Abstract
An antigen-antibody sensor consisting of a silicon-based chip contains a mixture of poly[ethylene glycol] (PEG)-grafted single-walled carbon nanotubes (PEG-SWCNTs) and SWCNTs modified with an antigen by using plasma ion irradiation (plasma activation) method , was developed. According to X-ray photoelectron spectroscopy (XPS) analysis, peaks which correspond to CO and COOH radicals increased in impedance due to BSA/anti-BSA binding. The results of this study indicate that this antigen-antibody sensor reacts with a quick response time.
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