Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA.
How to fabricate scale low-cost microfluidic device for detection of biomarkers owns a great requirement. Herein, it is for the first time reported that a new microfluidic device based on bonding polydimethylsiloxane microfluidic channels onto the substrate of a screen-printed electrode with coating glass solution was fabricated for electrochemical sensing of prostate-specific antigen (PSA). Compared to traditional microfabrication processes, this method is simple, fast, low cost, and also suitable for mass production. The prepared screen-printed electrode-based microfluidic device (CASPE-MFD) was used for the detection of the PSA in human serum. The prepared CASPE-MFD had a detection limit of 0.84 pg/mL (25.8 fM) and a good linearity with PSA concentration ranging from 0.001 to 10 ng/mL, which showed a great promise platform toward the development of miniaturized, low-cost electrochemical microfluidic device for use in human health, environmental monitoring, and other applications.
['Chen|Shouhui|S|', 'Wang|Zhihua|Z|', 'Cui|Xinyuan|X|', 'Jiang|Linlei|L|', 'Zhi|Yuee|Y|', 'Ding|Xianting|X|', 'Nie|Zhihong|Z|', 'Zhou|Pei|P|', 'Cui|Daxiang|D|http://orcid.org/0000-0003-4513-905X']
Microfluidic devices Screen-printed electrode PSA Detection Electrochemical sensor