A5077936285- Muon and positron interactions and applications
- Graphene research and applications
- Atomic and Molecular Physics
- Polymer crystallization and properties
- Advancements in Battery Materials
- Membrane Separation and Gas Transport
- Chemical Synthesis and Characterization
- Ammonia Synthesis and Nitrogen Reduction
- Advanced NMR Techniques and Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Synthesis and characterization of novel inorganic/organometallic compounds
- Recycling and Waste Management Techniques
- Polymer Nanocomposites and Properties
- Cold Atom Physics and Bose-Einstein Condensates
- Ion-surface interactions and analysis
- Copper Interconnects and Reliability
- Superconducting Materials and Applications
- biodegradable polymer synthesis and properties
- Solid-state spectroscopy and crystallography
- Quantum and Classical Electrodynamics
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Mesoporous Materials and Catalysis
- Particle accelerators and beam dynamics
Politecnico di Milano
2013-2023
Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications
2019
University of Milan
1984-2011
Istituto Nazionale di Fisica Nucleare
2011
Institute for Nuclear Research
2011
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
2011
University of Pavia
2011
Istituto Nazionale per la Fisica della Materia
1996-2005
Centro Científico Tecnológico - San Juan
2004
Meeting the increasing demand of clean water requires development novel efficient adsorbent materials for removal organic pollutants. In this context use natural, renewable sources is special relevance and sepia melanin, thanks to its ability bind a variety inorganic species, has already attracted interest purification. Here we describe synthesis material obtained by combination melanin poly(ethylene-alt-maleic anhydride) (P(E-alt-MA)). Compared resulting hybrid displays high fast adsorption...
A systematic study on the evolution of free volume as a function temperature in vulcanized at 433 K natural rubber (NR) and styrene butadiene (SBR) 25-75, 50-50, 75-25 NR-SBR (percent content pure NR SBR, respectively) blends was studied by positron annihilation lifetime spectroscopy. All samples were prepared with sulfur TBBS (n-t-butyl-2-benzothiazole sulfenamide) accelerator. The glass transition temperatures determined differential scanning calorimetry (DSC) from data. In general,...
Abstract A coincidence between the temperature‐dependent hole (free volume) fraction h above glass transition temperature, derived from lattice‐hole theory, and corresponding function Ps obtained positronium lifetime spectroscopy has been previously observed for four polystyrene fractions ranging 4000 to 400,000 in molar mass. This result was based on assumed proportionality of product orthopositronium intensity I 3 mean cavity volume, constant C being mass dependent. However, a recent...
Positronium (Ps) formation measurements in several porous materials as: Vycor, germanate Xerogel, Metal-Organic Frameworks MOF-177 and Aerogel with two densities (20 150 mg/cm3), were performed by means of a variable energy positron beam provided Ge detector lifetime spectrometer. An efficient cooled Ps atoms is requisite for the production antihydrogen, aim direct measurement Earth gravitational acceleration g antimatter, which primary scientific goal AEGIS (Antimatter Experiment: Gravity,...
The formation of the antihydrogen beam in AEGIS experiment through use inhomogeneous electric fields is discussed and simulation results including geometry apparatus realistic hypothesis about initial conditions are shown. resulting velocity distribution matches requirements gravity experiment. In particular it shown that provide radial cooling during acceleration.
A characterization of some mineral and organophilic montmorillonites has been carried out using x-ray diffraction positron annihilation lifetime spectroscopy. The combination the two techniques supplies information on microscopic structure clays, in particular fraction interlayer gap which is occupied by water molecules clays. Nanocavities among cations quaternary ammonium salts inserted clays were also investigated compared with those existing free salt.
AEgIS (Antimatter experiment: gravity, interferometry, spectroscopy) is an experiment approved by CERN with the goal of studying antihydrogen physics. In AEgIS, will be produced charge exchange reactions cold antiprotons positronium atoms excited in a Rydberg state (n > 20). first phase experiment, controlled acceleration electric field gradient (Stark effect) and subsequent measurement free fall Moiré deflectometer allow test weak equivalence principle. second phase, slowed, confined,...
Positronium (Ps) has been the subject of several experimental and theoretical investigations due to its many scientific applications. In this work high positronium yield was found in engineered porous silica. The studied materials were pellets swollen MCM-41 commercial Davicat 1700, obtained by different compression pressures, with mesopores characterized structural chemical features. measurements performed a variable energy positron beam at room temperature. An estimation Ps mean diffusion...
We evaluate the potential energy of a He atom near an ionic surface by summing two-body as derived from molecular physics. Corrugation parameters and binding are for set four alkali halide surfaces compared to recent scattering data. Finally we comment on possibility performing crystallography crystals means scattering.