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The effect of γ-sterilization on the pH-ChemFET behaviour

✍ Scribed by I. Humenyuk; P. Temple-Boyer; G. Sarrabayrouse

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
624 KB
Volume
147
Category
Article
ISSN
0924-4247

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✦ Synopsis

One of the key requirements biomedical and pharmaceutical sensors have to satisfy is their ability to withstand sterilization cycle. In this paper, the influence of ␥-sterilization on the electrical and electrochemical characterizations of pH-sensitive chemical field effect transistors (pH-ChemFET) is examined before and after ␥-irradiation. It is shown that ␥-irradiation is suitable for pH-ChemFETs sterilization in the field of in-vitro analysis and more precisely for single-use bioreactors.

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## Abstract Potentiodynamic measurements on mechanically polished titanium electrodes were performed in different solutions in the pH range 0.55–12. Two anodic peaks and one small cathodic peak were observed. Comparison with thermodynamic data revealed the possibility of formation of Ti~2~O~3~ or T