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The process for obtaining polypyrrole‐2‐carboxylic acid (PPY‐2‐COOH) films in acetonitrile was investigated using cyclic voltammetry, electrochemical quartz crystal microgravimetry (EQCM), and infrared spectroscopy (FTIR). Different potential ranges were applied during cyclic voltammetry experiments with the aim of obtaining films without and with the presence of controlled amounts of water added...
Electrolyte-gate amorphous silicon thin-film transistors (EG-TFT) are used for pH and label-free sensing of biological molecules. In top-gate EG-TFTs, the metal gate is replaced by an electrolyte solution, in which a biasing Pt electrode is immersed. It is possible to switch the TFT on by increasing the voltage of the Pt electrode above a threshold value (V T ). EG-TFTs show a decrease in...
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