Surface-enhanced raman scattering substrate structure based on double catenarian structure and preparation method thereof
By constructing a hollow nanocavity with a double catenary structure and introducing a two-dimensional material layer, plasma-exciton coupling was achieved, which solved the problems of limited enhancement capability and limited control range of existing SERS substrate structures, and improved the sensitivity and repeatability of Raman signal detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN UNIV
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing SERS substrate structures suffer from problems such as strong structural randomness, poor repeatability, limited local electric field enhancement capability, and limited control range in improving Raman signal intensity, making it difficult to achieve the synergistic effect of multiple enhancement mechanisms.
A surface-enhanced Raman scattering substrate structure based on a double catenary structure is adopted. By constructing a hollow double catenary nanocavity and introducing a two-dimensional material layer, the parameters are adjusted to achieve the matching of the plasmonic resonance peak and the exciton resonance peak, thereby exciting plasmonic-exciton coupling and forming a plasmonic-exciton hybrid state to enhance the local electromagnetic field.
It significantly improves the optical field localization capability of the nanocavity, realizes the excitation of various high-order plasmon modes, improves the detection sensitivity and electric field intensity of Raman signals, and provides a wider optical control range and higher repeatability.
Smart Images
Figure CN122409618A_ABST