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Morphology dependent surface enhanced fluorescence study on silver nanorod arrays fabricated by glancing angle deposition

机译:掠射角沉积制备的银纳米棒阵列的形态学相关表面增强荧光研究

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摘要

The nanorods morphology dependence of surface-enhanced fluorescence (SEF) has been investigated for Rhodamine 6G adsorbed onto silver nanorod arrays. SEF activity of the nanorod arrays was observed to increase significantly for uniform and identical shape nanorods grown at a reduced substrate temperature (140 K). On increasing the nanorod length, a significant rise in SEF enhancement factor up to 32 was observed with respect to the conventional silver film. The observation shows the potential of silver nanorod arrays as high-sensitivity substrates for SEF based studies. The variation of SEF efficiency can be qualitatively explained using lightning-rod and surface plasmon resonance effects.
机译:对于吸附在银纳米棒阵列上的罗丹明6G,已经研究了表面增强荧光(SEF)对纳米棒形态的依赖性。观察到纳米棒阵列的SEF活性对于在降低的基板温度(140 K)下生长的均匀且形状相同的纳米棒而言显着增加。随着纳米棒长度的增加,相对于传统的银膜,观察到SEF增强因子显着提高到32。观察结果表明,银纳米棒阵列作为基于SEF的研究的高灵敏度底物的潜力。 SEF效率的变化可以使用避雷针和表面等离振子共振效应进行定性解释。

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