Simple fabricating PCB-based inter digital capacitor for glucose biosensor

This paper presents the simple fabrication of interdigital capacitor (IDC) using print circuit board (PCB) for glucose biosensor. PCB type FR04 laminated with Cu as electrode was used as sensor base. The IDC pattern of sensor was designed by computer aided design program and printed with a laser pri...

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Bibliographic Details
Main Authors: Jamaluddin, Anif, Taufik, Usman, Iriani, Yofentina, Budiawanti, Sri, Suyitno
Format: Conference Proceeding
Language:English
Subjects:
Biosensors
CAD
Capacitance
Capacitors
Circuit boards
Computer aided design
Ferric chloride
Glucose
Iron chlorides
Laminating
Printed circuits
Sensors
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Summary:This paper presents the simple fabrication of interdigital capacitor (IDC) using print circuit board (PCB) for glucose biosensor. PCB type FR04 laminated with Cu as electrode was used as sensor base. The IDC pattern of sensor was designed by computer aided design program and printed with a laser printer on plastic polymers. Then, the IDC pattern was transferred into PCB by a laminating machine. The etching process of PCB was done by immersing in ferric chloride liquid to form Cu pattern. There were five patterns of sensors including 5, 10, 15, 20 and 25 patterns. The capacitance value of PCB was measured with RCL meter when IDC biosensor was put in air, aquades, and glucose liquid with various moles of glucose (0.02, 0.04, 0.06, 0.08, 0.1M). In air medium, the increase of pattern number of IDC sensor (from 5 to 25) caused the sensor capacitance rose from 22 pf to 46 pf. In addition, the capacitance of sensor was dramatically increased until 0.36 µf while IDC sensor with 25 patterns was put in aquades medium. In liquid glucose medium, the capacitance of IDC biosensor with 25 patterns increased until 0.58 µf on 0.1 M glucose liquid.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4968345