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- Development and stability study of graphene nanofluidsPublication . Ramos, C.A.; Martins, Inês; Vilão, G.(Introduction) Graphene nanofluids have been studied since they have different properties that make them applicable in different areas. These nano fluids exhibit photothermal characteristics of interest to an area of great relevance, namely photothermal therapy, which consists of the degradation of cells, for example, cancerous ones, from the increase in temperature. Since graphene nanofluids have numerous potentialities, the study of their development and stability is extremely important. In this project, a graphene nanofluid in ethylene glycol was developed using a twostep method. The nanofluid was subjected to an ultrasonic homogenizer. In order to study the stability of the nanofluid as a function of sonication time, UV-Vis spectroscopy was performed. Additionally, a study of the nanofluid's pH in relation to the sonication time it underwent was conducted.