• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Self-assembly nanoparticle based tripetaloid structure arrays as surface-enhanced Raman scattering substrates
【24h】

Self-assembly nanoparticle based tripetaloid structure arrays as surface-enhanced Raman scattering substrates

机译：基于自组装纳米颗粒的三倍体结构阵列作为表面增强拉曼散射基质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper reports a novel highly ordered tripetaloid structure array (TPSA) which performs very well as an active surface-enhanced Raman scattering (SERS) substrate. The TPSA is easily fabricated by anisotropic etching of a self-assembly silica-nanoparticle bilayer and a subsequent metal deposition step, with notable uniformity and reproducibility. Electromagnetic simulation indicates that the narrow inter-gaps and edge protrusions in the TPSA act as hot spots. In addition, the peak electromagnetic field intensity in the inter-gaps changes slightly and periodically as the polarization of the incident light varies from 0°to 360°. SERS experiments show that the SERS enhancement factor (EF) of a Au-film-covered TPSA is 12 times higher than that of regular Au-film-over-nanoparticles, and not sensitive to the polarization of the incident light. The spatially averaged EF of the TPSA is as high as 5.7×10 ~6, and the local EF of its hot spots is much higher.
机译：本文报道了一种新型的高度有序的三倍体结构阵列（TPSA），其作为有源表面增强拉曼散射（SERS）衬底的性能非常好。 TPSA易于通过自组装二氧化硅纳米颗粒双层的各向异性蚀刻以及随后的金属沉积步骤来制造，具有显着的均匀性和可重复性。电磁仿真表明，TPSA中狭窄的间隙和边缘突起充当热点。另外，间隙的峰值电磁场强度随着入射光的偏振从0°到360°的变化而略有周期性地变化。 SERS实验表明，金膜覆盖的TPSA的SERS增强因子（EF）比普通金膜纳米颗粒的SERS增强因子高12倍，并且对入射光的偏振不敏感。 TPSA的空间平均EF高达5.7×10〜6，热点的局部EF更高。

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