荧光
材料科学
灵敏度(控制系统)
光学
波长
光电子学
航程(航空)
物理
电子工程
工程类
复合材料
作者
Lu Ren,Zhihui Chen,Guang Feng,Xiaowei Wang,Yibiao Yang,Fengrui Sun,Yichao Liu
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-05-19
卷期号:61 (15): 4571-4571
被引量:1
摘要
Ratiometric fluorescent sensors are widely used in biological sensing and immunoassays due to their high sensitivity detection of analytes. The high-ratio value of fluorescence can increase the sensitivity of the fluorescence sensor; in addition, the directional emission can improve the efficiency of light collection and improve the effective use of radiation power. In previous studies, low fluorescence ratios and low directional emission efficiency have restricted the application of ratio fluorescence sensors. Based on the above constraints, this paper proposes an asymmetric hexagonal microcavity structure. By destroying the complete rotational symmetry of the hexagon structure, it achieves high fluorescence ratios and high-efficiency directional emission in the far-field range in the near-infrared wavelength range, which is of significance for the development of high sensitivity fluorescence sensors.
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