Search Results - "Ravelli, L"
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Identification of A- and B-site cation vacancy defects in perovskite oxide thin films
Published in Physical review letters (26-11-2010)“…Cation vacancies on both sublattices (V(Ti), V(Sr)) have been identified in homoepitaxial pulsed laser deposited SrTiO3 films using high intensity variable…”
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2
Structural evolution and medium range order in permanently densified vitreous SiO2
Published in Physical review letters (31-01-2014)“…Positron annihilation lifetime spectroscopy is employed to measure the size of the interstitial void spaces characterizing the structure of a set of…”
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3
Aging and Free Volume in a Polymer of Intrinsic Microporosity (PIM-1)
Published in The Journal of adhesion (01-07-2012)“…There is a growing market for polymeric gas separation membranes for applications such as air separation and carbon dioxide capture. One of the key properties…”
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4
Interphase of a Polymer at a Solid Interface
Published in Macromolecules (09-12-2014)“…Atomistic molecular dynamics simulations of a chemically realistic model of atactic short-chain polystyrene between gold surfaces (111) and positron…”
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5
Suppression of vacancy defects in epitaxial La-doped SrTiO3 films
Published in Applied physics letters (05-12-2011)“…Variable energy positron annihilation lifetime spectroscopy of high-mobility La-doped SrTiO3 grown by molecular beam epitaxy found that the films contained…”
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6
Niobium aggregation and vacancylike defect evolution in nanostructured Nb-doped Mg: Their role in the kinetics of the hydride-to-metal phase transformation
Published in Physical review. B, Condensed matter and materials physics (18-06-2012)“…The structural evolution of nanostructured Nb-doped magnesium film samples and its correlation with the change of the H[sub 2] desorption kinetics after…”
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7
Towards the first measurement of matter-antimatter gravitational interaction
Published in EPJ Web of conferences (01-01-2018)“…The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is a CERN based experiment with the central aim to measure directly the gravitational…”
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Journal Article Conference Proceeding -
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Study of defects in implanted silica glass by depth profiling Positron Annihilation Spectroscopy
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-10-2010)“…Positron Annihilation Spectroscopy (PAS) performed with continuous and pulsed positron beams allows to characterize the size of the intrinsic nano-voids in…”
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9
Surfaces of colloidal PbSe nanocrystals probed by thin-film positron annihilation spectroscopy
Published in APL materials (01-08-2013)“…Positron annihilation lifetime spectroscopy and positron-electron momentum density (PEMD) studies on multilayers of PbSe nanocrystals (NCs), supported by…”
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10
In-vacancies in Si-doped InN
Published in Physica status solidi. A, Applications and materials science (01-05-2010)“…The introduction of vacancy type point defects by Si doping in InN grown by plasma‐assisted molecular beam epitaxy was studied using a monoenergetic positron…”
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Probing antimatter gravity – The AEGIS experiment at CERN
Published in EPJ Web of conferences (01-01-2016)“…The weak equivalence principle states that the motion of a body in a gravitational field is independent of its structure or composition. This postulate of…”
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12
Experiments with low-energy antimatter
Published in EPJ Web of conferences (01-01-2015)“…Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is…”
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13
Differential Phase Change Memory (PCM) Cell for Drift-Compensated In-Memory Computing
Published in IEEE transactions on electron devices (25-10-2024)“…Phase change memory (PCM) is a scalable, reliable, and robust technology for embedded and stand-alone memory device. PCM has also been extensively demonstrated…”
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14
Laser excitation of the n=3 level of positronium for antihydrogen production
Published in Physical review. A, Atomic, molecular, and optical physics (07-07-2016)“…We demonstrate the laser excitation of the n=3 state of positronium (Ps) in vacuum. A combination of a specially designed pulsed slow positron beam and a…”
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15
Suppression of vacancy defects in epitaxial La-doped SrTiO 3 films
Published in Applied physics letters (06-12-2011)“…Variable energy positron annihilation lifetime spectroscopy of high-mobility La-doped SrTiO 3 grown by molecular beam epitaxy found that the films contained…”
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16
Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-11-2015)“…We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the…”
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17
Structural Evolution and Medium Range Order in Permanently Densified Vitreous SiO sub(2)
Published in Physical review letters (31-01-2014)“…Positron annihilation lifetime spectroscopy is employed to measure the size of the interstitial void spaces characterizing the structure of a set of…”
Get full text
Journal Article -
18
Structural Evolution and Medium Range Order in Permanently Densified Vitreous SiO 2
Published in Physical review letters (01-01-2014)Get full text
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19
Suppression of vacancy defects in epitaxial La-doped SrTiO{sub 3} films
Published in Applied physics letters (05-12-2011)“…Variable energy positron annihilation lifetime spectroscopy of high-mobility La-doped SrTiO{sub 3} grown by molecular beam epitaxy found that the films…”
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Journal Article -
20
Characterization of a transmission positron/positronium converter for antihydrogen production
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-09-2017)“…In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of…”
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