... Ruan and Bhushan(1994a–c), Koinkar and Bhushan (1996a,b, 1997a,b), and Sundararajan and Bhushan (1998).Koinkar and Bhushan (1996a,b) and Poon and Bhushan (1995a,b) reported that rms roughness and friction ... roughness of the means of the tip and the sample surfaces, γt and γd are the surface energies of the tip and samplesurfaces, and D0 ~ 0.2 nm (Israelachvili, 1992). As a consequence of the ... distribution of mixed monolayerfilms produced by dipping into a solution of hydrocarbon and fluorocarbon molecules. The resultingfilm consists of discrete islands of hydrocarbon in a sea of fluorocarbon....