Stefano Falletta

May 3, 2024 | pubs.aip.org | Manufacturing Engineering |Grzegorz Greczynski |Xie Zhang |Stefano Falletta

Topics Ultrasound, Hydrophone, Electrical properties and parameters, Energy efficiency, High voltage technology, Nanoparticle, Plasma discharges Underwater electric discharges generating ultrasound pressure waves are essential for a wide range of important applications, ranging from rock fragmentation and industrial treatment of water to bio-medical treatments.

May 2, 2024 | pubs.aip.org | Grzegorz Greczynski |Xie Zhang |Stefano Falletta

In this study, a molecular dynamics model was established to simulate the micromechanical behavior and strengthening mechanism of Gr/HEA nanoindentation and nanoscratch. Finally, the accuracy of the simulation was verified again by qualitative experiments. The main conclusions are summarized as follows:Coating Gr can improve the carrying capacity of the HEA. With an increase in the number of Gr layers, the hardness and load carrying capacity of the Gr/HEA will further be improved.

May 2, 2024 | pubs.aip.org | Université Paris Saclay |Grzegorz Greczynski |Xie Zhang |Stefano Falletta

High-power impulse magnetron sputtering (HiPIMS) technology, as part of the ionized physical vapor deposition (IPVD) processing, meets the requirements of various applications and provides significantly improved quality1,2 of the deposited films regarding crystallographic properties and conformal coating on complex shapes with 3D geometry.2–4 Thus, a comprehensive understanding of the spatial characteristics of the incoming film-forming species, including both neutrals and ions, within the...

May 1, 2024 | pubs.aip.org | Freie Universität Berlin |Grzegorz Greczynski |Xie Zhang |Stefano Falletta

Topics Exchange interactions, Electronic transport, Ferroelectric materials, Magnetic anisotropy, Magnetic devices, Magnetic ordering, Magnetic tunnel junctions, Spintronic devices, Magnetic dipole moment, Transmission probability Two-dimensional (2D) magnetic materials have opened up exciting possibilities for designing van der Waals magnetic tunnel junctions (vdW MTJs).1–4 Similar to the structure of conventional MTJs,5–8 the vdW MTJs are vertically stacked with two ferromagnetic (FM)...

Apr 19, 2024 | pubs.aip.org | Grzegorz Greczynski |Matteo Meneghini |Stefano Falletta

Topics Molecular dynamics, Superlattices, Thermal conductivity, Thermal transport, Wave mechanics, Nanomaterials, Interface properties, Phonon scattering Nanolaminates are the class of composite materials assembled from alternating layers of two or more materials at the nanoscale.