Molecular Simulation of Nanodroplet Impact Wetting Carbon Nanotube Arrays
In this paper,molecular dynamics simulations are used to study the wetting character-istics of water nanodroplets on different carbon nanotube arrays.The effects of different structures and surface modified carbon nanotube arrays,and different initial motion states of nanodroplets on the wetting properties were investigated.The results show that the chiral parameters n=30 and m=0 carbon nanotubes have stronger water resistance,and the carbon nanotube arrays arranged in parallelepiped with a spacing of 9 nm are favorable to maintain the droplet morphology and avoid irregular wetting phenomena;the diffusion behavior of nanodroplets on the surface gradually changes from the spreading of droplets to the diffusion of gases during the increase of ambient temperature;the dimensionless wetting radius is the smallest when the nanodroplet We number is 6.74 The mini-mum,the wetting process is changed from surface tension-dominated to inertia force-dominated;the change of nanodrop motion angle does not affect the final wetting radius of droplets,but irregular wetting phenomenon will occur at small angles,causing the kinetic energy of nanodroplets to be lost in friction and deformation,which has a negative impact on the anti-water performance.
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维普
