Synthesis of CuO nanoparticles and fabrication of nanostructural layer biosensors for detecting Aspergillus niger fungi

Copper oxide (cuo) nanoparticles and nanolayers were synthesized by solgel and spraypyrolysis methods, respectively. the structure and morphology of the prepared samples werecharacterized using xrd, sem and tem analysis. aspergillus niger fungi were grown in an appropriatemedium and exposed to the synthesized samples in a closed glass vessel. the boisoning properties ofthe nano systems were investigated by measuring their electrical resistance at regular time intervals anddifferent temperatures. further studies were made on the effects of co2 and humidity on the sensingproperties, using caco3 and silica gel. the considerable changes observed in the electrical resistance of theprepared samples, in the presence of aspergillus niger fungi, support our proposed system as a biosensor.