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Plasmonic platforms of self-assembled silver nanostructures in application to fluorescence
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2010-09-01 , DOI: 10.1117/1.3500463
Rafal Luchowski 1 , Nils Calander , Tanya Shtoyko , Elisa Apicella , Julian Borejdo , Zygmunt Gryczynski , Ignacy Gryczynski
Affiliation  

Fluorescence intensity changes were investigated theoretically and experimentally using self-assembled colloidal structures on silver semitransparent mirrors. Using a simplified quasi-static model and finite element method, we demonstrate that near-field interactions of metallic nanostructures with a continuous metallic surface create conditions that produce enormously enhanced surface plasmon resonances. The results were used to explain the observed enhancements and determine the optimal conditions for the experiment. The theoretical parts of the studies are supported with reports on detailed emission intensity changes which provided multiple fluorescence hot spots with 2-3 orders of enhancements. We study two kinds of the fluorophores: dye molecules and fluorescent nanospheres characterized with similar spectral emission regions. Using a lifetime-resolved fluorescence/reflection confocal microscopy technique, we find that the largest rate for enhancement (~1000-fold) comes from localized areas of silver nanostructures.

中文翻译:

自组装银纳米结构的等离子体平台在荧光中的应用

使用银半透明镜上的自组装胶体结构从理论上和实验上研究了荧光强度的变化。使用简化的准静态模型和有限元方法,我们证明了金属纳米结构与连续金属表面的近场相互作用创造了产生极大增强的表面等离子体共振的条件。结果用于解释观察到的增强并确定实验的最佳条件。研究的理论部分得到了详细发射强度变化报告的支持,这些变化提供了多个荧光热点,增强了 2-3 个数量级。我们研究了两种荧光团:染料分子和具有相似光谱发射区域的荧光纳米球。使用寿命分辨荧光/反射共焦显微镜技术,我们发现最大的增强率(约 1000 倍)来自银纳米结构的局部区域。
更新日期:2010-09-01
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