超越单分子检测水平的拉曼光谱多共振超表面

IF 1.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY EPJ Applied Metamaterials Pub Date : 2022-01-01 DOI:10.1051/epjam/2022009

Saeid Izadshenas, P. Masłowski, T. Herr, K. Słowik

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引用次数: 2

摘要

设计并优化了金属-绝缘体-光栅结构的超表面，以支持在所选分子的相干拉曼信号的增强，其数量级高于单分子检测阈值。通过调整结构来匹配罗丹明的拉曼峰来证明其可调性，然而，它的光谱响应足够宽，可以覆盖拉曼位移的范围。最后，光栅允许在不同角度照射单个超表面的不同拉曼位移值之间切换。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Multiresonant metasurface for Raman spectroscopy beyond single molecule detection level

A metasurface in the metal-insulator-grating configuration is designed and optimised to support enhancement of coherent Raman signal of selected molecules orders of magnitude above the single-molecule detection threshold. The tunability is demonstrated by adjusting the structure to match selected Raman peaks of rhodamine, however, its spectral response is broad enough to cover a range of Raman shifts. Finally, the grating allows switching between distinct values of Raman shift with a single metasurface illuminated at different angles.

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