期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 96, 期 3, 页码 554-559出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(03)00638-5
关键词
surface plasmon resonance; differential phase measurement; SPR phase imaging
An optical differential phase surface plasmon resonance (SPR) technique capable of performing detection and visualization of refractive index in the order of 10(-5) is presented. The system makes use of the s-polarization as the reference beam to interfere with the p-polarization, of which the phase has close relationship with the change of surface plasmon resonance conditions at the sensor surface. The extraction of phase information is achieved by performing fringe analysis on the interference pattern captured by an image digitizer. This technique is shown here to be sensitive enough to image salt-water mixture with a level of 0.1 wt.%. Given that we have now demonstrated the possibility of SPR phase extraction from digitized images, direct application of this technique in two-dimensional biosensor arrays with high measurement throughput is also suggested. (C) 2003 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据