Plasmonic materials for surface-enhanced sensing and spectroscopy
Plasmonic materials for surface-enhanced sensing and spectroscopy
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DOI：
10.1557/mrs2005.100
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发表时间：
2005-05-01
期刊：
影响因子：
5
通讯作者：
Zou, SL
中科院分区：
文献类型：
--
作者：
Haes, AJ;Haynes, CL;Zou, SL
银和金纳米颗粒中的局部表面等离子体共振（LSPR）激发产生强消光和散射光谱，近年来其已用于重要的传感和光谱应用。本文介绍了利用这一概念的等离子体材料的制造，表征和计算电动力学。提出了这些等离子体材料的两个应用：（1）基于LSPR波长位移光谱的超灵敏纳米级光学生物传感器的开发和（2）等离子体采样和波长扫描表面增强拉曼激发光谱（SERES）的使用，以提供对电磁场增强机制的新见解。
Localized surface plasmon resonance (LSPR) excitation in silver and gold nanoparticles produces strong extinction and scattering spectra that in recent years have been used for important sensing and spectroscopy applications. This article describes the fabrication, characterization, and computational electrodynamics of plasmonic materials that take advantage of this concept. Two applications of these plasmonic materials are presented: (1) the development of an ultrasensitive nanoscale optical biosensor based on LSPR wavelength-shift spectroscopy and (2) the use of plasmon-sampled and wavelength-scanned surface-enhanced Raman excitation spectroscopy (SERES) to provide new insight into the electromagnetic-field enhancement mechanism.