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- actuator-sensor system (1)
- capacitive field-effect sensor (1)
- control gate (1)
- enzymatic biosensor (1)
- enzyme kinetics (1)
- equivalent circuit (1)
- light-addressable electrode (1)
- light-addressable potentiometric sensor (1)
- microfluidics (1)
- multianalyte detection (1)
- on-chip integrated addressable EISCAP sensors (1)
- penicillin (1)
- penicillinase (1)
- photoelectrochemistry (1)
- titanium dioxide photoanode (1)
Photoelectrochemical (PEC) biosensors are a rather novel type of biosensors thatutilizelighttoprovideinformationaboutthecompositionofananalyte,enablinglight-controlled multi-analyte measurements. For enzymatic PEC biosensors,amperometric detection principles are already known in the literature. In con-trast, there is only a little information on H+-ion sensitive PEC biosensors. Inthis work, we demonstrate the detection of H+ions emerged by H+-generatingenzymes, exemplarily demonstrated with penicillinase as a model enzyme on atitanium dioxide photoanode. First, we describe the pH sensitivity of the sensorand study possible photoelectrocatalytic reactions with penicillin. Second, weshow the enzymatic PEC detection of penicillin.