Can graphene improve the thermal conductivity of copper nanofluids?

Abstract

Copper (Cu) nanofluids (NFs) have attracted attention due to their high thermal conductivity, which has conferred a wide variety of applications. However, their high reactivity favors oxidation, corrosion and aggregation,...

On the mechanical response of graphene-capped copper nanoparticles

“…8 The embedded atom method (EAM) potential was applied to consider the Cu–Cu interactions, 9 while the adaptive intermolecular reactive bond order (AIREBO) force field developed by Stuart et al was used to model the C–C, C–H, and H–H interactions in the graphene flakes. 10 A parametrization of the Morse potential previously developed by our team 6 was used to consider the interactions of the Cu NP with the graphene flakes. In this potential, two types of Cu atoms were defined: Cu low , which represents the Cu atoms with a coordination number ≤8, and Cu high , those atoms with a coordination number between 9 and 12.…”

“…For example, in a recent study, we determined that copper NPs capped by graphene flakes (Cu@G) show an improved thermal conductivity compared to pure Cu NPs. 6 In the present work, we present an analysis of the structure and dynamics of Cu and Cu@G NPs under compression, obtained from a set of molecular dynamics (MD) simulations. The nucleation, nature of dislocations, and the generation of stacking faults in the pure Cu NPs and the hybrid system were analysed.…”

“…For example, in a recent study, we determined that copper NPs capped by graphene flakes (Cu@G) show an improved thermal conductivity compared to pure Cu NPs. 6…”