28 research outputs found
Micro-Raman Mapping of 3C-SiC Thin Films Grown by Solid–Gas Phase Epitaxy on Si (111)
A series of 3C-SiC films have been grown by a novel method of solid–gas phase epitaxy and studied by Raman scattering and scanning electron microscopy (SEM). It is shown that during the epitaxial growth in an atmosphere of CO, 3C-SiC films of high crystalline quality, with a thickness of 20 nm up to few hundreds nanometers can be formed on a (111) Si wafer, with a simultaneous growth of voids in the silicon substrate under the SiC film. The presence of these voids has been confirmed by SEM and micro-Raman line-mapping experiments. A significant enhancement of the Raman signal was observed in SiC films grown above the voids, and the mechanisms responsible for this enhancement are discussed
Preclinical Models of Brain Metastasis
Research at the Brain Metastasis Group is supported by MINECO grants MINECO-Retos SAF2017-89643-R (M.V.), Bristol-Myers Squibb- Melanoma Research Alliance Young Investigator Award 2017 (498103) (M.V.), Beug Foundation’s Prize for Metastasis Research 2017 (M.V.), Fundación Ramón
Areces (CIVP19S8163) (M.V.), Worldwide Cancer Research (19-0177) (M.V.), H2020-FETOPEN (828972)N
Luminescence properties of gallium nitride layers grown on silicon carbide substrates by gas-phase epitaxy in a chloride system
Hydraulic drive boom lifting mechanism
The paper presents the calculation of the pressure of the hydraulic cylinder of the
boom at the inlet to the throttle, which regulates the speed of lowering the boom with a load,
which provides a non-cavitation operation mode of the hydraulic drive. The pressure calculation
takes into account the change in the angular acceleration of the boom with a load and the
deformation of the working fluid and the walls of the hydraulic cylinder