The main task of the scientists was to achieve accurate classification of volatile organic compounds (VOCs) using the nose, which are dangerous at high concentrations. The authors of the article emphasized cyprus phone number library that the chemical composition of VOCs is an important indicator in various processes, whether it is human breathing, rotting products or industrial production. Moreover, the breath of a healthy and sick person differs in the concentration of VOCs, which means that in the future, by analyzing them, it is possible to obtain a means of rapid but non-invasive diagnostics.
The sensor technology proposed by Norwegian scientists, despite its simplicity, demonstrates performance comparable to and even surpasses that of complex devices. The electronic “nose” is able to distinguish not only gases but also isomers, which existing devices cannot do.
An antenna coated with graphene oxide transmits waves of different frequencies, then captures the reflected signal. The transducer analyzes the resulting “patterns,” which vary depending on the chemical composition of the VOC.
To test the nose's performance in real-world conditions, scientists assessed the freshness of strawberries, grapes, and pork purchased at the supermarket, and also used the device to detect mechanical damage on apples.
The efficiency turned out to be high, which in the future will allow us to create a next-generation electronic "nose", compact and inexpensive. It can be used not only in everyday life, but also in various fields, including agriculture and medicine, to diagnose, for example, changes in blood sugar levels.
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