Graphene Supernose for Smartphones

Your phones will be able to smell toxic gasses very soon with graphene-based sensors. Those sensors will be very small and can be integrated into every cellphone or other things and used to monitor the levels of toxic gasses in cities in real time. This allows you to select "green routes" to avoid polluted areas when traveling in cities. Furthermore, by monitoring the levels of those toxic gasses in real time, we can easily find the biggest pollutants and deal with the problem.
The graphene-based sensors demonstrated in this video are being developed at the Institute of Physics, University of Tartu by the Laboratory of Sensor Technologies and the Laboratory of Thin Film Technology. The research is done under the Graphene Flagship project, receiving funds from the European Union.

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Once the dust particle enters and adsorbed in graphene layer will it be able to reuse