WU Yi-chuan, YAO Man-wen, FANG Xiang-yi. Application of SPRI technology in detecting of chemical residual in fingerprint[J]. 2015, 34(6): 37-38+42. DOI: 10.13873/J.1000-9787(2015)06-0037-02.
应用SPRI技术检测指纹上的化学品残留
摘要
介绍了表面等离子体共振成像(SPRI)的原理
应用自行搭建的SPRI系统采集指纹图像
并分析其中的化学物残留。在实验中
测量了粘有Ti O2颗粒的指纹和正常状态下的指纹的SPR吸收光谱
并进行比较分析。实验结果表明:指纹图像有较高的分辨率和对比度;通过对指纹图像进行SPR分析
获得其SPR图谱
能显著观察到其共振波长的变化
从而能实现对残留化学品的检测。
Abstract
The principles of surface plasmon resonance imaging( SPRI) are introduced
and a home-made SPRI system is utilized to acquire image of fingerprint and analyze chemical residual in fingerprint. In this study
a fingerprint containing Ti O2 residual and a fingerprint in normal state are measured for comparison. Experimental results demonstrate that this SPRI technology improves resolution and contrast of the fingerprint image; by SPR analysis on fingerprint image
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