Angelini Margherita, Manobianco Eliana, Pellacani Paola, Floris Francesco, Marabelli Franco
Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy.
Plasmore S.r.l, Via Vittorio Emanuele II 4, 27100 Pavia, Italy.
Materials (Basel). 2023 Feb 2;16(3):1289. doi: 10.3390/ma16031289.
Plasmonic gratings are attracting huge interest in the context of realizing sensors based on surface-enhanced fluorescence. The grating features control the plasmonic modes and consequently have a strong effect on the fluorescence response. Within this framework, we focused on the use of a buffer solution flowing across the grating active surface to mimic a real measurement. The refractive index of the surrounding medium is therefore altered, with a consequent modification of the resonance conditions. The result is a shift in the spectral features of the fluorescence emission accompanied by a reshaping of the fluorescence emission in terms of spectral weight and direction.
在基于表面增强荧光实现传感器的背景下，等离子体光栅正引起人们极大的兴趣。光栅特性控制着等离子体模式，因此对荧光响应有很强的影响。在此框架内，我们专注于使用流经光栅活性表面的缓冲溶液来模拟实际测量。周围介质的折射率因此发生变化，从而改变了共振条件。结果是荧光发射的光谱特征发生偏移，同时在光谱权重和方向方面荧光发射的形状也发生重塑。
