학술논문
Microneedle array sensors based on carbon nanoparticle composites: interfacial chemistry and electroanalytical properties.
Document Type
Article
Author
Source
Subject
*CARBON composites
*SENSOR arrays
*X-ray photoelectron spectroscopy
*CHEMISTRY
*CONTACT angle
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Language
ISSN
0022-2461
Abstract
Conductive microneedle patches consisting of carbon nanoparticles embedded in a polystyrene matrix have been prepared using micro-moulding techniques. The interfacial properties of the structures before and after electrochemical etching have been characterised using X-ray photoelectron spectroscopy and contact angle. Anodisation of the needles leads to a significant increase in oxygen functionality and is shown to dramatically improve the electroanalytical capabilities of the microneedle array. The detection of uric acid in horse blood was used as a model system through which to assess the performance of the system. The composite approach is shown to lead to viable carbon-based sensors and can offer a rapid prototype option for the development of tailored microneedle systems. [ABSTRACT FROM AUTHOR]