Abstract
The aim of this work is to develop mobile sensors for acetone based on metal oxide for their subsequent use in the development of devices for monitoring health status. The following research methods were used in the work: measuring the sensitivity of sensor samples on the film thickness and annealing temperature; removal of dependences of sensitivity, selectivity and detection limits on operating temperature; studying the morphology of sensor samples using X-ray diffractometry and field emission scanning electron microscopy. An acetone sensor was developed on the basis of nanostructured thin zinc oxide films, its sensitivity was determined at various temperatures, as a result of which the optimal operating temperature of the sensor was about 400 ° C. The sensitivity value of the ZnO gas sensor was more than 26.5% at 1000 ppm, 65% at 500 ppm and 5% at 300 ppm acetone. Possible future directions of development are the development of multisensor VOC sensor systems for implementation in wireless intelligent systems for monitoring the health of the population.
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