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논문 기본 정보

자료유형
학술저널
저자정보
Ying He (Ewha Womans University) Sung Min Park (Ewha Womans University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.17 No.6
발행연도
2017.12
수록면
886 - 892 (7page)
DOI
10.5573/JSTS.2017.17.6.886

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초록· 키워드

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A portable fluorometer has been developed for cyanobacteria detection by exploiting commercially available low-cost photodiodes. Particularly, the front-end detection circuit was integrated on-chip by using a 0.11-μm CMOS process to realize the high transimpedance gain of 99.7 dBΩ with low current consumption of 1.4 mA from a single 1.5-V supply, hence providing a low-power solution with small form-factor in the applications of portable cyanobacteria detection. For measuring fluorescence intensity of cyanobacteria, two quantum dots of QD<SUB>565</SUB> and QD<SUB>655</SUB> were employed into a NanoGene assay for mcyD gene(synthetase of toxic microcystin) detection of Microcystis aeruginosa, resulting in two different readout voltages. Various operational parameters (e.g. distance, angle between laser emission and vial sample, etc) were investigated for the proposed fluorometer. Measurements demonstrated that the mcyD gene hybridized with QD<SUB>565</SUB> and QD<SUB>655</SUB> was quantitatively detected, i.e. the normalized output voltage (QD<SUB>655</SUB>/QD<SUB>565</SUB>) was linearly proportional to the mcyD gene copy numbers (y = 0.25 log x – 0.25). Besides, the wireless transfer of the quantitative data was performed via Bluetooth.

목차

Abstract
I. INTRODUCTION
II. MATERIALS AND METHODS
III. PROPOSED INTEGRATED CC-TIA
IV. PORTABLE FLUOROMETER
V. CONCLUSIONS
REFERENCES

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