Publications associées à Pyramide pentagonale

Excitonic absorption and defect-related emission in three-dimensional MoS2 pyramids

Anna Fontcuberta i Morral, Luca Francaviglia, Marco Negri

MoS2 micro-pyramids have demonstrated interesting properties in the fields of photonics and non-linear optics. In this work, we show the excitonic absorption and cathodoluminescence (CL) emission of MoS2 micro-pyramids grown by chemical vapor deposition (C ...

ROYAL SOC CHEMISTRY2021

Possibility of an unconventional spin state of Ir4+ in Ba21Ir9O43 single crystal

László Forró, Henrik Moodysson Rønnow, Arnaud Magrez, Oleg Yazyev, Ivica Zivkovic, Alla Arakcheeva, Bálint Náfrádi, Lin Yang, Andrea Pisoni, Sergiy Katrych, Jacim Jacimovic, Noore Elahi Shaik

We report the synthesis of single crystals of a novel layered iridate Ba21Ir9O43 and present the crystallographic, transport, and magnetic properties of this material. The compound has a hexagonal structure with two iridium oxide layers stacked along the c ...

Amer Physical Soc2016

Mechanism and energetics of < c plus a > dislocation cross-slip in hcp metals

William Curtin, Zhaoxuan Wu

Hexagonal close-packed (hcp) metals such as Mg, Ti, and Zr are lightweight and/or durable metals with critical structural applications in the automotive (Mg), aerospace (Ti), and nuclear (Zr) industries. The hcp structure, however, brings significant compl ...

National Academy of Sciences2016

Plasticity of the dense hydrous magnesium silicate phase A at subduction zones conditions

Elodie Adeline Amiguet, Yi Wang

The plasticity of the dense hydrous magnesium silicate (DHMS) phase A, a key hydrous mineral within cold subduction zones, was investigated by two complementary approaches: high-pressure deformation experiments and computational methods. The deformation ex ...

Elsevier2015

Discrete dislocation modeling of fracture in plastically anisotropic metals

William Curtin

The intrinsic lattice resistance to dislocation motion, or Peierls stress, depends on the core structure of the dislocation and is one essential feature controlling plastic anisotropy in materials such as HCP Zn, Mg, and Ti. Here, we implement an anisotrop ...

Pergamon-Elsevier Science Ltd2013

Analysis of dissociation of < c > and < c+a > dislocations to nucleate (1 0 -1 2) twins in Mg

William Curtin, Maryam Ghazisaeidi

A mechanism for (1 0 (1) over bar 2) twin nucleation in Mg is studied in which edge < c > and mixed < c + a > lattice dislocations dissociate into a stable twin, having at least the minimum 6-layer thickness formed by three glissile twinning dislocations, ...

Institute of Physics2013

A 3D Granular Model Of Equiaxed-Granular Solidification

Michel Rappaz, Jean-Luc Desbiolles, André Phillion

The solidification of an aluminum-copper alloy has been simulated in 3D using a granular model. Compared to previous similar 2D approaches for where only one phase is continuous, the extension to 3D allows for concurrent continuity of the solid and liquid ...

Minerals, Metals & Materials Soc, 184 Thorn Hill Rd, Warrendale, Pa 15086-7514 Usa2009

Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys

Jean-Marie Drezet

Hot tearing, a severe defect occurring during solidification is the conjunction of tensile stresses which are transmitted to the mushy zone by the coherent solid underneath and of insufficient liquid feeding to compensate for the volumetric change. The RDG ...

Th. Böllinghaus, H. Herold, C. E. Cross and J.C Lippold2008

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Pyramide pentagonale

Excitonic absorption and defect-related emission in three-dimensional MoS2 pyramids

Possibility of an unconventional spin state of Ir4+ in Ba21Ir9O43 single crystal

Mechanism and energetics of < c plus a > dislocation cross-slip in hcp metals

Plasticity of the dense hydrous magnesium silicate phase A at subduction zones conditions

Discrete dislocation modeling of fracture in plastically anisotropic metals

Analysis of dissociation of < c > and < c+a > dislocations to nucleate (1 0 -1 2) twins in Mg

Dilute-Nitride Low-Dimensional Nanostructures Formed on Non-Planar Substrates

A 3D Granular Model Of Equiaxed-Granular Solidification

Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys

Microstructure of Ti5Al2.5Sn and Ti6Al4V deformed in tensile and fatigue tests

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Chattez avec Graph Search

Excitonic absorption and defect-related emission in three-dimensional MoS2 pyramids

Microstructure of Ti5Al2.5Sn and Ti6Al4V deformed in tensile and fatigue tests

Plasticity of the dense hydrous magnesium silicate phase A at subduction zones conditions

A 3D Granular Model Of Equiaxed-Granular Solidification

Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys

Possibility of an unconventional spin state of Ir4+ in Ba21Ir9O43 single crystal

Discrete dislocation modeling of fracture in plastically anisotropic metals

Mechanism and energetics of < c plus a > dislocation cross-slip in hcp metals

Dilute-Nitride Low-Dimensional Nanostructures Formed on Non-Planar Substrates

Analysis of dissociation of < c > and < c+a > dislocations to nucleate (1 0 -1 2) twins in Mg