A5036047695- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Mineralogy and Gemology Studies
- Chalcogenide Semiconductor Thin Films
- Silicon Nanostructures and Photoluminescence
- Geological and Geochemical Analysis
- Advancements in Battery Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Solid-state spectroscopy and crystallography
- Semiconductor materials and devices
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Ion-surface interactions and analysis
- Microwave Dielectric Ceramics Synthesis
- Microfluidic and Capillary Electrophoresis Applications
- Semiconductor materials and interfaces
- Quantum Dots Synthesis And Properties
- Fuel Cells and Related Materials
- Silicon and Solar Cell Technologies
- Graphene research and applications
- Drug Solubulity and Delivery Systems
- Integrated Circuits and Semiconductor Failure Analysis
- Photorefractive and Nonlinear Optics
- Material Dynamics and Properties
- Electrocatalysts for Energy Conversion
University of Verona
2014-2023
University of Padua
2012
University of Calabria
2010
Vibrational properties of anatase titanium dioxide single crystal are thoroughly investigated by means both experimental and theoretical approaches. Polarized Raman-scattering experiments were carried out at room temperature in backscattering geometry on a microcrystalline sample under different orientations set micromanipulator. All the independent components polarizability tensor separately obtained. In particular, it was possible to evidence, turn, ${\text{A}}_{1g}$ mode, thus...
Colloidal Er3+/Yb3+, Tm3+/Yb3+ and Ho3+/Yb3+ doped CaF2 nanoparticles have been prepared by a one-pot hydrothermal procedure their upconversion properties investigated.
Abstract The presence of high crystallographic symmetry and nanoscale defects are favorable for thermoelectrics. With proper electronic structures, a highly symmetric crystal tends to possess multiple carrier channels promote electrical conductivity without sacrificing Seebeck coefficient. In addition, can effectively scatter acoustic phonons suppress thermal conductivity. Here, it is reported that the triple doping Cu 2 SnSe 3 leads ZT value 1.6 at 823 K 1.85 Ag 0.15 (Sn 0.88 Ga 0.1 Na 0.02...
Nanocrystalline Lu 3 Ga 5 O 12 , with average particle sizes of 40 nm, doped a wide variety luminescent trivalent lanthanide ions have been prepared using sol-gel technique.The structural and morphological properties the powders investigated by x-ray powder diffraction, high resolution transmission electron microscopy Raman spectroscopy.Structural data refined are presented for Pr 3+ Eu Gd Ho Er Tm dopants, while room temperature excited luminescence spectra emission decay curves -, -and...
An integrated experimental approach, based on inelastic light-scattering techniques, has been here employed for a multilength scale characterization of networking properties cyclodextrin nanosponges, new class cross-linked polymeric materials built up from natural oligosaccharides cyclodextrins. By using Raman and Brillouin scattering experiments, we performed detailed inspection the vibrational dynamics these polymers over wide frequency window ranging gigahertz to terahertz, with aim...
Small single crystals of NASICON-type LiTi2(PO4)3 high quality were grown by means long-term annealing polycrystalline specimens synthesized using conventional solid state reaction. A thorough study their structural properties and vibrational dynamics was carried out an integrated experimental theoretical approach. single-crystal X-ray diffraction analysis at room temperature allowed us to determine the precise crystal structure anisotropic displacement parameters all atoms. In addition, 25...
Abstract There is a growing interest in co-encapsulating multiple species to harness potential synergy between them, enhance their stability and efficacy various products. The aim of this work was co-encapsulate vitamin D 3 rutin inside chitosan-zein microparticles using simple easily scalable process for food fortification. This achieved via anti-solvent precipitation coupled with spray-drying. Free-flowing powders spherical wrinkled surface particle size < 10 μm were obtained....
Undoped, Ce3+, Pr3+ and Eu3+ doped lutetium oxyfluoride submicrometre powders have been prepared by a simple coprecipitation procedure in water. The synthesized samples are Vernier single phases with stoichiometry assigned to Lu10O9F12, as demonstrated X-ray powder diffraction. structural disorder of the host matrix significantly affects optical emission spectra lanthanide well their vibrational spectra. observed bandwidths FTIR spectrum Raman scattering undoped sample consistent very...
The vibrational dynamics of a new class cross‐linked polymers obtained from both native and modified cyclodextrin, referred to as cyclodextrin nanosponges, is here investigated. main purpose spot the structure these materials at molecular level unlikely be characterized by diffraction methods due low or null degree crystallinity. analysis spectral features bands observed between 1650 1800 cm −1 in Raman infrared spectra, assigned carbonyl stretching modes polymeric network, performed using...
Ultrafast optical-domain spectroscopies allow to monitor in real time the motion of nuclei molecules. Achieving element-selectivity had await advent resolved X-ray spectroscopy, which is now commonly carried at free electron lasers. However, detecting light element that are encountered organic molecules, remained elusive due need work under vacuum. Here, we present an impulsive stimulated Raman scattering (ISRS) pump/carbon K-edge absorption probe investigation, allowed observation...
This work reports the peculiar properties of a graphene film prepared by chemical vapor deposition ethylene in high vacuum on well oriented and carefully cleaned Pt(111) crystal surface maintained at temperature. In‐situ ex‐situ characterization techniques (low‐energy electron diffraction, high‐resolution energy loss spectroscopy, scanning microscopy Raman micro‐spectroscopy) used here indicate prevalence single‐layer regions presence two different orientations sheets with respect to...
A thorough study of the vibrational dynamics xenotime YPO${}_{4}$ and its isomorphs, pretulite ScPO${}_{4}$ single crystals, with tetragonal zircon structure, was carried out by means an integrated approach consisting both polarized micro-Raman scattering spectroscopy first-principles calculations. Polarized Raman experiments were performed at room temperature either in 180${}^{\ifmmode^\circ\else\textdegree\fi{}}$ or 90${}^{\ifmmode^\circ\else\textdegree\fi{}}$ geometry on samples under...
The vibrational dynamics of a new class cross-linked polymers made up cyclodextrins is here investigated in the microscopic range by joint use light and inelastic neutron scattering experiments. effect increasing connectivity polymeric network on system studied exploiting complementarity these two different probes. derived densities states evidence presence characteristic anomalous excess modes with respect to Debye level, already observed low-frequency Raman spectra referred as boson peak...
A large number of nano-sized oxides have been studied in the literature as fillers for polymeric membranes, such Nafion®. Superacidic sulfated proposed and characterized. Once incorporated into polymer matrices, their beneficial effect on peculiar membrane properties has demonstrated. The alteration physical-chemical composite membranes roots intermolecular interaction between inorganic filler surface groups chains. In attempt to tackle this fundamental issue, here we discuss, by a...
Abstract The identification of mineralogical phases in drill cores is one the most challenging tasks mining activity view an efficient metal extraction. This process requires analytical characterization large volumes material to obtain a complete set data minimum time. None commonly used methods analyses, such as IR‐based techniques, X‐rays fluorescence, and hyperspectral imaging, capable provide fully satisfactory response for several reasons, main being complexity ores. Moreover, often...
The numerical modelling of magma transport and volcanic eruptions requires accurate knowledge the viscosity magmatic liquids as a function temperature melt composition. However, there is growing evidence that melts can be prone to nanoscale modification crystallization before during measurements. This challenges possibility being able quantify crystal-free phase contribution measured viscosity. In an effort establish alternative route derive based on vibrational properties their parental...