Takahisa Kato

TL;DR: In this article, a linear elastic contact between a rigid plane and a halfspace whose surface height is described by a bandwidth-limited Fourier series is considered, and the surface normal displacements and contact pressures are found by a numerical technique that exploits the structure of the Fast Fourier Transform (FFT) and an exact result in linear elasticity.

TL;DR: A numerical simulation technique for calculating the pressure distribution and the deformed geometry of an elastic half space which has a hard surface layer in contact with a rigid indenter with a rough surface is presented in this article.

TL;DR: Structural analysis of the carbonaceous sliding interfaces at the atomic scale in two superlubricious solid lubricants are presented by probing the contact area using state-of-the-art scanning electron transmission microscopy and electron energy-loss spectroscopy to suggest that the occurrence of a superl lubrication state is generally dependent on the formation of interfacial nanostructures, mainly a tribolayer, by different carbon rehybridization pathways.

TL;DR: This study demonstrated that the time-dependent changes ofTFLL spread are compatible with the Voigt model of viscoelasticity and that the initial velocity of TFLL spread after a blink decreased in proportion to the decrease of tear volume.

TL;DR: Superlubricity of Si-containing hydrogenated amorphous carbon (a-C:H:Si) films has been systematically investigated in relation to the film bonding structure and the environmental atmosphere and hydrogen is highlighted for its decisive role in obtaining superlow friction.