This paper reports a detailed study of how repeated r.f. magnetron sputtering from a hydroxyapatite (HA) powder target affects the nature and reproducibility of a sequential series of thin-film coatings deposited onto Ti6Al4V substrates. An evaluation of the effective lifespan of the HA sputter targets and the reproducibility of the calcium phosphate (CaP) coatings produced from them has been m...

Deposition: Anti-bacterial Activity (Cicada Wing Effect) and Influence on Human Mesenchymal Stem Cells Christina Sengstock, Michael Lopian, Anna Borgmann, Yahya Motemani, Chinmay Khare, Thomas Schildhauer, Alfred Ludwig, Manfred Köller. Bergmannsheil University Hospital /Surgical Research, Ruhr-Universität Bochum, Bochum, Germany, Bochum, Germany, Institute for Materials, Faculty of Mechanical ...

The sputter erosion of arcing contacts is a very complex phenomenon, which is determined by the interaction between electromagnetic force, heat conduction and surface tension of liquid metal. A new model for evaluating the sputter erosion of electrodes is described in this paper, which is based on the electromagnetic forces against the molten pool, flowing velocity, kinetic energy and the surfa...

Konstantinos D. Bakoglidis, Susann Schmidt, Magnus Garbrecht, Ivan G. Ivanov, Jens Jensen, Grzegorz Greczynski and Lars Hultman, Low-temperature growth of low friction wear-resistant amorphous carbon nitride thin films by mid-frequency, high power impulse, and direct current magnetron sputtering, Journal of Vacuum Science & Technology. A, 2015, 33(5), 05E112 . http://dx.doi.org/10.1116/1.492327...

Nb/Cu superconducting superlattices have been fabricated by dc magnetron sputtering. This system shows a vortex glass transition with critical exponents similar to high temperatures super-conductors exponents. The transition dymensionality is governed by the superconducting coupling regime. The vortex glass transition shows a pure two dimensional behavior in decoupled superlat-tices and a quasi...

This paper characterizes phases present in thin Zr films at 773 K of substrate temperature. The effect of pulsed parameters such as pulse frequency, duty cycle and pulse power during the deposition of Zr film on Si(100) at the substrate temperature of 773 K has been studied. Formation of α-phase of zirconium was noticed with (001) preferred orientation at 773 K. Preferred orientation was found ...

The advantage of PARMS for the manufacturing of high performance low loss coatings is demonstrated with UVand VIS band pass filter based on HfO2 respectively Nb2O5 and SiO2.

We investigated the wall-motion and nucleation activation volumes of Co/Pt multilayer films prepared by dc magnetron sputtering under various Ar sputtering pressures. Delicate analysis of time-resolved domain evolution patterns reveals that the nucleation activation volume is generally smaller than the wall-motion activation volume in all the samples, which is consistent with the nucleation-dom...