For tip‐enhanced Raman spectroscopy (TERS), the recently developed plasmon‐tunable tip pyramid, composed of a gold micropyramidal body with a nanopyramid end, makes it possible to obtain spectral enhancements in 2D systems up to two orders of magnitude higher than what is found in the literature. Herein, the optical properties of these tips are explored, including the field‐enhancement dependence on nanopyramid edge length (L), its apex diameter (D), tip–sample distance (Z), and the presence of a metallic micropyramid body. The study shown herein rationalizes the optical properties of these tips, important for understanding the related TERS results.

中文翻译：

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等离子可调谐尖端金字塔的光学特性，用于尖端增强拉曼光谱

对于尖端增强拉曼光谱（TERS），最近开发的由等离子可调的尖端金字塔由端部为纳米金字塔的金微金字塔体组成，可以在二维系统中获得比其高两个数量级的光谱增强。在文献中发现。在本文中，探索了这些尖端的光学特性，包括场增强对纳米锥棱边长度（L），其顶点直径（D），尖端-样品距离（Z）以及金属微金字塔体的存在的依赖性。本文显示的研究合理化了这些笔尖的光学特性，这对于理解相关的TERS结果非常重要。