Frictional Properties of Confined Nanorods


  • NB, YG, and JI thank the US-Israel Binational Science Foundation, grant number 2002059, and MA thanks the Department of Energy (DOE), grant number DE-FG02-87ER45331 for supporting this work. The authors acknowledge the late Prof. Shlomo Efrima for developing the nanoparticles synthesis method.


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Surfactant-coated nanorods, rather than bare spheres, can provide both low friction and good surface wear protection (see figure) when used as additives in fluids that are not good lubricants on their own. A combination of nanoparticle geometry, nanoparticle forces, and dynamic properties appears to be responsible for the improved lubrication.