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Marco Cantoni

Cette personne a quitté l’EPFL

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Publications associées (68)

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Flash Scanning Electron Microscopy

Pascal Fua, Graham Knott, Marco Cantoni, Raphael Sznitman, Aurélien Lucchi

Scanning Electron Microscopy (SEM) is an invaluable tool for biologists and neuroscientists to study brain structure at the intra- cellular level. While able to image tissue samples with up to 5nm isotropic resolution, image acquisition is prohibitively sl ...

2013

Quantitative imaging of flux vortices in the type-II superconductor MgB2 using cryo-Lorentz transmission electron microscopy

Cécile Hébert, Marco Cantoni, Fabrizio Carbone, Duncan Thomas Lindsay Alexander, Mathieu Julien Gino Cottet

Imaging of flux vortices in high quality MgB2 single crystals has been successfully performed in a commercial field-emission gun-based transmission electron microscope. In cryo-Lorentz microscopy, the sample quality and the vortex lattice can be monitored ...

Amer Physical Soc2013

Effect of Magnesium and Zinc Ions on the Hydration Kinetics of C3S

Karen Scrivener, Marco Cantoni, Qiao Wang, Amélie Bazzoni

Impure tricalcium silicate (C3S) in portland cement may contain various foreign ions. These ions can stabilize different polymorphs of C3S at room temperature and may affect its reactivity. In this paper, the effects of magnesium and zinc on the polymorph ...

Wiley-Blackwell2014

Filming the formation and fluctuation of skyrmion domains by cryo-Lorentz transmission electron microscopy

Henrik Moodysson Rønnow, Arnaud Magrez, Fabrizio Carbone, Marco Cantoni, Jonathan White, Edoardo Baldini, Giulia Fulvia Mancini, Tatiana Latychevskaia, Ping Huang, Yoshie Murooka, Rajeswari Jayaraman

Magnetic skyrmions are promising candidates as information carriers in logic or storage devices thanks to their robustness, guaranteed by the topological protection, and their nanometric size. Currently, little is known about the influence of parameters su ...

National Academy of Sciences2015

Advances in 3D focused ion beam tomography

Marco Cantoni

This article summarizes recent technological improvements of focused ion beam tomography. New in-lens (in-column) detectors have a higher sensitivity for low energy electrons. In combination with energy filtering, this leads to better results for phase seg ...

Cambridge University Press2014

Composition and Pressure Effects on Partitioning of Ferrous Iron in Iron-Rich Lower Mantle Heterogeneities

Marco Cantoni, Philippe Gillet, James Badro, Farhang Nabiei, Susannah McGregor Dorfman, Charles-Edouard Boukaré

Both seismic observations of dense low shear velocity regions and models of magma ocean crystallization and mantle dynamics support enrichment of iron in Earth’s lowermost mantle. Physical properties of iron-rich lower mantle heterogeneities in the modern ...

2021

Spin and valence dependence of iron partitioning in Earth's deep mantle

Philippe Gillet, Cécile Hébert, Marco Cantoni, James Badro, Farhang Nabiei, Hélène Marie Piet, Teresa Katharina Dennenwaldt

We performed laser-heated diamond anvil cell experiments combined with state-of-the-art electron microanalysis (focused ion beam and aberration-corrected transmission electron microscopy) to study the distribution and valence of iron in Earth's lower mantl ...

National Academy of Sciences2016

Melting of a skyrmion lattice to a skyrmion liquid via a hexatic phase

Henrik Moodysson Rønnow, Arnaud Magrez, Fabrizio Carbone, Marco Cantoni, Ping Huang, Thomas Schönenberger

While in 3D materials melting is a single, first-order phase transition, in 2D systems, it can also proceed via an intermediate phase. For a skyrmion lattice in Cu2OSeO3, magnetic field variations can tune this quasiparticle 2D solid into a skyrmion liquid ...

Nature Publishing Group2020

Fracture toughness testing of nanocrystalline alumina and fused quartz using chevron-notched microbeams

Andreas Mortensen, Marco Cantoni, Martin Guillermo Mueller, Goran Zagar, Václav Pejchal

We show that chevron-notched samples offer an attractive approach to the measurement of fracture toughness in micron-scale samples of brittle materials and use the method to characterize quartz and nanocrystalline alumina. Focused ion beam milling is used ...

Elsevier2015

A large planetary body inferred from diamond inclusions in a ureilite meteorite

Cécile Hébert, Emad Oveisi, Marco Cantoni, Philippe Gillet, James Badro, Farhang Nabiei, Teresa Katharina Dennenwaldt

Planetary formation models show that terrestrial planets are formed by the accretion of tens of Moon-to Mars-sized planetary embryos through energetic giant impacts. However, relics of these large proto-planets are yet to be found. Ureilites are one of the ...

Nature Research2018

Structure analysis of the YBCO layer in Ag/YBCO/metal oxide buffer/Hastelloy composite tape before and after 107 MeV Kr17+ irradiation

Philippe Buffat, Elena Suvorova Buffat, Marco Cantoni

The effects of 107 MeV Kr-84(17+) ion irradiation on YBa2Cu3O7-x-based second-generation coated conductors were investigated using a combination of transmission electron microscopy, diffraction and X-ray energy dispersive spectrometry. Defects 3-5 nm in di ...

Pergamon-Elsevier Science Ltd2014

Upper critical fields well above 100 T for the superconductor SmFeAsO0.85F0.15 with T-c=46 K

Marco Cantoni

We report specific-heat measurements at magnetic fields up to 20 T on the recently discovered superconductor SmFeAsO0.85F0.15. The B-T diagram of a polycrystalline SmFeAsO0.85F0.15 sample with T-c=46 K was investigated. The temperature dependence of B-c2 w ...

2008

Correlative in vivo 2 photon and focused ion beam scanning electron microscopy of cortical neurons

Graham Knott, Marco Cantoni, Bohumil Maco

Correlating in vivo imaging of neurons and their synaptic connections with electron microscopy combines dynamic and ultrastructural information. Here we describe a semi-automated technique whereby volumes of brain tissue containing axons and dendrites, pre ...

Public Library of Science2013

EBSD, SEM and FIB characterisation of subsurface deformation during tribocorrosion of stainless steel in sulphuric acid

Stefano Mischler, Marco Cantoni, Emmanuelle Anne Boehm Courjault

The tribocorrosion behaviour of a 304L stainless steel/alumina contact was investigated in sulphuric acid at two imposed potentials (cathodic and passive) The metal deformation below the surface was investigated by analyzing cross sections using secondary ...

2010

Mechanical and microstructural characteristics of Ti6Al4V/AA2519 and Ti6Al4V/AA1050/AA2519 laminates manufactured by explosive welding

Marco Cantoni

The aim of the work was to produce laminated structures consisting of Ti-6Al-4V alloy and AA2519 plates and to investigate their microstructure and mechanical properties with anemphasis on the role of an additional AA1050 interlayer. Explosive welding was ...

Elsevier Sci Ltd2016

Mechanical and chemical mechanisms in the tribocorrosion of a Stellite type alloy

Marco Cantoni, Stefano Mischler

The tribocorrosion of a Stellite 21 type alloy sliding against alumina in sulfuric acid was investigated in order to identify relevant degradation mechanisms. Tribocorrosion tests were performed using a reciprocating motion pin-on-plate system operating un ...

Elsevier Science Sa2013

Evolution of the Morphology Near Triple-Phase Boundaries in Ni–Yttria Stabilized Zirconia Electrodes Upon Cathodic Polarization

Jan Van Herle, Marco Cantoni, Arata Nakajo, Priscilla Caliandro, Guillaume Jeanmonod, Giorgio Rinaldi, Lucie Navratilova

Microstructural changes in Ni–yttria stabilized zirconia (YSZ) near the YSZ electrolyte were examined by three-dimensional (3D) electron microscopy after electrolysis and fuel cell operation up to 10,700 h and 15,000 h, respectively. The depletion of Ni an ...

2020

Negative-pressure-induced enhancement in a freestanding ferroelectric

Nava Setter, Alexander Tagantsev, Marco Cantoni, Silviu Cosmin Sandu, Tomas Sluka, Jin Wang, Alexander Kvasov

Ferroelectrics are widespread in technology(1), being used in electronics and communications(2), medical diagnostics and industrial automation. However, extension of their operational temperature range and useful properties is desired(3-5). Recent developm ...

Nature Publishing Group2015

3D EDX microanalysis by FIB-SEM: Elemental quantification enhancement

Cécile Hébert, Marco Cantoni, Pierre Burdet

Cambridge, Cambridge University Press2012

Cross section investigations of compositions and sub-structures of tips obtained by focused electron beam induced deposition

Philippe Buffat, Patrik Willi Hoffmann, Christian Santschi, Marco Cantoni, Johann Michler, Danièle Laub, Ivo Utke

The spatial evolution of compositions and sub-structures inside focused-electron-beam-deposited tips from dicobalt-octacarbonyl Co2(CO)8 precursor at 25 keV and varying beam current (20 pA - 3 A) is extensively studied for the first time by means of energy ...

2005