发表时间：
2010-08
期刊：
影响因子：
17.1
通讯作者：
Zhangkai Zhou;Min Li;Zhongjian Yang;Xiao-niu Peng;X. Su;Zong-Suo Zhang;Jian-Bo Li;Nam-Chol Kim;Xuefeng Yu;Li Zhou;Zhong-Hua Hao;Ququan Wang
中科院分区：
文献类型：
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作者：
Zhangkai Zhou;Min Li;Zhongjian Yang;Xiao-niu Peng;X. Su;Zong-Suo Zhang;Jian-Bo Li;Nam-Chol Kim;Xuefeng Yu;Li Zhou;Zhong-Hua Hao;Ququan Wang
通过等离子体激元介导的激发能量在长度为560 nm的银纳米线阵列上的CdSe/ZnS半导体量子点之间有效转移。理论模拟揭示了近场点源激发下银纳米线阵列的亚波长成像和光谱响应。我们的研究表明，纳米系统的三个优点：有效的激子-等离子体激元转换在输入侧的阵列通过近场强耦合，定向波导和共振传输通过半波等离子体激元模式的纳米线阵列，和亚波长成像在阵列的输出侧。这些优点允许具有高效率和良好方向性的长距离辐射激发能量转移。
Efficient plasmon-mediated excitation energy transfer between the CdSe/ZnS semiconductor quantum dots (QDs) across the silver nanowire array up to 560 nm in length is observed. The subwavelength imaging and spectral response of the silver nanowire arrays with near-field point-source excitations are revealed by theoretical simulations. Our studies demonstrate three advantages of the nanosystem: efficient exciton-plasmon conversion at the input side of the array through near-field strong coupling, directional waveguidance and resonant transmission via half-wave plasmon modes of the nanowire array, and subwavelength imaging at the output side of the array. These advantages allow a long-range radiative excitation energy transfer with a high efficiency and a good directionality.