Abstract
The research progress in the centrifugal microfluidic platform provides great opportunities for simple and effective analytical measurements in a variety of areas including biomedical engineering. In this study, we propose an optical reader that can measure the transmittance in a very sensitive and rapid manner on a hybrid paper-polymer centrifugal disc platform. This device enables real-time monitoring of multiple samples by measuring the absorbance of the light transmitted through the paper integrated on the disc between the light emitting diode (LED) and the photodiode (PD) regardless of the ambient light condition. To confirm its efficiency, we analyzed one of the blood's important indicators, glucose in a successful manner within 10 s without any additional complex image analysis. In addition, we discussed the results by comparing with the reflectance-based methods and with those of the previously reported studies by introducing a figure of merit to evaluate the performance of the assay.
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