单金纳米棒远场散射光谱技术

发布时间：2018-04-24 08:42

本文选题：单金纳米棒 + 散射光谱　；参考：《光谱学与光谱分析》2016年12期

【摘要】：单金纳米棒(gold nanorod AuNR)的远场光学技术在近几年引起了相当大的关注。由于金纳米棒(AuNRs)独特的局部表面等离子体共振(localized surface plasmon resonance LSPR)特性,金纳米棒颗粒非常适合高度传导定域在表面的化学或物理刺激产生的光信号。根据该课题组的研究经验,对AuNR的光学探测和光谱学方法的原理、应用、进展和纳米系统表现出新奇的光学特性进行了综述。较为全面地介绍了:(1)AuNR散射光谱相关的各类技术,包括:暗场技术,零差和外差技术,光子晶体技术,空间调制和偏振调制技术等;(2)AuNR散射光谱特性,包括:光谱线形函数,线宽,衬底对光谱的影响以及理论和实验光谱的对比等;(3)相关光谱技术近年来的发展。重点研究了基于LSPR的远场光学散射方法。主要是基于AuNR线性的方法,如直接和间接的散射检测方法。注重强调了介质环境(如底物,表面结合的分子或其他纳米材料等)的重要性以及对散射光谱和消光幅度的影响。特别注重的是AuNR表面及形貌的定量方法及其相关性研究,无论是直接的还是间接的散射的方法,大都给出实验与理论模型精确的比较。这些实验和理论工具的结合可以详细解释单金纳米棒的光学性质。
[Abstract]:The far field optical technique of single gold nanorods nanorod AuNRs has attracted considerable attention in recent years. Due to the unique local surface plasmon resonance (surface plasmon resonance Lspr) characteristic of au nanorods, gold nanorods are very suitable for highly conducting optical signals generated by localized chemical or physical stimuli on the surface. Based on the research experience of this research group, the principle, application, progress and novel optical properties of AuNR optical detection and spectroscopy are reviewed. In this paper, various techniques related to the scattering spectrum of AuNR, including dark field technique, zero-difference and heterodyne technique, photonic crystal technique, spatial modulation and polarization modulation technique, are introduced in detail, including spectral lineal function, linewidth, etc. The influence of substrate on Spectra and the comparison of theoretical and Experimental Spectra etc.) the development of related spectral technology in recent years. The far-field optical scattering method based on LSPR is mainly studied. Mainly based on AuNR linear methods, such as direct and indirect scattering detection methods. Emphasis is placed on the importance of dielectric environments (such as substrates, surface-bound molecules or other nanomaterials, etc.) and their effects on scattering spectra and extinction amplitude. Special attention is paid to the quantitative method of surface and morphology of AuNR and its correlation. Both direct and indirect scattering methods are used to compare the experimental and theoretical models accurately. The combination of these experimental and theoretical tools can explain in detail the optical properties of single gold nanorods.
【作者单位】：沈阳工业大学理学院;
【基金】：国家自然科学基金项目(51075281) 沈阳工业大学博士后启动基金项目(521101302)资助
【分类号】：TB383.1;O433

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