e-space
Manchester Metropolitan University's Research Repository

Screen-printed back-to-back electroanalytical sensors

Metters, JP and Randviir, EP and Banks, CE (2014) Screen-printed back-to-back electroanalytical sensors. ANALYST, 139. ISSN 0003-2654

[img]
Preview

Download (484kB) | Preview

Abstract

We introduce the concept of screen-printed back-to-back electroanalytical sensors where in this facile and generic approach, screenprinted electrodes are printed back-to-back with a common electrical connection to the two working electrodes with the counter and reference electrodes for each connected in the same manner as a normal “traditional” screen-printed sensor would be. This approach utilises the usually redundant back of the screen-printed sensor, converting this “dead-space” into a further electrochemical sensor which results in improvements in the analytical performance. In the use of the back-to-back design, the electrode area is consequently doubled with improvements in the analytical performance observed with the analytical sensitivity (gradient of a plot of peak height/ analytical signal against concentration) doubling and the corresponding limit-of-detection being reduced.We also demonstrate that through intelligent electrode design, a quadruple in the observed analytical sensitivity can also be realised when double microband electrodes are used in the back-to-back configuration as long as they are placed sufficiently apart such that no diffusional interaction occurs. Such work is generic in nature and can be facilely applied to a plethora of screen-printed (and related) sensors utilising the commonly overlooked redundant back of the electrode providing facile improvements in the electroanalytical performance.

Impact and Reach

Statistics

Downloads
Activity Overview
19Downloads
52Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (login required)

Edit Item Edit Item