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Proceedings Paper

Nanopatterning of micro sensor arrays for pH monitoring
Author(s): O. Korostynska; K. Arshak; A. Arshak; E. Gill
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Paper Abstract

There is a need for accurate and instant measurement of pH values in a wide range of applications. The research on miniaturized polymer based pH sensors has recently emerged due to the progress made in polymer materials science. Novel method of manufacturing micro sensors arrays for biomedical applications using BioForce NanoeNablerTM is reported. This nanopatterning system uses a liquid dispensing process via specially designed surface patterning tool (SPT), which is microfabricated cantilever with an integrated passive microfluidic system. During the deposition process, which typically takes less than 100 msec, SPT end touches the surface and a volume of fluid is instantly transferred. The NanoeNablerTM can deliver attoliter to picoliter volumes of liquid with a high degree of spatial accuracy, which resulted in sensor heads measuring 1-2.5 μm to 30 μm. These sensors were developed for biomedical applications, in particular pH monitoring. It is envisaged that findings of this work would form the basis for miniaturised point-of-care diagnostic system. The operation of the sensing elements is based on the properties of polymers, which exhibit a change in their electrical characteristics (such as resistance or capacitance) on exposure to solutions with different concentrations of pH value.

Paper Details

Date Published: 11 May 2009
PDF: 8 pages
Proc. SPIE 7318, Micro- and Nanotechnology Sensors, Systems, and Applications, 731810 (11 May 2009); doi: 10.1117/12.818353
Show Author Affiliations
O. Korostynska, Univ. of Limerick (Ireland)
K. Arshak, Univ. of Limerick (Ireland)
A. Arshak, Univ. of Limerick (Ireland)
E. Gill, Univ. of Limerick (Ireland)

Published in SPIE Proceedings Vol. 7318:
Micro- and Nanotechnology Sensors, Systems, and Applications
Thomas George; M. Saif Islam; Achyut K. Dutta, Editor(s)

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