Line-monitoring, hyperspectral fluorescence setup for simultaneous multi-analyte biosensing.

Line-monitoring, hyperspectral fluorescence setup for simultaneous multi-analyte biosensing.
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用于同步多分析物生物传感的线路监测、高光谱荧光设置

DOI:
10.3390/s111110038
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发表时间:
2011
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
He Y
He Y
中科院分区:
其他
文献类型:
--
作者:
Liu Z;Shi H;Liu L;Deng S;Ji Y;Ma S;Ma H;He Y

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传统的荧光扫描仪使用多个滤光片来区分不同的荧光标记,并且由于这种基于滤光片的机制而出现问题。在这项工作中,我们提出了一种在线监测的高光谱荧光技术,该技术是为多通道微流控系统的应用而设计和优化的。与只记录荧光强度的基于滤光片的机制不同,高光谱技术记录了样本平面上每个点的完整光谱。然后将多变量数据利用应用于光谱分析,以确定不同荧光标记的比例并消除不需要的伪影。该传感器设计用于同时监控多个流体通道,为多分析物生物传感提供了可能性。该传感器的检测灵敏度约为0.81Fluors/μ~2,具有良好的均匀度。最后,通过检测短链寡核苷酸的模型实验,验证了该高光谱荧光生物传感器在生物医学上的应用。
Conventional fluorescence scanners utilize multiple filters to distinguish different fluorescent labels, and problems arise because of this filter-based mechanism. In this work we propose a line-monitoring, hyperspectral fluorescence technique which is designed and optimized for applications in multi-channel microfluidic systems. In contrast to the filter-based mechanism, which only records fluorescent intensities, the hyperspectral technique records the full spectrum for every point on the sample plane. Multivariate data exploitation is then applied to spectra analysis to determine ratios of different fluorescent labels and eliminate unwanted artifacts. This sensor is designed to monitor multiple fluidic channels simultaneously, providing the potential for multi-analyte biosensing. The detection sensitivity is approximately 0.81 fluors/μm2, and this sensor is proved to act with a good homogeneity. Finally, a model experiment of detecting short oligonucleotides has demonstrated the biomedical application of this hyperspectral fluorescence biosensor.
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