Dynamic wetting behavior of nanofluid droplet on a vertically vibrating surface: A molecular dynamics study

Nanofluidic devices have been rapidly developed in recent years for a series of biological applications. Therefore, it is critical to understand the liquid characteristics that might be different from the ones at a larger scale. We try to establish a general system to describe the wetting behavior of nanoparticle droplets on vertically vibrating surfaces in this study. The results show that the contact states of nanofluids with the substrate can be changed by changing the vibration amplitude while the period remains constant. The effects of volume fraction and hydrophilicity of nanoparticles on the behavior of nanofluids on the vibrating surface are also studied. It is found that the volume fraction has a greater impact on dynamic wetting behavior of nanofluid droplet than hydrophilicity of the nanoparticles, but the influence of the volume fraction and hydrophilicity of nanoparticles on the nanofluids is concentrated in the initial stage of vibration. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

This study aims to investigate the wetting behavior of nanoparticle droplets on vertically vibrating surfaces and examine the effects of volume fraction and hydrophilicity. The results demonstrate that the contact states of nanofluids with the substrate can be altered by changing the vibration amplitude while keeping the period constant. The volume fraction has a greater impact on the dynamic wetting behavior of the droplets compared to the hydrophilicity of nanoparticles, and the influence of volume fraction and hydrophilicity is concentrated in the initial stage of vibration.