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In the paper the results of development of measurement instrument dedicated to electrochemical biosensing are presented. The document covers the most important aspects of the hardware and software solutions used with presented device. Sample measurement results using Cyclic Voltammetry (CV) method are also shown, in comparison with similar measurements made with commercially available, professional...
We describe an integrated biosensor capable of sensing multiple molecular targets using both cyclic voltammetry (CV) and chronoamperometry (CA). In particular, we present our custom IC to realize voltage control and current readout of the biosensors. A mixed-signal circuit block generates sub-Hertz triangular waveform for the biosensors by means of a direct-digital-synthesizer to control CV. A current...
Standard pharmaceutical processes involving cell lines are generally monitored by expensive and time consuming laboratory testing by direct sampling of the culture media to evaluate cell state and quality. Conversely to standard off-line measurements, in this work we propose a novel miniaturized biosensor array to detect glucose and lactate in-situ and on-line. The electrochemical biosensors are accomplished...
A biosensor for the detection of ascorbic acid is developed by preparing a carbon paste electrode (CPE) electrochemically deposited with Prussian blue (PB) and DNA adsorbed on its surface. Cyclic voltammetry (CV) was used to study the electrochemical properties of the biosensor. The successful electro-deposition of PB was confirmed using Raman Spectroscopy. From the results it was concluded that PB...
A silver electrode modified by Ag2O nanoparticles was prepared and its application to the electrochemical determination of glucose was studied. Ag2O nanoparticles were prepared by reduction of AgNO3 with Na2O2. They can be efficiently immobilized on the surface of a silver electrode. It showed that the Ag2O nanoparticles could clearly enhance the electron transfer process between glucose and electrode...
Gold nanoparticles (NPs) of 10-50 nm in diameter were synthesized on nitrogen incorporated diamond-like carbon (DLC:N) thin film electrode by electrodeposition. The deposition process of Au was investigated by cyclic voltammetry and chronoamperometry. The morphology of Au NPs was characterized by scanned electron microscopy. The potentiostatic current-time transients showed a progressive nucleation...
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