Enhanced Transmittance and Continuum Generation in the Hybrids of Au Nanoparticles and Ag Nanorods
Enhanced Transmittance and Continuum Generation in the Hybrids of Au Nanoparticles and Ag Nanorods
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DOI：
10.1021/jp504941k
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发表时间：
2014-07
影响因子：
3.7
通讯作者：
Ya-lan Wang;Zhongjian Yang;Zong-Suo Zhang;Xiao-niu Peng;Li Zhou;Zhong-Hua Hao;Ququan Wang
中科院分区：
文献类型：
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作者：
Ya-lan Wang;Zhongjian Yang;Zong-Suo Zhang;Xiao-niu Peng;Li Zhou;Zhong-Hua Hao;Ququan Wang
金属纳米结构的表面等离子体共振是增强纳米尺度上光与物质相互作用的有效工具。等离子体激元干涉进一步加剧了局部电磁场的增加，这提供了能够操纵金属纳米材料的光学吸收、散射和发射的优点。本文报道了银纳米棒和Au纳米粒子的混合物（AgNR-AuNP）中的等离子体干涉。具体来说，我们证明了金纳米颗粒的传输增强了100%，通过调整的金纳米颗粒的局部表面等离子体共振（SPR）到780 nm，共振与纵向SPR的AgNR阵列，有效地放大连续产生在近红外区域。这些观察结果显示了在被动和主动等离子体纳米器件中应用的前景。
Surface plasmon resonance of metal nanostructures is an efficient tool to enhance light–matter interactions on the nanoscale. Plasmon interference further intensifies the increase in local electromagnetic fields, which provides the advantage of being able to manipulate the optical absorption, scattering, and emission of metallic nanomaterials. In this paper, we report plasmonic interference in the hybrids of Ag nanorods and Au nanoparticles (AgNR–AuNP). Specifically, we demonstrate that the transmission of AuNPs is enhanced by ∼90% by tuning the localized surface plasmon resonance (SPR) of the AuNPs to 780 nm, resonant with the longitudinal SPR of AgNR array, efficiently amplifying continuum generation in the near-infrared region. These observations show promise for applications in both passive and active plasmonic nanodevices.