Davide Deiana
YOU?
Author Swipe
View article: Thermally Promoted Cation Exchange at the Solid State in the Transmission Electron Microscope: How It Actually Works
Thermally Promoted Cation Exchange at the Solid State in the Transmission Electron Microscope: How It Actually Works Open
Cation exchange offers a strong postsynthetic tool for nanoparticles that are unachievable via direct synthesis, but its velocity makes observing the onset of the reaction in the liquid state almost impossible. After successfully proving t…
View article: Precipitation in lean Mg-Zn-Ca alloys
Precipitation in lean Mg-Zn-Ca alloys Open
While lean Mg-Zn-Ca alloys are promising materials for temporary implants, questions remain on the impact of Zn and Ca. In this context, the precipitation in Mg-1.5Zn-0.25Ca (ZX20, in wt.%) was investigated upon linear heating from about r…
View article: Unexpected Insights about Cation-Exchange on Metal Oxide Nanoparticles and Its Effect on Their Magnetic Behavior
Unexpected Insights about Cation-Exchange on Metal Oxide Nanoparticles and Its Effect on Their Magnetic Behavior Open
Tuning the magnetic behavior of nanoparticles via the control of their features has always been challenging because these features are mostly intertwined. In the last years, a novel synthetic approach based on cation-exchange has been repo…
View article: Contraction, cation oxidation state and size effects in cerium oxide nanoparticles
Contraction, cation oxidation state and size effects in cerium oxide nanoparticles Open
An accurate description of the structural and chemical modifications of cerium oxide nanoparticles (NPs) is mandatory for understanding their functionality in applications. In this work we investigate the relation between local atomic stru…
View article: Building Composite Iron–Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study
Building Composite Iron–Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study Open
Here we show that it is possible to produce different magnetic core multiple shell heterostructures from monodisperse Fe3O4 spherical magnetic seeds by finely controlling the amount of a manganese precursor and using, in a smart and simple…
View article: Suppressing Nucleation in Metal–Organic Chemical Vapor Deposition of MoS<sub>2</sub> Monolayers by Alkali Metal Halides
Suppressing Nucleation in Metal–Organic Chemical Vapor Deposition of MoS<sub>2</sub> Monolayers by Alkali Metal Halides Open
Toward the large-area deposition of MoS2 layers, we employ metal-organic precursors of Mo and S for a facile and reproducible van der Waals epitaxy on c-plane sapphire. Exposing c-sapphire substrates to alkali metal halide salts such as KI…
View article: Geometrical Effect in 2D Nanopores
Geometrical Effect in 2D Nanopores Open
A long-standing problem in the application of solid-state nanopores is the lack of the precise control over the geometry of artificially formed pores compared to the well-defined geometry in their biological counterpart, that is, protein n…
View article: Identification of core‐shell structures in high active Pt‐alloy catalysts for oxygen reduction by electron spectroscopy
Identification of core‐shell structures in high active Pt‐alloy catalysts for oxygen reduction by electron spectroscopy Open
A potential clean alternative to traditional power sources, in particular for the automotive industry, is represented by low temperature fuel cells [1]. The major limitation of this promising technology lies in the high loading of the most…
View article: Towards defect-free 1-D GaAs/AlGaAs heterostructures based on GaAs nanomembranes
Towards defect-free 1-D GaAs/AlGaAs heterostructures based on GaAs nanomembranes Open
HAADF-STEM view of the GaAs membrane with a quantum well, along with a false color zoom.