FREQUENCY-RESPONSE OF THE GLUCOSE SENSOR-BASED ON IMMOBILIZED GLUCOSE-OXIDASE MEMBRANE

Frequency response of the glucose sensor based on the immobilized gluc ose oxidase membrane was investigated experimentally by giving the sin usoidal change of glucose concentration to the glucose sensor and obse rving its output signal. Observed values of gains and phase lags of th e frequency response of the glucose sensor followed the frequency resp onse model of the first-order with dead time; The time constant and al so the dead time were estimated and found to decrease as the amount of enzyme immobilized in the membrane increased and the thickness of the membrane decreased.