A5007878932- Surface and Thin Film Phenomena
- Linguistic Studies and Language Acquisition
- Catalytic Processes in Materials Science
- Advanced Chemical Physics Studies
- Graphene research and applications
- Electronic and Structural Properties of Oxides
- nanoparticles nucleation surface interactions
- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- Advanced Photocatalysis Techniques
- Physics of Superconductivity and Magnetism
- Gold and Silver Nanoparticles Synthesis and Applications
- Laser-Ablation Synthesis of Nanoparticles
- Quantum and electron transport phenomena
- Electron and X-Ray Spectroscopy Techniques
- Italian Literature and Culture
- Electrocatalysts for Energy Conversion
- Educational and Social Studies
- Semiconductor materials and devices
- Surface Chemistry and Catalysis
- Nanoparticles: synthesis and applications
- Second Language Learning and Teaching
- ZnO doping and properties
- Natural Language Processing Techniques
Università Cattolica del Sacro Cuore
2016-2025
Material Physics Center
2014-2025
Centre National de la Recherche Scientifique
2021
Institut Lumière Matière
2021
Université Claude Bernard Lyon 1
2021
Brescia University
2015-2019
University of Siena
2017
University of Antwerp
2017
Laboratoire de physique des Solides
2017
KU Leuven
2017
Growth and transport properties of thin Ag films on Si(111) are investigated by scanning tunneling microscopy in situ resistivity measurements. At low coverage, the adatoms form isolated islands with a strongly preferred height flat tops, rather than commonly observed pyramids. Such plateaus increase their lateral extent coverage without changing height, forming percolated network sharply reduced above critical coverage. This behavior suggests how quantized electrons confined could influence...
Bactericidal nanoparticle coatings are very promising for hindering the indirect transmission of pathogens through cross-contaminated surfaces.
Abstract The ongoing miniaturization of electronic devices has boosted the development new post-silicon two-dimensional (2D) semiconductors, such as transition metal dichalcogenides, one most prominent materials being molybdenum disulfide (MoS 2 ). A major obstacle for industrial production MoS -based lies in growth techniques. These must ensure reliable fabrication with tailored 2D properties to allow typical direct bandgap 1.9 eV, while maintaining large-area and device compatibility. In...
A major obstacle toward employing TiO2 as an efficient photoactive material is related to its large optical band gap, strongly limiting visible light absorption. Substitutional doping with both donors and acceptors (codoping) potentially leads a significant gap reduction, but the effectiveness of codoping approach remains limited by low solubility dopants inside TiO2. Here we show that nanostructured Cr N codoped thin films can be obtained supersonic cluster beam deposition (SCBD) high...
Scanning tunneling microscopy and X-ray spectroscopy measurements are combined to first-principles simulations investigate the formation of graphene nanoribbons (GNRs) on Au(110), as based surface-mediated reaction 10,10′-dibromo-9,9′-bianthracene (DBBA) molecules. At variance with Au(111), two different pathways identified for GNR self-assembly controlled by both adsorption temperature surface coverage DBBA molecular precursors. Room-temperature deposition Au(110) leads same steps obtained...
Developing smart, environmentally friendly, and effective antibacterial surfaces is fundamental to contrast the diffusion of human infections diseases for applications in biomedical food packaging sectors. To this purpose, here we combine aluminum-doped zinc oxide (AZO) Ag grow nanostructured composite coatings on bioplastic polylactide (PLA) substrates. The AZO layers are grown by RF magnetron sputtering, then functionalized with atomic form sputtering nanoparticles supersonic cluster beam...
Iron-nitrogen-carbon (Fe-N-C) materials emerged as one of the best non-platinum group material (non-PGM) alternatives to Pt/C catalysts for electrochemical reduction O2 in fuel cells. Co-doping with a secondary metal center is possible choice further enhance activity toward oxygen reaction (ORR). Here, classical Fe-N-C were co-doped Sn center. Sn-N-C according literature shows excellent activity, particular cell setup; here, same catalyst non-negligible 0.5 M H2SO4 electrolyte but not high...
Graphitic carbon nitride (gCN) is a promising n-type semiconductor widely investigated for photo-assisted water splitting, but less studied the (photo)electrochemical degradation of aqueous organic pollutants. In these fields, attractive perspectives advancements are offered by proper engineering material properties, e.g., depositing gCN onto conductive and porous scaffolds, tailoring its nanoscale morphology, functionalizing it with suitable cocatalysts. The present study reports on simple...
Studies of the healing artificial defects in surface highly oriented pyrolitic graphite (HOPG) by chemical vapor deposition (CVD) acetylene show that only single-layer depth could be healed completely during CVD treatment. A promising method is introduced for defect control surfaces graphite, graphene, and graphene-based materials, with important implications their application. Structural graphitic layers have historically received considerable attention, primarily directed towards behavior...
Polyvinyl alcohol (PVA) electrospun nanofibers containing Ag nanoparticles (NPs) have been deposited on glass substrates. The aim of the work was to test feasibility this approach for detection biogenic amines by using either localized surface plasmon resonance quenching caused adsorption NPs or detecting enhanced Raman spectroscopy (SERS) after adsorption, from gas phase, metal NPs. Two different approaches adopted. In first one an ethanol/water solution AgNO3 used directly in...
Recent studies indicated that noncompensated cation-anion codoping of wide-band-gap oxide semiconductors such as anatase ${\mathrm{TiO}}_{2}$ significantly reduces the optical band gap and thus strongly enhances absorption visible light [W. Zhu et al., Phys. Rev. Lett. 103, 226401 (2009)]. We used soft x-ray spectroscopy to fully determine location nature impurity levels responsible for extraordinarily large ($\ensuremath{\sim}1\text{ }\mathrm{eV}$) reduction codoped rutile...
The interaction of iron with graphene/Pt(111) has been experimentally and theoretically investigated evidencing a splitting graphene π bands due to the hybridization Fe 3d states.
Abstract Here we investigated the dynamics of OER activity NiFe (90/10) catalysts over 1000 potential sweep cycles as a function their mass loading. Over twenty different films with loading in 10 ng/cm 2 –30 μg/cm range were deposited by Supersonic Cluster Beam Deposition (SCBD), allowing to study progress sub‐monolayer, monolayer and multilayer regimes. Upon prolonged sweeps electrocatalytic performances multilayers decreased, while those monolayers significantly improved. The best balance...
The plasmon-mediated growth of noble metal nanoplates through the reduction precursors onto resonantly excited seeds lined with planar defects stands out as one triumphs photochemistry and nanometal synthesis. Such modes are, however, not without their drawbacks and, a lack suitable alternatives, limitations remain on use light synthetic control. Herein, two-reagent seed-mediated gold nanoplate synthesis is demonstrated photochemical pathway where illumination solution, opposed to emerging...
Ultrathin metal nanoparticles coatings, synthesized by gas-phase deposition, are emerging as go-to materials in a variety of fields ranging from pathogens control and sensing to energy storage. Predicting their morphology mechanical properties beyond trial-and-error approach is crucial issue limiting exploitation real-life applications. The Ag nanoparticle ultrathin films, supersonic cluster beam here assessed adopting bottom-up, multitechnique approach. A virtual film model proposed merging...
The morphological and mechanical properties of nanoparticles-based ultrathin Ag films, synthesized by supersonic cluster beam deposition over a sapphire substrate, are unveiled exploiting ultrafast optoacoustic, atomic force microscopy, X-ray photoelectron spectroscopies, diffraction techniques. with thicknesses in the 10–50 nm range, have porous structure composed metallic nanoparticles crystalline average diameter 6 nm. films acoustic modes hypersonic frequency thinner frequencies...
NiFe catalysts have emerged as promising low-cost alternatives to Ir- or Ru-based anodes for water splitting. Despite their potential, widespread adoption in commercial alkaline electrolyzers is currently hindered by instability and rapid deactivation under real operating conditions. In this study, we investigate the behavior of (90/10% at.) thin film (∼35 nm) electrodes fabricated supersonic cluster beam deposition electrocatalysts oxygen evolution reaction media during prolonged...
Abstract This study emphasizes the effect of CeO 2 on Pt nanoparticle (NP) dimension, stability, and activity versus oxygen reduction reaction. It is demonstrated that one‐pot synthesis NPs along with over carbon support produces small (2 nm) higher activity, than sole NPs, thanks to cooperative interaction exerted by . nicely using synchrotron wide‐angle X‐ray total scattering advanced data analysis, monitoring in situ nucleation growth presence preformed or a Ce precursor. Raman,...
Abstract This article analyzes patterns of laughter in bookshop service encounters England and Italy with the function initiating remedy. Laughter sometimes occurs turn a dispreferred response by assistant (i.e., book required is not available, it cannot be supplied, etc.), both English Italian. However, preferred organization such turns different: In corpus recurrently turn‐initial, anticipating an account same turn, whereas Italian turn‐final, leaving to customer possibility elicitating...