Advanced materials 1 Biocompatibility 1 Coronavirus 1 Cost effectiveness 1 Face masks 1 Graphene 1 Graphene and Advanced materials 1 Graphene and advanced material 1 Patient monitoring 1 Piezoresistive sensor 1 Piezoresistive sensors 1 Real time monitoring 1 Real-time monitoring 1 Respiration monitoring 1 Sensing devices 1 Smart face mask 1 Wearable sensing Wearable sensing device 1 Wearable sensors 1