金纳米颗粒与光子晶体复合的表面增强拉曼散射基底：拉曼光谱的可操作性与均匀性

Hybrid surface-enhanced Raman scattering substrate from gold nanoparticle and photonic crystal: maneuverability and uniformity of Raman spectra.

作者信息

Wu Cheng Yi, Huang Chia Chi, Jhang Jia Sin, Liu An Chi, Chiang Chun-Chen, Hsieh Ming-Lung, Huang Ping-Ji, Tuyen Le Dac, Minh Le Quoc, Yang Tzyy Schiuan, Chau Lai-Kwan, Kan Hung-Chih, Hsu Chia Chen

机构信息

Department of Physics, National Chung Cheng University, Ming Hsiung, Chia Yi, Taiwan.

出版信息

Opt Express. 2009 Nov 23;17(24):21522-9. doi: 10.1364/OE.17.021522.

DOI:10.1364/OE.17.021522

PMID:19997393

Abstract

A novel hybrid surface-enhanced Raman scattering (SERS) substrate based on Au nanoparticles decorated inverse opal (IO) photonic crystal (PhC) is presented. In addition to the enhancement contributed from Au nanoparticles, a desired Raman signal can be selectively further enhanced by appropriately overlapping the center of photonic bandgap of the IO PhC with the wavelength of the Raman signal. Furthermore, the lattice structure of the IO PhC provides excellent control of the distribution of Au nanoparticles to produce SERS spectra with high uniformity. The new design of SERS substrate provides extra maneuverability for ultra-high sensitivity sensor applications.

摘要

本文提出了一种基于金纳米颗粒修饰反蛋白石（IO）光子晶体（PhC）的新型混合表面增强拉曼散射（SERS）基底。除了金纳米颗粒带来的增强作用外，通过使IO光子晶体的光子带隙中心与拉曼信号波长适当重叠，可以选择性地进一步增强所需的拉曼信号。此外，IO光子晶体的晶格结构对金纳米颗粒的分布提供了出色的控制，从而产生具有高均匀性的SERS光谱。这种新型SERS基底设计为超高灵敏度传感器应用提供了额外的可操作性。