Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect

Rhenium-doped MoS2 films

Superlubricity and Wearless Sliding in Diamondlike Carbon Films

Diamondlike carbon (DLC) films have attracted great interest in recent years mainly because of their unusual optical, electrical, mechanical, and tribological properties. Such properties are currently being exploited for a wide range of engineering applications including magnetic hard disks, gears, sliding and roller bearings, scratch resistant glasses, biomedical implants, etc. Systematic stud...

Enhanced pinning in superconducting thin films with graded pinning landscapes

landscapes M. Motta, F. Colauto, W. A. Ortiz, J. Fritzsche, J. Cuppens, W. Gillijns, V. V. Moshchalkov, T. H. Johansen, A. Sanchez, and A. V. Silhanek Departamento de F ısica, Universidade Federal de S~ ao Carlos, 13565-905 S~ ao Carlos, SP, Brazil Department of Applied Physics, Chalmers University of Technology, S-412 96 G€ oteborg, Sweden INPAC – Institute for Nanoscale Physics and Chemistry,...

Ultraviolet detectors in thin sputtered ZnO films.

Sputtering of ZnO is a well-known technique.'9 The application of sputtered thin films of ZnO has mainly been as surface acoustic wave transducers. To our knowledge nobody has yet used these films as detectors for UV radiation. Measurements of the intensity of UV radiation, for example in medical applications in connection with UV irradiation of the skin, are very inaccurate due to the lack of ...

Effect of temperature and velocity on superlubricity

We study the effects of temperature and sliding velocity on superlubricity in numerical simulations of the Frenkel-Kontorova model. We show that resonant excitations of the phonons in an incommensurate sliding body lead to an effective friction and to thermal equilibrium with energy distributed over the internal degrees of freedom. For finite temperature, the effective friction can be described...