A5026621634- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Rare-earth and actinide compounds
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Superconductivity in MgB2 and Alloys
- Inflammatory Bowel Disease
- High-pressure geophysics and materials
- Magnetic properties of thin films
- Microscopic Colitis
- Superconducting Materials and Applications
- Multiferroics and related materials
- Iron-based superconductors research
- Luminescence Properties of Advanced Materials
- Magnetic Properties of Alloys
- Intermetallics and Advanced Alloy Properties
- Perovskite Materials and Applications
- Chemical and Physical Properties of Materials
- Solid-state spectroscopy and crystallography
- Hydrogen Storage and Materials
- Metallurgical and Alloy Processes
- Theoretical and Computational Physics
- Nanomaterials for catalytic reactions
- Acoustic Wave Resonator Technologies
University of Genoa
2016-2025
Centers for Disease Control and Prevention
2025
Pace University
2025
Industriale Chimica (Italy)
1998-2024
Marche Polytechnic University
2014-2022
Superconducting and other Innovative Materials and Devices Institute
2010-2020
Azienda Ospedaliero Universitaria Ospedali Riuniti
2013-2014
Azienda USL di Bologna
2009-2013
Western Regional Hospital
2012
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2000-2009
We show here the first colloidal synthesis of double perovskite Cs2AgInCl6 nanocrystals (NCs) with a control over their size distribution. In our approach, metal carboxylate precursors and ligands (oleylamine oleic acid) are dissolved in diphenyl ether reacted at 105 °C benzoyl chloride. The resulting NCs exhibit expected crystal structure, stable under air, broad spectrum white photoluminescence (PL) quantum yield ∼1.6 ± 1%. optical properties these were improved by synthesizing Mn-doped...
We report the composition-dependent optical properties of Bi-doped Cs2Ag1–xNaxInCl6 nanocrystals (NCs) having a double perovskite crystal structure. Their photoluminescence (PL) was characterized by large Stokes shift, and PL quantum yield increased with amount Na up to ∼22% for Cs2Ag0.4Na0.6InCl6 stoichiometry. The presence Bi3+ dopants crucial achieve high yields (PLQYs) as nondoped NC systems were not emissive. Density functional theory calculations revealed that substitution Ag+ Na+...
Perovskite-related Cs4PbBr6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr6]4– octahedra do not share any corners. We show in this work that these can be converted into "three-dimensional" CsPbBr3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties become highly photoluminescent. The CsBr achieved either thermal annealing (physical approach) or chemical reaction with Prussian Blue (chemical approach)....
CoFe2O4 nanoparticles (〈DNPD〉 ∼ 6 nm), prepared by a thermal decomposition technique, have been investigated through the combined use of dc magnetization measurements, neutron diffraction, and 57Fe Mössbauer spectrometry under high applied magnetic field. Despite small particle size, value saturation at 300 K (Ms ≅ 70 A m2 kg−1) 5 100 are rather close to bulk values, making samples with this method attractive for biomedical applications. Neutron diffraction measurements indicate typical...
CsPbBr3 nanocrystals passivated with short molecular ligands and deposited on a substrate were annealed from room temperature to 400 °C in inert atmosphere. Chemical, structural, morphological transformations monitored situ ex by different techniques, while optoelectronic properties of the film also assessed. Annealing at 100 resulted 1 order magnitude increase photocurrent photoresponse as result partial sintering NCs residual solvent evaporation. Beyond 150 original orthorhombic partially...
Abstract Alginate is a naturally occurring polysaccharide commonly derived from brown algae cell walls which possesses unique features that make it extremely promising for several biomedical and pharmaceutical purposes. biomaterials are indeed nowadays gaining increasing interest in drug delivery tissue engineering applications owing to their intrinsic biocompatibility, non‐toxicity, versatility, low cost, ease of functionalization. Specifically, alginate‐based nanostructures show enhanced...
Administration of exogenous interleukin-1 receptor antago- nist (IL-ira) is effective in reducing the severity disease animal models acute inflammation.However, func- tion endogenous IL-ira this process, not yet known.We investigated pathophysiological role a rabbit model formalin-immune complex colitis.This has previously been shown to be IL-1 mediated and reduction observed with treatment.Colonic IL-lra was found elevated subsequent IL-1, exceeded levels 10-fold.Peak preceded both...
The aim of our study was to compare the efficacy and safety oral mesalazine with suppositories in patients active ulcerative proctitis.A four-week, randomized, single-blind trial performed 58 active, histologically confirmed proctitis (< or = 15 cm) evaluate 800-mg tablets taken three times per day (n 29) compared 400 mg administered 29). Patients were evaluated at entry after two four weeks. Efficacy evaluations included a disease activity index, which represents score variables: stools...
We measure magnetotransport of F-doped SmFeAsO samples up to 28 T and we extract the upper critical fields, using different criteria. In order circumvent problem criterion-dependent ${H}_{c2}$ values, suggest a thermodynamic estimation field slope $d{H}_{c2}/dT$ based on analysis conductivity fluctuations in regime. A high as large $\ensuremath{-}12\text{ }\text{T}/\text{K}$ is thus extracted for optimally doped sample. find evidence two-dimensional lowest Landau level (LLL) scaling applied...
Phase‐pure CsSnI 3 , FASnI Cs(PbSn)I FA(PbSn)I perovskites (FA = formamidinium HC(NH 2 ) + as well the analogous so‐called vacancy‐ordered double Cs SnI 6 and FA are mechanochemically synthesized. The addition of SnF is found to be crucial for synthesis Cs‐containing but unnecessary hybrid ones. All compounds show an absorption onset in near‐infrared (NIR) region, which makes them especially relevant photovoltaic applications. Pb(II) improve electronic properties 3D Sn(II)‐based perovskites,...
The nature of the phase transformation occurring in YBa2Cu3O7-x at 240 K has been investigated by internal friction and frequency measurements. hysteresis (elastic constants) reveals a slow kinetics, nonrecoverable raise dissipation around generated thermal cycling is attributed to nonelastic accommodation 2nd-phase misfitting domains. A model proposed interpret observed phenomenology unstable enhancements Tc above 100 reported literature. According this model, local are caused strains...
The first measurement of anelastic relaxation in a vibrating sample $\mathrm{Y}{\mathrm{Ba}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}x}$ is reported. A marked drop the dissipation observed below ${T}_{c}$, from which strong electron-phonon interaction inferred. It found that Bardeen-Cooper-Schrieffer theory with gap $\frac{\ensuremath{\Delta}}{{K}_{B}}=240$ K can explain this drop. data also suggest occurrence phase transition at 235 K.
SmFeAsO and the isostructural superconducting SmFeAs(O0.93F0.07) phase were prepared characterized by means of Rietveld refinement x-ray powder diffraction data, scanning electron microscope observation, transmission analysis, resistivity magnetization measurements. Sintering treatment strongly improves grain connectivity, but, on other hand, induces a competition between thermodynamic stability oxy-pnictide Sm2O3, thus affecting sample purity. In pristine both measurements clearly indicate...
The influence of titanium dioxide nanoparticles (pure anatase and 15% N doped anatase) on the growth Chlorella vulgaris, Haematococcus pluvialis, Arthrospira platensis was investigated. Results showed that pure can lead to a significant inhibition C. vulgaris A. (17.0 74.1%, resp.), while for H. pluvialis do not cause inhibition. Since in these stress conditions photosynthetic microorganisms produce antioxidant compounds order prevent cell damages, we evaluated polyphenols content either...
Nanostructured carbon thin films have been produced by deposition of supersonic cluster beams. The clusters are generated a pulsed arc ion source modified in order to achieve high fluxes and stability. Scanning electron microscopy, Raman, optical spectroscopy show that the low density network nanometer-size particles. nature is essentially graphite-like with large number distorted bonds. formation structures based on sp3 bondings not observed. use beam for synthesis nanocrystalline discussed.