The World Health Organisation has recognised noise as an environmental risk factor.1 As a metropolis, Barcelona's traffic on the streets often causes discomfort, which can reduce the quality of sleep of citizens, especially older people. In addition, the ideal humidity for people's health and comfort is between 30 and 60%.2 Barcelona, as a city by the sea, has a humidity of around 70%. The effects of such high humidity on the body are not yet clear. This high level of humidity seems to have a negative influence on the quality of sleep of citizens, especially the elderly. Molybdenum disulphide, MoS2, among other new two-dimensional materials, has opened up new possibilities in electronics, due to its ultra-rapid nature and sensitivity to environmental conditions. The suspended MoS2-based humidity and sound sensor has high sensing properties, which would allow it to accurately measure the environmental state.3 Within the LEONINE project, we seek to monitor the effects of traffic noise and humidity on the sleep quality of people in Barcelona, where single and multi-layer MoS2 sensors will be developed and employed to monitor this impact. Volunteers from schools in Catalonia, especially 10 girls from the "La Vall" school in Bellaterra, will be trained and taught to carry out part of this research. One of the objectives of the proposal is to develop the latest in sound and humidity sensors, and to prepare new young Catalan talent, especially female, to work in science. This innovative model of collaborative and multidisciplinary work on scientific projects between research centres and schools will help to promote the progress of scientific research in Catalonia.
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