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© 2016 IEEE. Biosensors are very important tools in biomedical and clinical research. They are becoming a part of day-to-day healthcare. With the development of technology some nanomaterials such as carbon nanomaterial, which have special building blocks and come with some unique electronic and optical properties, have been implemented into biosensor devices. Carbon nanotubes (CNTs) are carbon nanomaterial comprising rolled-up cylinders of carbon monolayers. The properties of the sensing matrix materials can be modified in such a way that relevant molecules can be detected with high sensitivity and selectivity. In this paper we report experimental results on a CNT/polymer nanocomposite and a luminescence quenching based optical oxygen sensor. The results show that the time response of the sensors can be optimized by adding CNTs into sensing matrix.

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