...
首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Substrate Induced Symmetry Breaking in Penta-twinned Gold Nanorod Probed by Free Electron Impact
【24h】

Substrate Induced Symmetry Breaking in Penta-twinned Gold Nanorod Probed by Free Electron Impact

机译:自由电子碰撞探测五重孪晶金纳米棒中基质诱导的对称性断裂

获取原文
获取原文并翻译 | 示例
           

摘要

Cathodoluminescence (CL) spectroscopy and imaging in a high resolution scanning electron microscope (SEM) is used to probe and directly map the located surface plasmon resonance (LSPR) modes of a penta-twinned gold nanorod deposited on a silicon substrate. Finite-difference time-domain simulation of CL enables us to gain insight into the origin of the plasmon modes. Our experimental results and simulations demonstrate that the substrate plays a very crucial role in the observed plasmonic property of gold nanorod. We have shown that, in the visible domain of the spectrum, the plasmon mode gets split into two distinct peaks due to substrate induced hybridization of in-plane and out-of-plane modes. With increasing the refractive index of the substrate, the intensity of these hybridized modes increases. We provide a detailed analysis on the origin and coupling of various plasmon modes mediated by the substrate.
机译:阴极发光(CL)光谱和高分辨率扫描电子显微镜(SEM)中的成像用于探测和直接绘制沉积在硅基板上的五重孪晶金纳米棒的定位表面等离振子共振(LSPR)模式。 CL的时域有限差分仿真使我们能够洞悉等离激元模式的起源。我们的实验结果和模拟结果表明,基底在金纳米棒的等离子体性能中起着至关重要的作用。我们已经表明,在光谱的可见域中,由于底物诱导的平面内和平面外模式的杂交,等离子体激元模式被分成两个不同的峰。随着基底折射率的增加,这些杂化模式的强度增加。我们提供了由底物介导的各种等离激元模式的起源和耦合的详细分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号