[ Instrument Network Instrument R & D ] According to foreign media reports, Skoltech scientists have developed a highly sensitive sensor based on cobalt oxide nanoflakes, which can detect various alcohols in the air. The new sensor can be used for medical diagnosis and detection of toxic methanol in the air. The results were published in the Journal of Materials Chemistry A.
The increasing popularity of smart devices and the Internet of Things has become part of our daily lives, which has led to the need for highly sensitive and compact sensors and tools for fast and accurate testing to ensure the safety of the air we breathe. In addition to the widely used carbon monoxide sensors, we should also have equipment for detecting alcohol (such as methanol) that can cause acute poisoning.
A team of scientists from Skoltech and Saratov State Technical University, led by Albert Nasibulin, a professor at the Nanomaterials Lab at the Skoltech Center for Photonics and Quantum Materials (CDMM), has developed a simple but highly sensitive alcohol detector that belongs to A group of chemical-resistant gas sensors that typically use transition metal oxide semiconductors and detect gases based on changes in material resistance caused by the adsorption of gas molecules.
A significant feature of this new technology is that the sensitive material, cobalt oxide, grows directly on the sensor's electrodes, which makes it possible to create a sensor in minutes, skipping several steps in the manufacturing process.
Skoltech's senior research scientist Feol Fedorov said: "Cobalt oxide in the form of nanoflakes makes the device more sensitive to alcohol vapor. Because the sensor helps assess the health of patients by identifying markers of various diseases in the exhaled air, it is in medicine It plays a very important role in diagnosis. In addition, the new sensor can help identify toxic substances in the surrounding air. "
Professor Albert Nasibulin, head of research, commented: "This technology is another step in the selective detection of harmful substances such as methanol. Our recent research enables people to detect methanol Methanol in a mixture with ethanol, which was discovered from hawthorn extracts some time ago, has caused a series of serious poisoning in Russia. Our findings can also be applied to other drugs containing ethanol and many other products. "
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