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Due to its distinct qualities, graphene is a desirable material for olfactory sensors. Graphene-based olfactory sensors have the potential to be extremely sensitive, selective, and responsive to a wide range of chemicals and molecules. Olfactory sensors are used to detect and identify various odours.
The enormous surface area of graphene, which enables it to interact with air molecules and adsorb them to its surface, is one of its key advantages.
This indicates that a graphene-based sensor is capable of detecting even minute quantities of a certain odour.Another benefit of graphene is its electrical conductivity, which may be altered by molecules that have been adsorbed.
This implies that distinct scents can be detected and identified using variations in the electrical characteristics of a graphene-based sensor.
A graphene film or layer is typically placed onto a substrate and then functionalized with a substance that can interact with the target odour molecules to form a graphene-based olfactory sensor.
The graphene surface, for instance, can be coated with tungsten oxide to increase its sensitivity to certain gases.
Then, to enable real-time odour monitoring, the graphene-based olfactory sensor can be integrated into an electronic device, such as a microprocessor or smartphone.
Potential uses for this include environmental monitoring, food quality management, and medical diagnostics.
Before graphene-based olfactory sensors are extensively employed, there are still issues that must be solved.They include enhancing the sensors’ stability and repeatability and creating efficient techniques for functionalizing the graphene surface to raise its sensitivity to various odour molecules.
Global graphene-based olfactory sensor market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
In a recent study, scientists from Toshiba Corporation and Tokyo Institute of Technology (Tokyo Tech) showed that the design of peptide sequences could affect how well graphene-based olfactory sensors could detect odour molecules.
They demonstrated how the development of electronic devices that mimic olfactory receptors and subsequently duplicate the sense of smell by selectively detecting odour molecules may be accomplished using graphene field-effect transistors (GFETs) functionalized with designable peptides.
