Enhancement of Fluorescent Labeling via a Composited Thin Film

Enhancement of Fluorescent Labeling via a Composited Thin Film
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通过复合薄膜增强荧光标记

DOI:
10.1155/2014/921489
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发表时间:
2014-03
影响因子:
3.3
通讯作者:
Zhang Yaoju
Zhang Yaoju
中科院分区:
工程技术4区
文献类型:
--
作者:
Suyama Taikei;Ji Xiaowei;Zhang Yaoju

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荧光标记是细胞生物学研究中最常用的成像技术。当涉及对大量细胞的统计调查时,需要低放大率的实验研究以获得可靠的统计群体,以及高对比度以实现对细胞扰动性质的准确诊断。由于低放大倍数的显微镜物镜通常产生低的收集效率,这样的研究受到荧光信号弱的限制。为了克服这一技术不足,Le Moal等人提出了一种基于金属涂层基底的方法,该方法增强了荧光过程并提高了荧光显微镜观察中的收集效率,并且可以直接与普通显微镜装置一起使用。本文以Ag-Si_3 N_4-Ag多层膜为研究对象,数值分析了在基底上涂覆的复合膜上放置荧光团的光学行为。结果表明,采用Ag-Si_3 N_4-Ag复合薄膜可以显著增强荧光成像。
Fluorescent labeling is the prevailing imaging technique in cell biological research. When statistical investigations on a large number of cells are involved, experimental study is required for both low magnification to get a reliable statistical population and high contrast to achieve accurate diagnosis on the nature of the cells’ perturbation. As microscope objectives of low magnification generally yield low collection efficiency, such studies are limited by the fluorescence signal weakness. To overcome this technological insufficiency, Le Moal et al. proposed a method based on metal-coated substrates that enhanced the fluorescence process and improved collection efficiency in fluorescence microscope observation and that could be directly used with a common microscope setup. In this paper, we use an Ag-Si3N4-Ag multilayer film coated on the substrate and numerically analyse the optical behavior of a fluorophore which was placed above the composited film coated on the substrate. The results shows that by using an Ag-Si3N4-Ag composited film the fluorescence imaging can be enhanced remarkably.
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