Fast surface plasmon resonance imaging sensor using Radon transform
Fast surface plasmon resonance imaging sensor using Radon transform
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DOI：
10.1016/j.snb.2010.12.012
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发表时间：
2011-07-05
影响因子：
8.4
通讯作者：
Abdulhalim, I.
中科院分区：
文献类型：
--
作者：
Karabchevsky, A.;Karabchevsky, S.;Abdulhalim, I.
提出了一种表面等离子体共振（SPR）成像技术，该技术使用给定频率的发散激光束以Kretschmann-Raether结构照射传感器的整个表面。在明亮的背景上观察到一个暗强度线的图案，对应于SPR在一个角度范围内的倾角，这取决于邻近分析物的折射率，并由一个二维CCD探测器监测。提出了一种新的基于Radon变换的SPR线形检测算法，该算法对激光散斑噪声不敏感，提高了检测精度。(C) 2010 Elsevier B.V.版权所有
Surface plasmon resonance (SPR) imaging technique is proposed in which a diverging laser beam at given frequency was used to illuminate the entire sensor surface in Kretschmann-Raether configuration. A pattern of dark intensity line on bright background is observed corresponding to the SPR dip at an angular range depending on the refractive index of the adjacent analyte and monitored by a two-dimensional CCD detector. A novel Radon transform based detection algorithm for the SPR line pattern is proposed, which is non sensitive to the laser speckle noise and improves the accuracy. (C) 2010 Elsevier B.V. All rights reserved.