高精度表面等离子体共振传感中的信号处理方法

表面等离子体共振传感技术是一种简单可行并广为应用的光学高精度表面检测方法,能够对折射率的变化(10-8)进行检测。若要实现高灵敏度、高稳定性、高可靠性的检测,除了光电系统硬件外,信号的数据处理方法也是关键技术之一。运用合适的数据处理方法可有效地降低实验中的随机噪声以及系统不理想性所带来的影响,可大大提高测量精度、准确性和测量范围。从信号处理方法的角度,根据国内外近年来的研究成果,利用表面等离子体共振实现了在微量检测和薄膜分析时进行数据处理的算法。

Data analysis techniques for highly sensitive surface plasmon resonance sensoring

Surface Plasmon Resonance(SPR) is a simple and widely used in highly sensitive surface optical sensing technique,and so far it can detect refractive index changes as small as 10-8(RIU).In order to realize such high sensitivity,stability and reliability,besides the hardware of the electro-optic system, the appropriate data analysis algorithm is essential.The data analysis techniques can significantly reduce the influence introduced by random noise or system imperfection,and the precision,accuracy and operating range are improved.Based on the recent research progress in the SPR signal analysis techniques,the procedures and algorithms of data analysis in the SPR applications for minute content detection and film analysis are presented.