Preliminary Study on the Fabrication of Multi-Layer Screen-Printed Electrode for Biosensor Application

Abstract

A biosensor is an analytical device that combines certain biological and physical elements. Several types of transducers are used for physical elements, such as optical, electrochemical, thermic, or gravimetric. Nowadays, electrochemical transducers have become widely used for the application of biomedical sensors. Electrochemical measurement devices called screen-printed electrodes (SPEs) are created by printing several types of ink on a ceramic or plastic substrate. SPEs enable speedy in-situ examination with high repeatability, sensitivity, and accuracy. In this study, SPEs were fabricated using a personalized CNC machine with carbon conductive ink as the electrode and polyethylene terephthalate (PET) as the substrate. The mask, stencil, and screen-printing dimensions were measured using a DinoLite microscope. SPEs characterization was performed using Scanning Electron Microscopy (SEM) to observe the surface morphology. This simple approach method shows a promising result that SPEs can be produced up to 5 screen printing layers with the ability to flow the electrical current under a resistance of 350.4 KΩ