Zobrazeno 1 - 10 of 42 pro vyhledávání: '"Vittoria Pischedda"'
1
Effect of extreme mechanical densification on the electrical properties of carbon nanotube micro-yarns
Autor: Cassandre Miralaei, Sylvie Le Floch, Regis Debord, Hung V Nguyen, Julio C Da Silva, Alfonso San-Miguel, Hélène Le Poche, Stephane Pailhès, Vittoria Pischedda
Publikováno v: Nanotechnology
Nanotechnology, 2022, 33 (27), pp.275708. ⟨10.1088/1361-6528/ac6039⟩
We have explored the effect of high pressure post-treatment in optimizing the properties of carbon nanotube yarns and found that the application of dry hydrostatic pressure reduces porosity and enhances electrical properties. The CNT yarns were prepa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c19196e6107552f05350e8ac044415d
https://hal.science/hal-03654908
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2
A Multitechnique Study of Fluorinated Nanodiamonds for Low-Energy Neutron Physics Applications
Autor: Michela Brunelli, Chiara Cavallari, Marc Dubois, Nicolas Batisse, Valery Nesvizhevsky, S. Radescu, Vittoria Pischedda, Michael Herraiz
Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, American Chemical Society, 2020, 124 (26), pp.14229-14236. ⟨10.1021/acs.jpcc.0c03083⟩
The Journal of Physical Chemistry C
Journal of Physical Chemistry C, 2020, 124 (26), pp.14229-14236. ⟨10.1021/acs.jpcc.0c03083⟩
International audience; Data of quasi-specular reflection of cold neutrons, prompt-γ neutron analysis, X-ray Raman scattering (XRS), and neutron pair distribution function (PDF) analysis with powder of detonation nanodiamonds are analyzed to collect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb72c9dad14772b7479857cb6a537fe8
https://doi.org/10.1021/acs.jpcc.0c03083
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3
Isostructural phase transition by point defect reorganization in the binary type-I clathrate Ba7.5Si45
Autor: Holger Euchner, Vittoria Pischedda, Denis Machon, Alfonso San-Miguel, Patrice Mélinon, Stéphane Pailhès, Michael Hanfland, Régis Debord
Publikováno v: Acta Materialia
Acta Materialia, Elsevier, 2021, 210, pp.116824. ⟨10.1016/j.actamat.2021.116824⟩
International audience; Competition between microscopic point defect (vacancy and interstitial) configurations is inherent to crystalline phases of increased structural complexity. Phase transitions that preserve symmetry between them belong to a spe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee03238fc4330e98b23741a006a46f06
https://hal.archives-ouvertes.fr/hal-03227682
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4
Nanoscale Coal Deformation and Alteration of Porosity and Pore Orientation Under Uniaxial Compression: An In Situ SANS Study
Autor: Rui Zhang, Shimin Liu, Alfonso San-Miguel, Ralf Schweins, Sylvie Le Floch, Vittoria Pischedda
Publikováno v: Rock Mechanics and Rock Engineering
Rock Mechanics and Rock Engineering, Springer Verlag, 2021, 54, pp.3593-3608. ⟨10.1007/s00603-020-02321-x⟩
International audience; Nanoscale coal deformation affects thegeomechanics response of coal structure under external stress conditions. In this study, insitu small-angle neutron scattering (SANS) is used to characterize the evolution of nanopo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8baf8606e8f81f7b6bf72fe6f3ed4a19
https://hal.archives-ouvertes.fr/hal-03264208
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6
Tuning C–F Bonding of Graphite Fluoride by Applying High Pressure: Experimental and Theoretical Study
Autor: Nicolas Batisse, S. Radescu, H. Diaf, Chiara Cavallari, Marc Dubois, Vittoria Pischedda
Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, 2020, 124 (45), pp.24747-24755. ⟨10.1021/acs.jpcc.0c06860⟩
Journal of Physical Chemistry C, American Chemical Society, 2020, 124 (45), pp.24747-24755. ⟨10.1021/acs.jpcc.0c06860⟩
J.Phys.Chem.C
J.Phys.Chem.C, 2020, 124 (45), pp.24747-24755. ⟨10.1021/acs.jpcc.0c06860⟩
International audience; C 2 F graphite fluoride has a unique mutable structure when subjected to external applied pressure. In the present study, we examine C 2 F using X-ray Raman scattering (XRS) up to 6.5 GPa coupled with theoretical simulations.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e874fe0c2a461426e4b874362af3d78e
https://uca.hal.science/hal-03026142
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8
Revisiting Pressure-Induced Transitions in Mesoporous Anatase TiO2
Autor: Vittoria Pischedda, Denis Machon, Jérémie Margueritat, Laurence Bois, Quentin Martinet, Sylvie Le Floch, Alexis Forestier, Denis Morris, Lucien Saviot, Défi Jr.Jubgang Fandio
Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, American Chemical Society, 2019, 123 (38), pp.23488-23496. ⟨10.1021/acs.jpcc.9b05650⟩
International audience; Mesoporous materials may be considered as the negative image of a collection of nanoparticles. In both cases, the large surface area induces an increase of the system energy. Pressure-induced phase transitions are used to stud
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b04d943293312d366166f8aef045bb5e
https://hal.archives-ouvertes.fr/hal-02283188/file/20200520HAL.pdf
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9
Structural and electronic changes in graphite fluorides as a function of fluorination rate: An XRS, PDF and DFT study
Autor: Marc Dubois, Henry E. Fischer, Vittoria Pischedda, Nicolas Batisse, M. Vaughan, Michela Brunelli, Chiara Cavallari, S. Radescu
Publikováno v: Carbon
Carbon, Elsevier, 2019, 147, pp.1-8. ⟨10.1016/j.carbon.2019.02.053⟩
Carbon, 2019, 147, pp.1-8. ⟨10.1016/j.carbon.2019.02.053⟩
International audience; In the present paper, graphite fluoride compounds CxF with various degrees of fluorination (x = 4, 2 and 1), i.e., with different C-F bonding characteristics, were systematically investigated using X-ray Raman Spectroscopy (XR
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93bf96589921a0eb04a10cc61d1d011
https://hal.archives-ouvertes.fr/hal-02190841/document
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10
Porosity evolution of expanded vermiculite under pressure: the effect of pre-compaction
Autor: A.N. Nguyen, Alfonso San-Miguel, Annie Brûlet, Sylvie Le Floch, Laurent Duclaux, Félix Balima, Laurence Reinert, Isabelle Daniel, Laurent Gremillard, Vittoria Pischedda
Publikováno v: SN Applied Sciences
SN Applied Sciences, 2019, 1 (6), pp.629. ⟨10.1007/s42452-019-0627-9⟩
SN Applied Sciences, Springer Verlag, 2019, 1 (6), pp.629. ⟨10.1007/s42452-019-0627-9⟩
International audience; The evolution of the pore structure of compressed expanded vermiculite was investigated in situ under uniaxial stress up to 3200 bar using small-angle neutron and X-ray scattering. The studied samples have a lamellar texture i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ac5cc571ea5b16a1dec9239f2a5b57a
https://hal.science/hal-02285721
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