DEVICE FOR MEASURING PROTEINS USING BIOSENSOR

摘要

The present invention relates to a sensor for measuring proteins, which has an improved measurement speed compared with conventional impedance measurement methods, and a device for measuring proteins using a biosensor capable of quickly and accurately calculating impedance generated by a selective bond with proteins by performing a Fourier transform for current signals, wherein the current signals are obtained by applying electric potential signals of a delta function waveform. The device for measuring proteins using a biosensor according to the present invention comprises a sample injection unit for receiving a sample, a biosensor comprising a measurement unit, a waveform generator, and a data processing unit. The measurement unit comprises a working electrode and a reference electrode between which a potential difference is created, wherein the working electrode is coated with a receptor layer for a selective bond with specific proteins included in the received sample. The waveform generator applies electric potential signals of a delta function waveform to the working electrode and reference electrode. The data processing unit measures impedance of the working electrode by performing a Fourier transform for currents obtained through response to the delta function waveform. With the device for measuring proteins using a biosensor according to the present invention, measurement time is shortened and the concentration of proteins can be accurately measured by removing the inf