We present a new method for measuring low concentrations and simultaneously small volumes of fluorescent molecules based on the use of the Ebbesen effect of the extraordinary transmission (EOT) of light through an array of nano-holes. In the method the EOT effect is realized at the fluorescence wavelength of the detected molecules with a low transmission of light at the absorption wavelength. The approach allows realizing high level of the sensor sensitivity due to suppression of the inevitable parasitic luminescence of the sensor substrate. The method was demonstrated by detecting an ultra low concentration (at a level of 20 pg/ml (3 p.p.t.)) and an ultra-small volume (about 5 μl) of Cy-5 fluorescent markers in a dimethyl sulfoxide solution.
Performance improvement of refractometric sensors through hybrid plasmonic-Fano resonances
在本文中，我们提出了一个等离子体折射传感器，工作在正常的入射，允许其集成在光纤尖端。该传感器的材料和几何形状利用了由折射率的高对比度亚波长介质光栅给出的大散射截面。由于表面等离子体共振和光栅响应之间的干涉，我们的设计产生了混合等离子体-Fano共振。我们优化传感器的品质函数，结合了质量参数的共振和等离子体传播的相互作用体积的场增强。我们的器件显示出高灵敏度（1000 nm/RIU）和高品质因数（775 RIU $^{-1}$）。性能下降是可以忽略不计的，通过一个宽的动态范围高达0.7 RIU。与类似的等离子体传感器相比，这些定量参数表现出色。
Plasmonic Particle Integration into Near-Infrared Photodetectors and Photoactivated Gas Sensors: Towards Sustainable Next-Generation Ubiquitous Sensing
Metal-coated microsphere monolayers as surface plasmon resonance sensors operating in both transmission and reflection modes
National Institute for Research and Development of Isotopic and Molecular Technologies（同位素和分子技术研究发展中心）；Institute for Interdisciplinary Research in Bio-Nano-Sciences, Babes-Bolyai University（巴比什-博约伊大学生物纳米科学交叉研究所）
