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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/32889

Title: The oscillation condition and optical detection of series photodetector frequency circuit system matched with PMMA
Authors: Yuh Ming Hsu;Chung Cheng Chang
Contributors: NTOU:Department of Electrical Engineering
國立臺灣海洋大學:電機工程學系
Keywords: Series photodetector frequency circuit system;Laser;Fluorescence dye concentration;PMMA
Date: 2012-09
Issue Date: 2012-06-18T07:45:53Z
Publisher: Optik - International Journal for Light and Electron Optics
Abstract: abstract:In this study, the oscillation conditions for series photodetector frequency circuit system were proposed and verified experimentally. The effect of the capacitance Cp and oscillator phase θ on the oscillation ability of series photodetector frequency circuit system was investigated. It revealed that series photodetector frequency circuit system possessed excellent oscillation ability, but the oscillation ability decreased with increasing oscillator phase or decreasing capacitance Cp, even resulted in a cease-to oscillate zone. Moreover, this study elucidated the frequency response and optical detection of series photodetector frequency circuit system matched with PMMA for fluorescence dye concentration. In accordance with Hex fluorescence dye concentrations and frequency responses, the detection limit of fluorescence dye concentration 3.3 pmol/L can be measured by 100 MHz sensor system matched with PMMA. The results also showed that the frequency shift of 100 MHz sensor system matched with PMMA was linearly related to the logarithm of fluorescence dye concentration from 3.3 pmol/L to 33.3 μmol/L.
URI: http://ntour.ntou.edu.tw/handle/987654321/32889
Appears in Collections:[電機工程學系] 期刊論文

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