Publications associées à Dioxyde de silicium

Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures

Geoffrey Bodenhausen, Aurélien Bornet, Sami Jannin, Jonas Milani, Basile Vuichoud, David Benjamin Roger Antoine Gajan, David Baudouin

Hyperpolarization of NMR-active nuclei is key to gather high quality spectra of rare species and insensitive isotopes. We have recently established that silica-based materials containing regularly distributed nitroxyl radicals connected to the silica matri ...

Wiley-V C H Verlag Gmbh2017

Entropy based fingerprint for local crystalline order

Pablo Miguel Piaggi, Michele Parrinello

We introduce a new fingerprint that allows distinguishing between liquid-like and solid-like atomic environments. This fingerprint is based on an approximate expression for the entropy projected on individual atoms. When combined with local enthalpy, this ...

Amer Inst Physics2017

Compression testing spherical particles for strength: Theory of the meridian crack test and implementation for microscopic fused quartz

Andreas Mortensen, Goran Zagar, Raphaël Charvet, Cyril Dénéréaz, Václav Pejchal

We show that uniaxial compression testing of spherical particles can give unambiguous access to their tensile strength as governed by surface flaws if one uses pairs of elasto-plastic platens, tailoring their hardness in order to control the relative area ...

2017

Silicon particle pinhole defects in aluminium–silicon alloys

Andreas Mortensen, Martin Guillermo Mueller, Marta Fornabaio

It was recently shown that silicon particles in heat-treated Al–Si casting alloys can contain flaws such as surface pinholes and grooves, which cause varying degrees of reduction in the in situ particle fracture strength and hence influence the mechanical ...

Springer Verlag2017

Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6

Helmuth Berger, Yang Zhao

Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co3TeO6. As the temperature is lowered below 26 K long range order develops, which is fully incommensura ...

Springer Nature2017

Femtosecond laser assisted 3-dimensional freeform fabrication of metal microstructures in fused silica

Andreas Mortensen, Yves Bellouard, Raphaël Charvet, Fatmah Ebrahim, Cyril Dénéréaz

Femtosecond laser exposure of fused silica combined with chemical etching has opened up new opportunities for three-dimensional freeform processing of micro-structures that can form complex micro-devices of silica, integrating optical, mechanical and/or fl ...

Spie-Int Soc Optical Engineering2017

Interplay of annealing temperature and doping in hole selective rear contacts based on silicon-rich silicon-carbide thin films

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Monica Morales Masis, Gizem Nogay, Philipp Friedrich Hermann Löper, Philippe Wyss, Oscar Esteban Rucavado Leandro, Josua Andreas Stückelberger

We present a detailed optimization of a hole selective rear contact for p-type crystalline silicon solar cells which relies on full-area processes and provides full-area passivation. The passivating hole-contact is based on a layer stack comprising a chemi ...

Elsevier Science Bv2017

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Rizlan Bernier-Latmani

Historically, it is believed that crystalline uraninite, produced via the abiotic reduction of hexavalent uranium (U-(VI)) is the dominant reduced U species formed in low-temperature uranium roll-front ore deposits. Here we show that non-crystalline U-(IV) ...

Nature Publishing Group2017

Multimaterial Nanoporous Membranes Shaped through High Aspect-Ratio Sacrificial Silicon Nanostructures

Philippe Renaud, Arnaud Bertsch, Niccolo Piacentini, Stefano Silvio Giovanni Varricchio

We present an innovative fabrication method for solid-state nanoporous membranes based on the casting of sacrificial silicon nanostructures. The process allows the individual definition of geometry and placement of each nanopore through e-beam lithography ...

Amer Chemical Soc2017

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Dioxyde de silicium

Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures

Entropy based fingerprint for local crystalline order

Compression testing spherical particles for strength: Theory of the meridian crack test and implementation for microscopic fused quartz

Silicon particle pinhole defects in aluminium–silicon alloys

Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6

Femtosecond laser assisted 3-dimensional freeform fabrication of metal microstructures in fused silica

Interplay of annealing temperature and doping in hole selective rear contacts based on silicon-rich silicon-carbide thin films

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Strength and fracture of silicon second-phase particles in aluminium casting alloys

Multimaterial Nanoporous Membranes Shaped through High Aspect-Ratio Sacrificial Silicon Nanostructures

Graph Chatbot

Chattez avec Graph Search

Strength and fracture of silicon second-phase particles in aluminium casting alloys

Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6

Silicon particle pinhole defects in aluminium–silicon alloys

Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures

Femtosecond laser assisted 3-dimensional freeform fabrication of metal microstructures in fused silica

Entropy based fingerprint for local crystalline order

Multimaterial Nanoporous Membranes Shaped through High Aspect-Ratio Sacrificial Silicon Nanostructures

Compression testing spherical particles for strength: Theory of the meridian crack test and implementation for microscopic fused quartz

Interplay of annealing temperature and doping in hole selective rear contacts based on silicon-rich silicon-carbide thin films

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits