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Sensors 2014, 14(7), 11416-11426; doi:10.3390/s140711416
Article

Simple and Fast Method for Fabrication of Endoscopic Implantable Sensor Arrays

1,3,* , 1
,
1,2
 and
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Received: 6 May 2014 / Revised: 10 June 2014 / Accepted: 20 June 2014 / Published: 26 June 2014
(This article belongs to the Special Issue Implantable Sensors)
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Abstract

Here we have developed a simple method for the fabrication of disposable implantable all-solid-state ion-selective electrodes (ISE) in an array format without using complex fabrication equipment or clean room facilities. The electrodes were designed in a needle shape instead of planar electrodes for a full contact with the tissue. The needle-shape platform comprises 12 metallic pins which were functionalized with conductive inks and ISE membranes. The modified microelectrodes were characterized with cyclic voltammetry, scanning electron microscope (SEM), and optical interferometry. The surface area and roughness factor of each microelectrode were determined and reproducible values were obtained for all the microelectrodes on the array. In this work, the microelectrodes were modified with membranes for the detection of pH and nitrate ions to prove the reliability of the fabricated sensor array platform adapted to an endoscope.
Keywords: ion-selective electrode (ISE) sensor; pH-nitrate detection; electrochemistry; implantable device; biomedicine ion-selective electrode (ISE) sensor; pH-nitrate detection; electrochemistry; implantable device; biomedicine
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Tahirbegi, I.B.; Alvira, M.; Mir, M.; Samitier, J. Simple and Fast Method for Fabrication of Endoscopic Implantable Sensor Arrays. Sensors 2014, 14, 11416-11426.

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