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- capacitive field-effect sensor (3)
- field-effect sensor (3)
- tobacco mosaic virus (TMV) (3)
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- (Bio)degradation (1)
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- Enzyme coverage (1)
- Enzyme logic gate (1)
- Field effect (1)
- Field-effect biosensor (1)
- Impedance spectroscopy (1)
- Label-free detection (1)
- Layer-by-layer adsorption (1)
- Multianalyte detection (1)
- Penicillin (1)
- Poly(allylamine hydrochloride) (1)
- Poly(d,l-lacticacid) (1)
- Real-time monitoring (1)
- TMV adsorption (1)
- Ta₂O₅ gate (1)
- XOR (1)
- aminooctanethiol (1)
- barium strontium titanate (1)
- bi-enzyme biosensor (1)
- biosensor (1)
- capacitive EIS sensor (1)
- capacitive model (1)
- contactless conductivity sensor (1)
- control gate (1)
- detection of charged macromolecules (1)
- electrolyte-insulator-semiconductor capacitors (1)
- enzymatic (bio)degradation (1)
- enzyme cascade (1)
- enzyme-logic gate (1)
- equivalent circuit (1)
- glucose oxidase (GOx) (1)
- high-k material (1)
- horseradish peroxidase (HRP) (1)
- hydrogen peroxide (1)
- impedance spectroscopy (1)
- in-situ monitoring (1)
- lable-free detection (1)
- multi-functional material (1)
- multianalyte detection (1)
- nanoparticle coverage (1)
- on-chip integrated addressable EISCAP sensors (1)
- penicillinase (1)
- plant virus detection (1)
- poly(d, l-lactic acid) (1)
- polystyrene sulfonate (1)
- turnip vein clearing virus (TVCV) (1)
- urease (1)
The characterization of the degradation kinetics of biodegradable polymers is mandatory with regard to their proper application. In the present work, polymer-modified electrolyte–insulator–semiconductor (PMEIS) field-effect sensors have been applied for in-situ monitoring of the pH-dependent degradation kinetics of the commercially available biopolymer poly(d,l-lactic acid) (PDLLA) in buffer solutions from pH 3 to pH 13. PDLLA films of 500 nm thickness were deposited on the surface of an Al–p-Si–SiO2–Ta2O5 structure from a polymer solution by means of spin-coating method. The PMEIS sensor is, in principle, capable to detect any changes in bulk, surface and interface properties of the polymer induced by degradation processes. A faster degradation has been observed for PDLLA films exposed to alkaline solutions (pH 9, pH 11 and pH 13).