Localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna
Localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna
复制标题
核心嵌入异质纳米领结天线中的局域表面等离子体共振
DOI：
10.1007/s00340-015-6095-z
复制
发表时间：
2015-07-01
影响因子：
2.1
通讯作者：
Hou, Xun
中科院分区：
文献类型：
--
作者：
Du, Guangqing;Yang, Qing;Hou, Xun
我们从理论上研究了核埋异质纳米蝶形天线中的局域表面等离子体共振。研究表明，金银纳米蝴蝶结天线的空间分布和光谱位置可以根据天线芯成分、蝴蝶结尺寸和环境填充折射率进行前所未有的调谐。可调谐的光谱和空间特性归因于核嵌入式纳米蝴蝶结内的修改的等离子体振子偶极相互作用，这可以很好地通过纳米蝴蝶结天线的尺寸以及核成分来操纵。该研究为调节核嵌入异质结的近场特性提供了基本的理解，这些异质结具有广泛的应用，如单分子荧光，Sers和光热治疗。
We theoretically investigated the localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna. It is proposed that spatial distribution and spectral position for Au-Ag nano-bowtie antenna can be unprecedentedly tuned with respect to core ingredient, bowtie size and filling refractive index of environment. The tunable spectral and spacial properties are attributed to the modified plasmon dipole interaction within the core-embedded nano-bowtie, which can be well manipulated by the size of nano-bowtie antenna as well as the core ingredient. The study provides basic understanding for tuning near-field properties in core-embedded heterobowties for a wide range of applications such as single-molecule fluorescence, SERS and photo-thermal therapy.