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Metallic seed nanolayers for enhanced nucleation of nanocrystalline diamond thin films KU Leuven
The enhancement of the nucleation and subsequent growth of nanocrystalline diamond (NCD) films with a submicrometer thickness control on silicon substrates is demonstrated by using a sputter deposition of six different metallic (Cr, Mo, Nb, Ti, V and W) seed nanolayers. The effectiveness of altered surface morphology and surface chemistry is discussed. We show that the number density of nanodiamond particles embedded on the nanorough metallic ...
Separation of intra- and intergranular magnetotransport properties in nanocrystalline diamond films on the metallic side of the metal-insulator transition Hasselt University KU Leuven
A systematic study on the morphology and electronic properties of thin heavily boron-doped nanocrystalline diamond (NCD) films is presented. The films have nominally the same thickness (approximate to 150 nm) and are grown with a fixed B/C ratio (5000 ppm) but with different C/H ratios (0.5-5%) in the gas phase. The morphology of the films is investigated by x-ray diffraction and atomic force microscopy measurements, which confirm that lower C/H ...
The Seebeck coefficient of sputter deposited metallic thin films : the role of process conditions Ghent University
Because of their reduced dimensions and mass, thin film thermocouples are a promising candidate for embedded sensors in composite materials, especially for application in lightweight and smart structures. The sensitivity of the thin film thermocouple depends however on the process conditions during deposition. In this work, the influence of the discharge current and residual gas impurities on the Seebeck coefficient is experimentally ...
Novel class of nanostructured metallic glass films with superior and tunable mechanical properties University of Antwerp
A novel class of nanostructured Zr50Cu50 (%at.) metallic glass films with superior and tunable mechanical properties is produced by pulsed laser deposition. The process can be controlled to synthetize a wide range of film microstructures including dense fully amorphous, amorphous embedded with nanocrystals and amorphous nano-granular. A unique dense self-assembled nano-laminated atomic arrangement characterized by alternating Cu-rich and ...
Granular superconductivity in metallic and insulating nanocrystalline boron-doped diamond thin films Hasselt University KU Leuven
The low-temperature electrical transport properties of nanocrystalline boron-doped diamond (b-NCD) thin films have been found to be strongly affected by the system's granularity. The important differences between the high and low-temperature behaviour are caused by the inhomogeneous nucleation of superconductivity in the samples. In this paper we will discuss the experimental data obtained on several b-NCD thin films, which were studied by ...
Atomic-scale viscoplasticity mechanisms revealed in high ductility metallic glass films University of Antwerp
The fundamental plasticity mechanisms in thin freestanding Zr65Ni35 metallic glass films are investigated in order to unravel the origin of an outstanding strength/ductility balance. The deformation process is homogenous until fracture with no evidence of catastrophic shear banding. The creep/relaxation behaviour of the films was characterized by on-chip tensile testing, revealing an activation volume in the range 100-200 angstrom(3). Advanced ...
Resistivity scaling in metallic thin films and nanowires due to grain boundary and surface roughness scattering KU Leuven University of Antwerp
© 2016 A modeling approach, based on an analytical solution of the semiclassical multi-subband Boltzmann transport equation, is presented to study resistivity scaling in metallic thin films and nanowires due to grain boundary and surface roughness scattering. While taking into account the detailed statistical properties of grains, roughness and barrier material as well as the metallic band structure and quantum mechanical aspects of scattering ...
Electrical characteristics of Cu(In,Ga)Se2 thin films solar cells on metallic foil substrates Ghent University
Flexible thin-film solar cells offer distinct advantages over cells on rigid glass substrates, but theirefficiency is yet somewhat lower. When using metallic foil substrates, diffusion of impurities from the metalsubstrate to the CIGS cell should be avoided or be under control. Here the electrical characteristics of thin film CIGSsolar cells on metallic substrate foils are studied in order to assess the influence of the substrate on the ...