Influence of chain ordering on frictional properties of self-assembled monolayers (SAMs) in nano-lubrication

Mixed lubrication of steel by C18 fatty acids revisited. Part I: Toward the formation of carboxylate

“…Molecular dynamics (MD) simulations have already been applied to a variety of surfactant type molecule/surface systems [12]. Particularly, MD simulations have been applied to stearic acid on gold, silicon or carbon based surfaces using the self-assembled monolayer (SAM) model [13,14,15]. Well-organized SAM was found to exhibit lower friction than less densely packed or disordered monolayers which possess some defects and leads to higher friction [15,16].…”

Friction Modifier Additives

“…These include the surface forces apparatus (SFA) [58][59][60][61], atomic/lateral force microscope (AFM/LFM) [62][63][64][65], quartz crystal microbalance (QCM) [66], ultrathin film interferometry (UTFI) [67], neutron reflectometry [68,69] and various surface-specific vibrational spectroscopies [70][71][72]. Methods were also developed to generate model close-packed monolayers by chemical grafting of self-assembled alkylthiols and alkyl siloxanes on solid surfaces [73][74].…”

Investigation of carbon nanotube-containing film on silicon substrates and its tribological behavior

“…The self-assemble monolayer (SAM) has been extensively investigated as the lubricant film for M/NEMS, which can improve the friction and wear properties by deposition on the Si substrate [7,8]. However, under higher load and speed conditions, SAM is not enough to provide long life to the moving M/NEMS components [9,10].…”