Explanipedia

Fracture dynamics in Smart Cut™ technology: Wafer deformation measurement Open

Lucas Colonel, Kevin Blanco, Samuel Tardif, Pablo Eduardo ACOSTA ALBA, F. Mazen , et al. · 2025

International audience

Probing Strain in Individual Palladium Nanocrystals during Electrochemically Induced Phase Transitions Open

Clément Atlan, Corentin Chatelier, Apinya Ngoipala, Kyle Olson, Arnaud Viola , et al. · 2025

The palladium-hydrogen system plays a crucial role in catalysis, hydrogen production and storage, hydrogen embrittlement, and sensing technologies. Understanding the transition of palladium nanocrystals (NCs) from the hydrogen-poor (α) pha…

Giant transformation strain and rotation in Ni-Pt nanoparticles caused by atomic ordering Open

Mor Levi, Anuj Bisht, Corentin Chatelier, Clément Atlan, J. Eymery , et al. · 2025

International audience

High-resolution high-throughput spatiotemporal strain imaging reveals loss mechanisms in a surface acoustic wave device Open

Tao Zhou, Alexandre Reinhardt, Marie Bousquet, J. Eymery, Steven Leake , et al. · 2025

Probing Strain in Individual Palladium Nanocrystals during Electrochemically-Induced Phase Transitions Open

Frédéric Maillard, Clément Atlan, Corentin Chatelier, Apinya Ngoipala, Kyle Olson , et al. · 2025

The palladium-hydrogen system is essential for applications in water electrolysis, catalysis, hydrogen storage, and hydrogen sensing technologies. Understanding the transition of Pd nanocrystals from the hydrogen-poor (α) phase to the hydr…

Selective Area Growth of GaN μ-Platelets on Graphene Open

Jonathan Henriques, Dyhia Tamsaout, Ludovic Largeau, E. Cambril, Lucie Valéra , et al. · 2024

International audience

Unveiling Core–Shell Structure Formation in a Ni3Fe Nanoparticle with In Situ Multi-Bragg Coherent Diffraction Imaging Open

Corentin Chatelier, Clément Atlan, Maxime Dupraz, Steven Leake, Ni Li , et al. · 2024

International audience

High-resolution spatio-temporal strain imaging reveals loss mechanisms in a surface acoustic wave device Open

Tao Zhou, Alexandre Reinhardt, Marie Bousquet, J. Eymery, Steven Leake , et al. · 2024

Surface acoustic wave devices are key components for processing radio frequency signals in wireless communication because these devices offer simultaneously high performance, compact size and low cost. The optimization of the device struct…

Electrochemistry in the Light of In Situ Bragg Coherent Diffraction Imaging Open

Clément Atlan, Corentin Chatelier, Arnaud Viola, Kyle Olson, Michaël Grimes , et al. · 2023

International audience

Imaging the evolution of strain in platinum nanoparticles under electrochemical control Open

Frédéric Maillard, Clément Atlan, Corentin Chatelier, Isaac Martens, Maxime Dupraz , et al. · 2023

International audience

Taking Bragg Coherent Diffraction Imaging to Higher Energies at Fourth Generation Synchrotrons: Nanoscale Characterization Open

Marie‐Ingrid Richard, Isaac Martens, Maxime Dupraz, Jakub Drnec, V. Honkimäki , et al. · 2023

International audience

Imaging the strain evolution of a platinum nanoparticle under electrochemical control Open

Clément Atlan, Corentin Chatelier, Isaac Martens, Maxime Dupraz, Arnaud Viola , et al. · 2023

M-plane AlGaN digital alloy for microwire UV-B LEDs Open

Lucie Valéra, Vincent Grenier, Sylvain Finot, Catherine Bougerol, J. Eymery , et al. · 2023

The growth of non-polar AlGaN digital alloy (DA) is achieved by metal-organic vapor phase epitaxy using GaN microwire m-facets as the template. This AlGaN DA consisting of five periods of two monolayer-thick layers of GaN and AlGaN (approx…

Large Scale Integration of Functional Radio‐Frequency Flexible MEMS under Large Mechanical Strain Open

Edy Azrak, Laurent Gaëtan Michaud, Jérôme Richy, Alexandre Reinhardt, Samuel Tardif , et al. · 2022

A versatile industrial recipe of transferring nitride microelectronic components such as micro‐electromechanical systems (MEMS) onto flexible and stretchable substrates is demonstrated. This method bypasses difficulties of temperature‐rela…

Phase transitions in flexible solution-processed ferroelectric P(VDF-TrFE) copolymer thin films Open

Simon Toinet, M. Benwadih, Samuel Tardif, J. Eymery, Christine Revenant · 2022

UV-A to UV-B electroluminescence of core-shell GaN/AlGaN wire heterostructures Open

Vincent Grenier, Sylvain Finot, Lucie Valéra, J. Eymery, Gwénolé Jacopin , et al. · 2022

Core-shell GaN/AlGaN multiple quantum wells (MQWs) embedded in a p–n junction are integrated on the upper part of GaN microwires grown by silane-assisted metal organic vapor phase epitaxy. Dispersed wires are then contacted by electron bea…

LaueNN: neural-network-based hkl recognition of Laue spots and its application to polycrystalline materials Open

Ravi Raj Purohit Purushottam Raj Purohit, Samuel Tardif, O. Castelnau, J. Eymery, René Guinebretière , et al. · 2022

A feed-forward neural-network-based model is presented to index, in real time, the diffraction spots recorded during synchrotron X-ray Laue microdiffraction experiments. Data dimensionality reduction is applied to extract physical 1D featu…

Bragg coherent diffraction imaging of single 20 nm Pt particles at the ID01-EBS beamline of ESRF Open

Marie‐Ingrid Richard, S. Labat, Maxime Dupraz, Ni Li, Ewen Bellec , et al. · 2022

Electronic or catalytic properties can be modified at the nanoscale level. Engineering efficient and specific nanomaterials requires the ability to study their complex structure–property relationships. Here, Bragg coherent diffraction imag…

Hétérogénéité des déformations induites par le potentiel d'électrode mise en lumière par diffraction cohérente de Bragg in situ Open

Clément Atlan, Lu Gao, Isaac Martens, Maxime Dupraz, Corentin Chatelier , et al. · 2021

International audience

Toward Crack-Free Core–Shell GaN/AlGaN Quantum Wells Open

Vincent Grenier, Sylvain Finot, B. Gayral, Catherine Bougerol, Gwénolé Jacopin , et al. · 2021

International audience

Coherent diffraction imaging at space-group forbidden reflections Open

Guillaume Beutier, J. Eymery, Maxime Dupraz, Marie‐Ingrid Richard, Alexis Wartelle , et al. · 2021

International audience

: S4 - Cristallographie in situ, operando Open

Clément Atlan, Isaac Martens, Maxime Dupraz, J. Eymery, Frédéric Maillard , et al. · 2021

International audience

Stretchable Transparent Light-Emitting Diodes Based on InGaN/GaN Quantum Well Microwires and Carbon Nanotube Films Open

Fedor M. Kochetkov, Vladimir Neplokh, Viktoriia Mastalieva, S M Mukhangali, A. A. Vorob’ev , et al. · 2021

We propose and demonstrate both flexible and stretchable blue light-emitting diodes based on core/shell InGaN/GaN quantum well microwires embedded in polydimethylsiloxane membranes with strain-insensitive transparent electrodes involving s…

Self-powered proton detectors based on GaN core–shell p–n microwires Open

Dirkjan Verheij, M. Peres, Susana Cardoso, L.C. Alves, E. Alves , et al. · 2021

Self-powered particle detectors have the potential to offer exceptional flexibility and compactness in applications where size limits and low power consumption are key requisites. Here, we report on the fabrication and characterization of …

Scanning x-ray microscopy imaging of strain relaxation and fluctuations in thin patterned SiGe-on-insulator nanostructures Open

Gaétan Girard, R. Berthelon, F. Andrieu, Steven Leake, Gilbert Chahine , et al. · 2021

Strain engineered performance enhancement in SiGe channels for p-MOSFETs is one of the main drivers for the development of microelectronic technologies. Thus, there is a need for precise and accurate strain mapping techniques with small be…

Dual‐Color Emission from Monolithic m‐Plane Core–Shell InGaN/GaN Quantum Wells Open

Akanksha Kapoor, Vincent Grenier, Éric Robin, Catherine Bougerol, Gwénolé Jacopin , et al. · 2021

A dual‐color emission is achieved combining two monolithic sets of core–shell multiple quantum wells (MQWs) grown on GaN microwires. The shell heterostructure is composed of 3× blue MQWs and 7× green MQWs with photoluminescence emission co…

Carrier dynamics near a crack in GaN microwires with AlGaN multiple quantum wells Open

Sylvain Finot, Vincent Grenier, Vitaly Z. Zubialevich, Catherine Bougerol, Pietro Pampili , et al. · 2020

Relaxation of tensile strain in AlGaN heterostructures grown on a GaN template can lead to the formation of cracks. These extended defects locally degrade the crystal quality, resulting in a local increase in non-radiative recombinations. …

Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes Open

Nan Guan, Nuño Amador-Méndez, Arup K. Kunti, A. V. Babichev, Subrata Das , et al. · 2020

We analyze the thermal behavior of a flexible nanowire (NW) light-emitting diode (LED) operated under different injection conditions. The LED is based on metal–organic vapor-phase deposition (MOCVD)-grown self-assembled InGaN/GaN NWs in a …

UV Emission from GaN Wires with m-Plane Core–Shell GaN/AlGaN Multiple Quantum Wells Open

Vincent Grenier, Sylvain Finot, Gwénolé Jacopin, Catherine Bougerol, Éric Robin , et al. · 2020

The present work reports high-quality nonpolar GaN/Al_0.6Ga_0.4N multiple quantum wells (MQWs) grown in core-shell geometry by metal-organic vapor-phase epitaxy on the m-plane sidewalls of c̅-oriented hexag…

Mapping Inversion Domain Boundaries along Single GaN Wires with Bragg Coherent X-ray Imaging Open

Ni Li, S. Labat, Steven Leake, Maxime Dupraz, Jérôme Carnis , et al. · 2020

Gallium nitride (GaN) is of technological importance for a wide variety of optoelectronic applications. Defects in GaN, like inversion domain boundaries (IDBs), significantly affect the electrical and optical properties of the material. We…

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