Abstract
In this study, the light addressable potentiometric sensors (LAPS) with , and structures were fabricated. The penicillinsae was immobilized on the devices to hydrolyze the penicillin using self-assembled monolayer (SAM) method. Then response characteristics according to the penicillin concentrations were measured and compared. The measuring system was simplified by using LabVIEW. The pH response characteristics of fabricated devices are 56 mV/pH ( sensing membrane) and 61 mV/pH ( sensing membrane). The sensitivity of sensor by enzyme reaction result of the enzyme reaction were 60 mV/decade and 74 mV/decade for and structure, respectively, in the range of of the penicillin concentration.
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