Pascal Andreazza
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View article: Phase formation prediction in magnetron sputtered Cu(Ti)Zn thin films: Numerical vs experimental approaches
Phase formation prediction in magnetron sputtered Cu(Ti)Zn thin films: Numerical vs experimental approaches Open
In this work, we evaluated the ability of three numerical methods to predict the phase formation in Cu–Zn binary and Cu–Ti–Zn ternary alloy thin films deposited by DC-magnetron sputter deposition. Molecular dynamics (MD) simulations were c…
View article: Polymer/AgPt bimetallic nanoparticle synergy: optimizing plasmonic durability through controlled synthesis and matrix integration
Polymer/AgPt bimetallic nanoparticle synergy: optimizing plasmonic durability through controlled synthesis and matrix integration Open
The graph shows the structural and time-dependent optical behavior of polymer-supported AgPt nanoalloys, showing key transformations vital for plasmonics, catalysis, and sensing, aiding the design of stable, high-performance nanomaterials.
View article: Enhancement of piezoelectric properties in a narrow cerium doping range of $\text{Ba}_{1-x}\text{Ca}_{x}\text{Ti}_{1-y}\text{Zr}_{y}\text{O}_{3}$ evidenced by high throughput experiment
Enhancement of piezoelectric properties in a narrow cerium doping range of $\text{Ba}_{1-x}\text{Ca}_{x}\text{Ti}_{1-y}\text{Zr}_{y}\text{O}_{3}$ evidenced by high throughput experiment Open
Lead-free materials based on the $\text{(Ba,Ca)(Zr,Ti)O}_{3}$ (BCZT) system exhibit excellent electromechanical properties that can be strongly modified by small amounts of dopants. Here, we use a high throughput strategy to unravel the in…
View article: Equilibrium structure and shape of Ag and Pt nanoparticles grown on silica surfaces: From experimental investigations to the determination of a metal–silica potential
Equilibrium structure and shape of Ag and Pt nanoparticles grown on silica surfaces: From experimental investigations to the determination of a metal–silica potential Open
A combination of experimental and numerical investigations on metallic silver and platinum nanoparticles deposited on silica substrates is presented, with a focus on metal–substrate interactions. Experimentally, the nanoparticles, obtained…
View article: Highly Efficient Consolidation of Mesoporous Silica Microstructures Using Photonic Curing
Highly Efficient Consolidation of Mesoporous Silica Microstructures Using Photonic Curing Open
Photonic curing offers the advantage of strongly reducing the treatment time of materials, especially for industrial purposes. The current work highlights the benefits of photonic curing for mesoporous silica made by inkjet‐printing. This …
View article: Equilibrium structure and shape of Ag and Pt nanoparticles grown on silica surfaces: from experimental investigations to the determination of a metal-silica potential
Equilibrium structure and shape of Ag and Pt nanoparticles grown on silica surfaces: from experimental investigations to the determination of a metal-silica potential Open
A combination of experimental and numerical calculations on metallic silver and platinum nanoparticles deposited on silica substrates is presented, with a focus on the metal-substrate interactions. Experimentally, the nanoparticles are ela…
View article: Subcoercive field dielectric response of 0.5(Ba0.7Ca0.3TiO3)-0.5(BaZr0.2Ti0.8O3) thin film: Peculiar third harmonic signature of phase transitions and residual ferroelectricity
Subcoercive field dielectric response of 0.5(Ba0.7Ca0.3TiO3)-0.5(BaZr0.2Ti0.8O3) thin film: Peculiar third harmonic signature of phase transitions and residual ferroelectricity Open
Subcoercive field non-linearities in 0.5(Ba0.7Ca0.3TiO3)-0.5(BaZr0.2Ti0.8O3) (BCTZ 50/50) thin film elaborated using pulsed laser deposition are studied using permittivity and phase angle of the third harmonic measurements as a function of…
View article: Subcoercive-field dielectric response of $0.5(\text{Ba}_{0.7}\text{Ca}_{0.3}\text{TiO}_{3})-0.5(\text{BaZr}_{0.2}\text{Ti}_{0.8}\text{O}_{3})$ thin film: peculiar third harmonic signature of phase transitions and residual ferroelectricity
Subcoercive-field dielectric response of $0.5(\text{Ba}_{0.7}\text{Ca}_{0.3}\text{TiO}_{3})-0.5(\text{BaZr}_{0.2}\text{Ti}_{0.8}\text{O}_{3})$ thin film: peculiar third harmonic signature of phase transitions and residual ferroelectricity Open
Sub-coercive field non-linearities in $0.5(\text{Ba}_{0.7}\text{Ca}_{0.3}\text{TiO}_{3})-0.5(\text{BaZr}_{0.2}\text{Ti}_{0.8}\text{O}_{3})$ (BCTZ 50/50) thin film elaborated using pulsed laser deposition are studied using permittivity and …
View article: Effect of Nanographene Coating on the Seebeck Coefficient of Mesoporous Silicon
Effect of Nanographene Coating on the Seebeck Coefficient of Mesoporous Silicon Open
Nanographene–mesoporous silicon (G-PSi) composites have recently emerged as a promising class of nanomaterials with tuneable physical properties. In this study, we investigated the impact of nanographene coating on the Seebeck coefficient …
View article: Sudden collective atomic rearrangements trigger the growth of defect-free silver icosahedra
Sudden collective atomic rearrangements trigger the growth of defect-free silver icosahedra Open
The shell-by-shell growth of metastable silver icosahedra is experimentally observed and its key mechanisms are unveiled by molecular dynamics simulations. Icosahedra transform into decahedra upon annealing or ageing.
View article: Plasmon-driven methanol oxidation on PtAg nanoalloys prepared by improved pulsed laser deposition
Plasmon-driven methanol oxidation on PtAg nanoalloys prepared by improved pulsed laser deposition Open
We proposed a general strategy for alloying silver and platinum elements into single-phase solid-solution nanoparticles with arbitrarily desired composition by bonding pure Pt targets with pure Ag strips in an improved pulsed laser deposit…
View article: Structural and optical characterization of nanoalloys mixing gold or silver with aluminium or indium: evolution under various reactive environments
Structural and optical characterization of nanoalloys mixing gold or silver with aluminium or indium: evolution under various reactive environments Open
The atomic and chemical structure and the optical response of A x B 1− x bimetallic nanoparticles (BNPs) combining gold or silver (A) with aluminium or indium (B) were investigated at various stoichiometries.
View article: Combined atomistic simulations to explore metastability and substrate effects in Ag–Co nanoalloy systems
Combined atomistic simulations to explore metastability and substrate effects in Ag–Co nanoalloy systems Open
Combined experimental and simulation study on AgCo nanoalloys: (1) effect of amorphous carbon substrate: aspherical shape and orientational order; (2) kinetic effect due to atom-by-atom growth: growth of Co on Ag leads to subsurface cluste…
View article: Out-of-equilibrium supported Pt-Co core-shell nanoparticles stabilized by kinetic trapping at room temperature
Out-of-equilibrium supported Pt-Co core-shell nanoparticles stabilized by kinetic trapping at room temperature Open
The chemical stability of supported CoPt nanoparticles in out-of-equilibrium core-shell configurations was investigated mainly by anomalous grazing incidence small angle X-ray scattering (AGISAXS) in association with combined transmission …
View article: Evidence of Ba-rich surface segregation in Ba<sub>1-x</sub>Sr<sub>x</sub>TiO<sub>3</sub> and Ba-rich surfactant in SrTiO<sub>3</sub>/ Ba<sub>1-x</sub>Sr<sub>x</sub>TiO<sub>3</sub> stacks grown by combinatorial pulsed laser deposition
Evidence of Ba-rich surface segregation in Ba<sub>1-x</sub>Sr<sub>x</sub>TiO<sub>3</sub> and Ba-rich surfactant in SrTiO<sub>3</sub>/ Ba<sub>1-x</sub>Sr<sub>x</sub>TiO<sub>3</sub> stacks grown by combinatorial pulsed laser deposition Open
The interface of a La 0.7 Sr 0.3 MnO 3 /SrTiO 3 bilayer was modulated by introducing 3 unit cells of Ba 1-x Sr x TiO 3 using Combinatorial Pulsed Laser Deposition. A wide range of chemical compositions was studied within the same sample, w…
View article: Synthesis of Platinum Nanoparticles by Plasma Sputtering onto Glycerol: Effect of Argon Pressure on Their Physicochemical Properties
Synthesis of Platinum Nanoparticles by Plasma Sputtering onto Glycerol: Effect of Argon Pressure on Their Physicochemical Properties Open
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View article: The five shades of oleylamine in a morphological transition of cobalt nanospheres to nanorods
The five shades of oleylamine in a morphological transition of cobalt nanospheres to nanorods Open
Understanding of cobalt nanorods’ (Co NRs) formation still remains challenging when it comes to enhancing their anisotropic properties applicable in magnetic or catalytic areas.
View article: From metastability to equilibrium during the sequential growth of Co–Ag supported clusters: a real-time investigation
From metastability to equilibrium during the sequential growth of Co–Ag supported clusters: a real-time investigation Open
Real time analysis of Co atom incorporation in Ag nanoparticles, followed almost atom-by-atom by combined X-ray scattering and molecular-dynamics methods: from the sub-surface position to quasi-Janus then core–shell structures.
View article: The role of oxygen on the growth of palladium clusters synthesized by gas aggregation source
The role of oxygen on the growth of palladium clusters synthesized by gas aggregation source Open
Palladium clusters are grown using a gas aggregation source coupled to magnetron sputtering with oxygen as reactive gas. Clusters with a mean size between 2.6 and 3.3 nm are obtained. Oxygen enhances the deposition rate by a factor 3 (from…
View article: Thin Films with Perpendicular Tetragonally Packed Rectangular Rods Obtained from Blends of Linear ABC Block Terpolymers
Thin Films with Perpendicular Tetragonally Packed Rectangular Rods Obtained from Blends of Linear ABC Block Terpolymers Open
A binary blend of poly(isoprene-block-styrene-block-(2-vinylpyridine)) (ISP) triblock terpolymers, having the same chain length but different compositions, was used to achieve an ordered lattice with 4-fold symmetry of rectangular-shaped r…
View article: Cyclable and non-volatile electric field control of magnetism in BiFeO3 based magnetoelectric heterostructures
Cyclable and non-volatile electric field control of magnetism in BiFeO3 based magnetoelectric heterostructures Open
Room temperature manipulation of the ferromagnetic state via an electric field is investigated in Ni/BiFe0.95Mn0.05O3 thin film heterostructures. A 600% increase in the magnetic coercive field of the Ni layer is observed at the initial DC …
View article: Study of iron-bearing dolomite dissolution at various temperatures: Evidence for the formation of secondary nanocrystalline iron-rich phases on the dolomite surface
Study of iron-bearing dolomite dissolution at various temperatures: Evidence for the formation of secondary nanocrystalline iron-rich phases on the dolomite surface Open
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