Molecular dynamics simulation on the friction properties of nanofluids confined by idealized surfaces

Advances in nonequilibrium molecular dynamics simulations of lubricants and additives

“…NEMD simulations have been performed on atomically-smooth surfaces to study their effect on friction [273] and flow [256] under hydrodynamic lubrication conditions. Compressive LVMD simulations have also been used to study the load carrying capacity of copper nanoparticles in an n-octane lubricant [274].…”

Mathematical Modeling and Computer Simulations of Nanofluid Flow with Applications to Cooling and Lubrication

“…These effects separated the friction surfaces and led to enhanced lubrication properties. The molecular dynamic simulation of Hu et al [22] demonstrated that phase transition took place under high load, while the transition pressure of an NP-added lubricant was higher than that of the base lubricant. Nanoparticles could effectively increase the load-carrying capacity, especially for NPs with smaller sizes, due to stronger micro-motions and volume effects.…”

“…Over the last several decades, there has been an ever-increasing interest in nanofluids, i.e., liquids with all sorts of solid nanoparticles (NPs) well dispersed at low concentrations. Application areas for nanofluids range from engineering to medicine, taking advantage of their unique properties in heat transfer [1][2][3], drug delivery [4][5][6][7], mass transport [8,9], boiling phenomena [10,11], absorption and radiation [12][13][14][15], optics [16,17], reacting surfaces and catalysts [18], spray-coating [19,20], and lubrication [21][22][23][24]. Though initially investigated in the heat transfer community (see [25]), the concept of "nanofluids" is being continuously expanded in developing more and more useful applications.…”

Stick-slip friction: A Monte Carlo study

“…In particular, this type of systems have been extensively studied through SFA experiments by Israelachvilli, who, among other things, found that friction at the nano-scale could be correlated with the adhesion hysteresis phenomenon [6]. Furthermore, in order to achieve a fundamental understanding of these processes, efforts have and are still been made from both experimental [7][8][9][10][11][12][13][14][15] as well as theoretical and simulations points of view, such as through Molecular Dynamic Simulations (MDS) [16][17][18][19][20][21][22][23][24][25][26][27][28]. However, a satisfactory explanation of the friction mechanisms involved in this type of systems is still lacking, for example, with respect to the origin of phase transitions evidenced by the SS behavior and the effects of the adhesion hysteresis phenomenon.…”