Iranians produced metal oxide-resistant nanosensors and investigated their electrical characteristics by using thin layer nanostructures and nanopowders by Iranian researchers from
The nanosensors can be used for the prompt detection of fungi,
The aim of the research was to develop a system by using the electronic properties of some types of metal oxides to detect gases emitted from different materials. The system will be used for the speedy detection of the grown fungi in foodstuff.
SnO2, ZnO and CuO nanolayers were firstly deposited in this research through spray pyrolysis method. Then, the nanopowders of each materials were synthesized through various methods, including sol-gel and co-precipitation.
In the next stage, Aspergillus niger fungi was placed in contact with nanolayers and nanopowders. Finally, a system was designed and electrical resistances of the nanosystems were measured in the presence of gases emitted by the fungi.
The researchers also studied effective parameters such as time, temperature and other physical conditions on the changes in electrical resistance of the sample nanosensor.
The research may have applications in food packaging, including cans, breads that are packed in the place of production, other places that produce foodstuff, storerooms where initial livestock foodstuff are kept and other places where this type of fungi or other microscopic mold may grow.
Results of the research have been published in details in Scientia Iranica, vol. 20, issue 3, pp. 1,055-1,058.
Iranians Produce Nanobiosensor for Detecting Fungi
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