The Frequency Response and Optical Detection Characteristics of a Series Photodetector Frequency Circuit System Matched With Polydimethylsiloxance (PDMS)

被引:0
作者
Hsu, Y. M. [1 ,2 ]
Chang, C. C. [1 ]
机构
[1] Natl Taiwan Ocean Univ, Dept Elect Engn, Keelung 20224, Taiwan
[2] Lan Yang Inst Technol, Dept Innovat Digital Living, Ilan 26141, Taiwan
关键词
Series photodetector frequency circuit system; laser; polydimethylsiloxance (PDMS); fluorescence dye concentration; microfluidic chip; DNA HYBRIDIZATION;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study elucidates the frequency response and optical detection characteristics of series photodetector frequency circuit system matched with polydimethylsiloxance (PDMS) for detection of fluorescence dye concentration. While the same fluorescence intensity irradiated on the photodetector, the series photodetector frequency circuit system with higher responsivity of photodetector had higher frequency sensitivity. In accordance with Cy5 fluorescence dye concentrations and frequency responses, the detection limit of fluorescence dye concentration 2 pmol/l can be measured by 100 MHz sensor system matched with PDMS. The results also showed that the frequency shift of the sensor system matched with photodetector PT was linearly related to the logarithm of fluorescence dye concentration from 2 to 20 mu mol/l. Moreover, the frequency sensor system had a potential application in the detection of deoxyribonucleic acid (DNA) hybridization with PDMS microfluidic chip.
引用
收藏
页码:133 / 149
页数:17
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