Abstract
An antigen-antibody sensor consisting of a silicon-based chip contains a mixture of poly [ethylene glycol] (PEG)-grafted carbon nanotubes (PEG-CNTs) and CNTs modified with an antigen by using plasma ion irradiation (plasma activation) method, is developed. According to result of experiments, impedance increased due to antigen/antibody reaction. The results indicate that this antigen-antibody sensor could react until 10 g/ml antigen density.
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