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Metal-Halide Perovskite Submicrometer-Thick Films for Ultra-Stable Self-Powered direct X-ray detectors

Nano-Micro Letters 2024年第9期16卷 410-431页

作者： Marco Girolami Fabio Matteocci Sara Pettinato Valerio Serpente Eleonora Bolli Barbara Paci Amanda Generosi Stefano Salvatori Aldo di Carlo daniele M.Trucchi cnr‑ISM Consiglio Nazionale delle RicercheIstituto di Struttura della MateriaSede Secondaria di MontelibrettiDiaTHEMA LabStrada Provinciale 35D900010 MontelibrettiRomeItaly CHOSE–Centre for Hybrid and Organic Solar Energy Department of Electronic EngineeringUniversity of Rome“Tor Vergata”Via del Politecnico 100133 RomeItaly Faculty of Engineering Universita degli Studi Niccolo CusanoVia don Carlo Gnocchi 300166 RomeItaly SpecXLab CNR‑ISMConsiglio Nazionale Delle RicercheIstituto di Struttura Della MateriaArea della Ricerca di Tor VergataVia del Fosso del Cavaliere 10000133 RomeItaly

Metal-halide perovskites are revolutionizing the world of X-ray detectors,due to the development of sensitive,fast,and cost-effective ***-powered operation,ensuring portability and low power consumption,has also been recently demonstrated in both bulk materials and thin ***,the signal stability a.d.r.peatability under continuous X-ray exposure has only been tested up to a few hours,often reporting degradation of the detection *** it is shown that self-powered direct X-ray detectors,fabricated starting from a FAPbBr_(3)submicrometer-thick film deposition onto a mesoporous TiO_(2)scaffold,can withstand a 26-day uninterrupted X-ray exposure with negligible signal loss,demonstrating ultra-high operational stability and excellent *** structural modification is observed after irradiation with a total ionizing dose of almost 200 Gy,revealing an unexpectedly high radiation hardness for a metal-halide perovskite thin *** addition,trap-assisted photoconductive gain enabled the device to achieve a record bulk sensitivity of 7.28 C Gy^(−1)cm^(−3)at 0 V,an unprecedented value in the field of thin-film-based photoconductors and photodiodes for“hard”***,prototypal validation under the X-ray beam produced by a medical linear accelerator for cancer treatment is also introduced.

关键词： Metal-halide perovskite thin films direct X-ray detectors Self-powered devices Operational stability Medical linear accelerator

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Polarization Study of Swift J151857.0–572147 with IXPE Observation

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research in Astronomy and Astrophysics 2024年第9期24卷 60-65页

作者： Yu-Shan Ling Fei Xie Ming-Yu Ge Fabio La Monaca Guangxi Key Laboratory for relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China INAF istituto di Astrofisica e Planetologia Spaziali Via del Fosso del Cavaliere 10000133 RomaItaly dipartimento di Fisica Universitàdegli Studi di Roma“Tor Vergata”Via della Ricerca Scientifica 100133 RomaItaly dipartimento di Fisica Universitàdegli Studi di Roma“La Sapienza”Piazzale Aldo Moro 500185 RomaItaly

We present an analysis of the Imaging X-ray Polarimetry Explorer observation from a newly discovered transient source:Swift *** obtained polarization degree(Pd)and angle are 0.3%±0.3% and -24°±26°respectively in 2-8 keV within 68%confidence level errors,and polarization results are below MdP99in all energy bins,with the upper limit on Pd of 0.8% in the 2-8 keV energy *** quasi-periodic oscillations(QPOs)are detected in this *** polarization and QPO analyses support the hypothesis that the source was in the high soft state,and the results are consistent with predictions for a thin accretion disk model.

关键词： stars:black holes polarization X-rays:bursts

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radioisotope production using lasers:From basic science to applications

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Matter a.d.r.diation at Extremes 2024年第3期9卷 31-44页

作者： M.r.d.rodrigues A.Bonasera M.Scisciò J.A.Pérez-Hernández M.Ehret F.Filippi P.L.Andreoli M.Huault H.Larreur d.Singappuli d.Molloy d.raffestin M.Alonzo G.G.rapisarda d.Lattuada G.L.Guardo C.Verona Fe.Consoli G.Petringa A.McNamee M.La Cognata S.Palmerini T.Carriere M.Cipriani G.di Giorgio G.Cristofari r.de Angelis G.A.P.Cirrone d.Margarone L.Giuffrida d.Batani P.Nicolai K.Batani r.Lera L.Volpe d.Giulietti S.Agarwal M.Krupka S.Singh Fa.Consoli Cyclotron Institute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de Láseres Pulsados(clpu) VillamayorSpain Universidad de Salamanca SalamancaSpain Centre Lasers Intenses et Applications(CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings Pty FreshwaterNew South WalesAustralia School of Mathematics and Physics Queen’s University BelfastBelfastUnited Kingdom dipartimento di Fisica e Astronomia“E.Majorana ”Università di CataniaCataniaItaly Facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly dipartimento di Ingegneria Industriale Universitàdi Roma“Tor Vergata”RomaItaly dipartimento di Fisica e Geologia Universitàdegli Studi di PerugiaPerugiaItaly istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETSIA Universidad Politécnica de MadridMadridSpain dipartimento Fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Institute of Physics of Czech Academy of Sciences PragueCzech Republic Institute of Plasma Physics of Czech Academy of Sciences PragueCzech Republic

The discovery of chirped pulse amplification has led to great improvements in laser technology,enabling energetic laser beams to be compressed to pulse durations of tens of femtoseconds and focused to a few *** with energies of tens of MeV can be accelerated using,for instance,target normal sheath acceleration and focused on secondary *** such conditions,nuclear reactions can occur,with the production of radioisotopes suitable for medical *** use of high-repetition lasers to produce such isotopes is competitive with conventional methods mostly based on *** this paper,we study the production of^(67)Cu,^(63)Zn,^(18)F,and^(11)C,which are currently used in positron emission tomography and other *** the same time,we study the reactions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)Ga to put further constraints on the proton distributions at different angles,as well as the reaction^(11)B(p,α)^(8)Be relevant for energy *** experiment was performed at the 1 PW laser facility at VegaⅢin Salamanca,*** distributions of radioisotopes in the forward(with respect to the laser direction)and backward directions were measured using a high purity germanium *** results are in reasonable agreement with numerical estimates obtained following the approach of Kimura and Bonasera[*** ***.,Sect.A 637,164–170(2011)].

关键词： purity estimates backward

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Primordial black hole mass functions as a probe of cosmic origin

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 164-171页

作者： Yi-Fu Cai Chengfeng Tang Geyu Mo Sheng-Feng Yan Chao Chen Xiao-Han Ma Bo Wang Wentao Luo damien A.Easson Antonino Marcianò deep Space Exploration Laboratory/School of Physical Sciences University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory for researches in Galaxies and Cosmology/department of Astronomy School of Astronomy and Space ScienceUniversity of Science and Technology of ChinaHefei 230026China istituto Nazionale di Fisica Nucleare(INFN) Sezione di MilanoMilano 20146Italy diSAT Universitàdegli Studi dell'InsubriaComo 22100Italy Jockey Club Institute for Advanced Study The Hong Kong University of Science and TechnologyHong KongChina department of Physics Arizona State UniversityTempe 85287-1504USA department of Physics&Center for Field Theory and Particle Physics Fudan UniversityShanghai 200433China Laboratori Nazionali di Frascati INFN Via Enrico Fermi 541 Frascati(Roma)00044Italy INFN sezione roma Tor Vergata Rome I-00133Italy School of Physics University of Electronic Science and Technology of ChinaChengdu11731China

We discuss a novel window to probe the origin of our universe via the mass functions of primordial black holes(PBHs).The mass functions of PBHs are simply estimated using the conventional Press-Schechter formalism for two paradigms of cosmic origin,including inflationaryΛCdM and bounce *** sta.d.r. inflationaryΛCdM model cannot generate an appreciable number of massive PBHs;however,non-trivial inflation models with blue-tilted power spectra at small scales and matter bounce cosmology provide formation mechanisms for heavy PBHs,which in turn,may seed the observed supermassive black holes(SMBHs).By fitting the SMBH mass functions at high redshift(z~6)derived from Sloan digital Sky Survey(SdSS)and Canada-France High-z Quasar Survey(CFHQS)quasars,for two paradigms of cosmic origin,we derive constraints on the PBH density fraction fPBHat z~6 and the characteristic mass M_(★),with the prior assumption that all SMBHs stem from *** demonstrate that this newly proposed procedure,relying on astronomical measurements that utilize deep-field surveys of SMBHs at high redshift,can be used to constrain models of cosmic ***,although not the main focus of this paper,we evolve the mass function from z~6 to z~0 through an assumption of 3×10^(8)-year Eddington’s accretion,and give a rough estimation of fPBHat z~0.

关键词： origin cosmic massive

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Large earthquakes along slow converging plate margins:Calabrian Arc paleoseismicity based on the submarine turbidite record

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Geoscience Frontiers 2023年第5期14卷 241-266页

作者： A.Polonia r.Melis P.Galli E.Colizza d.d.Insinga L.Gasperini istituto di Scienze Marine(ISMAr-cnr) Consiglio Nazionale delle RicercheArea della Ricerca di BolognaItaly dipartimento di Matematica e Geoscienze Universitàdegli Studi di TriesteItaly Presidenza del Consiglio dei Ministri Dipartimento della Protezione CivileServizio Rischio Sismico-RomaItaly

The Calabrian Arc subduction-rollback system hosts seismogenic faults capable of generating earthquakes exceeding magnitude *** earthquakes are the result of long-term geodynamic processes,documenting seismic activity during a sufficiently long time interval is of fundamental importance for hazard *** and historical data provide critical information on seismogenesis,but they cover time periods shorter than the recurrence times of large earthquakes,especially in areas with low deformation rates such as *** onshore paleoseismological studies are fundamental to compile earthquake catalogs,they are sometime affected by the relatively poor continuity of sedimentation in the subaerial *** this study we applied the paleoseismological approach to the submarine environment to reconstruct the record of high-energy sedimentary events triggered by seismic *** analyzed three gravity cores collected in disconnected sedimentary basins to reconstruct resedimentation processes during the Holocene,integrating inland information for a better assessment of tectonic activity and *** analyses of the sedimentary record constrained by radiometric dating allowed reconstructing event stratigraphy and linking resedimented deposits to specific *** and offshore data allow to identify large-magnitude earthquakes in the central Calabrian Arc subduction system during the Holocene,with inferred epicenters located either along normal faults onshore and/or related to the slab *** turbidite record reveals 20 major events during the last 10 ka,with sources including crustal faults in Calabria(***,rossano and Cittanova faults).Analyses of sediment samples and high-resolution seismic reflection images allowed identification of different types of resedimented deposits during the last 30–50 *** basin-wide occurrence of three megaturbidites/homogenites suggests they are related to megatsunamis sourced by

关键词： Calabrian Arc Earthquakes Seismic shaking Sedimentation Seismo-turbidites

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Efficient GW calculations in two dimensional materials through a stochastic integration of the screened potential

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npj Computational materials 2023年第1期9卷 1912-1919页

作者： Alberto Guandalini Pino d’Amico Andrea Ferretti daniele Varsano S3 Centre Istituto NanoscienzeCNRVia Campi 213/aModenaItaly Present address:dipartimento di Fisica Universitàdi Roma La SapienzaPiazzale Aldo Moro 5I-00185 RomaItaly

Many-body perturbation theory methods,such as the G0W0 approximation,are able to accurately predict quasiparticle(QP)properties of several classes of ***,the calculation of the QP band structure of two-dimensional(2d)semiconductors is known to require a very dense BZ sampling,due to the sharp q-dependence of the dielectric matrix in the long-wavelength limit(q→0).In this work,we show how the convergence of the QP corrections of 2d semiconductors with respect to the BZ sampling can be drastically improved,by combining a Monte Carlo integration with an interpolation scheme able to represent the screened potential between the calculated grid *** method has been validated by computing the band gap of three different prototype monolayer materials:a transition metal dichalcogenide(MoS2),a wide band gap insulator(hBN)and an anisotropic semiconductor(phosphorene).The proposed scheme shows that the convergence of the gap for these three materials up to 50meV is achieved by using k-point grids comparable to those needed by dFT calculations,while keeping the grid uniform.

关键词： materials integration potential

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*** volcano high-resolution topography:airborne LidAr modelling validated by GPS data

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International Journal of digital Earth 2016年第7期9卷 710-732页

作者： Marina Bisson Claudia Spinetti Marco Neri Alessandro Bonforte istituto Nazionale di Geofisica e Vulcanologia via della Faggiola 32PisaItaly istituto Nazionale di Geofisica e Vulcanologia Centro Nazionale Terremotivia di Vigna MurataRomeItaly istituto Nazionale di Geofisica e Vulcanologia Sezione di CataniaOsservatorio EtneoPiazza RomaCataniaItaly

High-resolution digital topography is essential for land management and planning in any type of territory as well as the reproduction of the Earth surface in a geocoded digital format that allows several digital Earth *** a volcanic environment,digital Elevation Models are a valid reference for multi-temporal analyses aimed to observe frequent changes of a volcano edifice and for the relative detailed morphological and structural *** the first time,a dTM(digital Terrain Model)and a dSM(digital Surface Model)covering the entire *** volcano(Italy)derived from the same airborne Light detection a.d.r.nging(LidAr)are here *** than 250 million 3d LidAr points have been processed to distinguish ground elements from natural and anthropic *** end product is the highly accurate representation of *** landscape(dSM)and ground topography(dTM)dated *** models have a high spatial resolution of 2 m and cover an area of 620 *** dTM has been validated by GPS ground control *** vertical accuracy has been evaluated,resulting in a root-mean-square-error of±0.24 *** dTM is available as electronic supplement a.d.r.presents a valid support for various scientific studies.

关键词： Airborne LidAr GPS dEM Mt.Etna

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Biocompatibility of biphasic α,β-tricalcium phosphate ceramics in vitro

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Bioactive materials 2020年第2期5卷 423-427页

作者： T.V.Safronova I.I.Selezneva S.A.Tikhonova A.S.Kiselev G.A.davydova T.B.Shatalova d.S.Larionov J.V.rau Lomonosov Moscow State University Leninskie Gory1Moscow119991Russia Institute of Theoretical and Experimental Biophysics Russian Academy of SciencesPushchino142292Moscow RegionRussia istituto di struttura della materia Consiglio Nazionale Delle Ricerche(ISM-CNR)Via Del Fosso Del Cavaliere 10000133RomeItaly

The biocompatibility of biphasicα,β-tricalcium phosphate ceramics,obtained by annealing a compact preform based onβ-tricalcium phosphate powder,was studied in *** was found that within 10–30 days the adhesion of primary dental pulp stem cells located on the surface of biphasicα,β-tricalcium phosphate ceramics is *** of the cell number on the surface of biphasicα,β-tricalcium phosphate ceramics,most likely,can be associated with both the pH level(acidic)as a result of hydrolysis of the more soluble phase ofα-tricalcium phosphate and with the nature of surface that changes as a result of the formation and growth of hydroxyapatite crystals.

关键词： Tricalcium phosphate Ceramics Phase composition dental pulp stem cells Biocompatibility

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Colloidal forming of macroporous calcium pyrophosphate bioceramics in 3d-printed molds

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Bioactive materials 2020年第2期5卷 309-317页

作者： Ya.Yu Filippov E.d.Orlov E.S.Klimashina P.V.Evdokimov T.V.Safronova V.I.Putlayev J.V.rau department of materials Science Lomonosov Moscow State UniversityMoscowRussia Institute of Mechanics research Lomonosov Moscow State UniversityMoscowRussia department of Chemistry Lomonosov Moscow State UniversityMoscowRussia istituto di struttura della materia Consiglio Nazionale delle Ricerche(ISM-CNR)Via del Fosso del Cavaliere 10000133RomeItaly

A technique for colloidal forming of Ca2P2O7 macroporous bioceramics,based on low-pressure injection molding(LPIM)of a glycerol-water slip containing Ca2P2O7 and Ca(Н2PO4)2 into a plastic mold fabricated via FdM 3dprinting,was *** reaction between the solid phases of the water containing slip-Ca2P2O7 and Ca(Н2PO4)2,resulting in brushite(CaHPO4·2H2O)formation,led to consolidation of the casting and preserved its complex architecture in the course of mold *** ceramics of Kelvin structure(70%macropores with the sizes from 2 up to 4 mm),based on a pre-defined composition with 10 wt%Ca(PO3)2 and sintered in liquid-phase regime,demonstrated a compressive strength of 1.4±0.1 MPa at a density of 22±2%.In vitro tests on bioactivity in SBF solution,as well as on resorption of the ceramics in model solution of citric acid,were carried out.

关键词： Bioceramics Calcium pyrophosphate Calcium metaphosphate Colloidal forming 3d-printing Kelvin structure

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Modification of titanium surface via Ag-,Sr-and Si-containing micro-arc calcium phosphate coating

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Bioactive materials 2019年第1期4卷 224-235页

作者： Mariya B.Sedelnikova Ekaterina G.Komarova Yurii P.Sharkeev Anna V.Ugodchikova Tatiana V.Tolkacheva Julietta V.rau Evgeny E.Buyko Vladimir V.Ivanov Vladimir V.Sheikin Institute of Strength Physics and materials Science of SB rAS Academicheskii Prospect 2/4Tomsk634055Russia National research Tomsk Polytechnic University Lenina Prospect 30Tomsk634050Russia istituto di struttura della materia Consiglio Nazionale delle Ricerche(ISM-CNR)Via del Fosso del Cavaliere 10000133 RomaItaly Siberian State Medical University Moscovskii Tract 2Tomsk634050Russia

The current research is devoted to the study of the modification of the titanium implants by the micro-arc oxidation with bioactive calcium phosphate coatings containing Ag or Sr and Si *** coatings’microstructure,phase composition,morphology,physicochemical and biological properties were examined by scanning electron microscopy(SEM),transmission electron microscopy(TEM),energy-dispersive X-ray spectroscopy(EdX)and X-ray diffraction(Xrd).Ag-containing and Sr-Si-incorporated coatings were formed in alkaline and acid electrolytes,*** formation of the coatings occurred at different ranges of the applied voltages,which led to the significant difference in the coatings *** trace elements Ag,Sr and Si participated intensively in the plasma-chemical reactions of the micro-arc coatings ***-containing coatings demonstrated strong antibacterial effect against Staphylococcus aureus AТСС*** in vitro test with 3T3-L1 fibroblasts showed no cytotoxicity appearance on Sr-Si-incorporated coatings.

关键词： Trace elements Biocoatings Micro-arc oxidation Titanium substrate Antibacterial activity

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