Ricerc@Sapienza

The assessment of UV radiation exposure in outdoor workers is feasible by means of smart sensors that avail of Information and Communication Technology (ICT). Using wearable sensors, the single workers' exposure can be effectively assessed in the whole body. This work investigated the best position of the sensor on the workers' body, considering the aim of the sensor, its functioning and workers' comfort.

The aim of this paper is to present the main issues concerning the protection of outdoor workers from UV natural radiation, in order to prevent the UV adverse effects, and to discuss the current measurement tools available for workers, evidencing their deficits. A wearable smart sensor for monitoring the effective exposure of the individual worker is proposed as innovative solution.

In our work we investigate the fabrication and properties of ultraviolet-sensing films based on hybrid nanomaterials containing highly conductive graphene nanoplatelets (GNP) and DNA as biological UV-sensitive element. Using sonication processes in suitable solvents, the sensor components are assembled into non-covalent complexes which are then embedded in a polymer matrix to improve the film adhesion on several types of space-grade materials and structures.

Electrical Impedance Tomography (EIT) is an unobtrusive and portable monitoring method allowing the reconstruction of the electrical conductivity in a 2D domain of interest, from the voltage measurements of electrodes positioned along the boundary of the domain. Electrical conductivity changes can be correlated to damage. EIT has been used in biomedical engineering applications (e.g. to monitor the brain function as a patient loses consciousness from anesthesia) and for structural health of advanced composite materials subject to mechanical damage.

We investigate the effects of UV irradiation on novel nanomaterial-based surfaces containing graphene nanoplatelets (GNPs) and DNA, which were designed for radiation sensing applications. Multifunctional surfaces were realized by combining the good electrical

In this work, nanocomposites containing assemblies of graphene nanoplatelets (GNP) and double-stranded DNA are investigated as UV-sensitive materials, as they show good electrical properties combined with the chemical sensitivity of DNA to UV radiation, particularly to the more energetic UV-C band. Nanocomposite films were prepared by drop-casting technique after embedding the graphene-DNA fillers in a flexible polydimethylsiloxane (PDMS) matrix using a suitable solvent.