Search Results - "Ducastelle, Francois"

Entropy-driven stability of chiral single-walled carbon nanotubes by Magnin, Yann, Amara, Hakim, Ducastelle, François, Loiseau, Annick, Bichara, Christophe

“…Single-walled carbon nanotubes are hollow cylinders that can grow centimeters long via carbon incorporation at the interface with a catalyst. They display…”
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Direct and indirect excitons in boron nitride polymorphs: a story of atomic configuration and electronic correlation by Sponza, Lorenzo, Amara, Hakim, Attaccalite, Claudio, Latil, Sylvain, Galvani, Thomas, Paleari, Fulvio, Wirtz, Ludger, Ducastelle, François

“…We present a detailed discussion of the electronic band structure and excitonic dispersion of hexagonal boron nitride (hBN) in the single layer configuration…”
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Momentum-Resolved Dielectric Response of Free-Standing Mono‑, Bi‑, and Trilayer Black Phosphorus by Gaufrès, Etienne, Fossard, Frédéric, Gosselin, Vincent, Sponza, Lorenzo, Ducastelle, François, Li, Zhenglu, Louie, Steven G, Martel, Richard, Côté, Michel, Loiseau, Annick

“…Black phosphorus (BP), a 2D semiconducting material of interest in electronics and photonics, exhibits physical properties characterized by strong anisotropy…”
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Structural Size Effect in Capped Metallic Nanoparticles by Moreira Da Silva, Cora, Girard, Armelle, Le Bouar, Yann, Fossard, Frédéric, Dragoe, Diana, Ducastelle, François, Loiseau, Annick, Huc, Vincent

“…The surfactant used during a colloidal synthesis is known to control the size and shape of metallic nanoparticles. However, its influence on the nanoparticle…”
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Excitons in boron nitride single layer by Galvani, Thomas, Paleari, Fulvio, Miranda, Henrique P. C., Molina-Sanchez, Alejandro, Wirtz, Ludger, Latil, Sylvain, Amara, Hakim, Ducastelle, François

“…Boron nitride single layer belongs to the family of 2D materials whose optical properties are currently receiving considerable attention. Strong excitonic…”
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Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction by Weatherup, Robert S, Amara, Hakim, Blume, Raoul, Dlubak, Bruno, Bayer, Bernhard C, Diarra, Mamadou, Bahri, Mounib, Cabrero-Vilatela, Andrea, Caneva, Sabina, Kidambi, Piran R, Martin, Marie-Blandine, Deranlot, Cyrile, Seneor, Pierre, Schloegl, Robert, Ducastelle, François, Bichara, Christophe, Hofmann, Stephan

“…The dynamics of the graphene–catalyst interaction during chemical vapor deposition are investigated using in situ, time- and depth-resolved X-ray photoelectron…”
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Sublattice Dependence and Gate Tunability of Midgap and Resonant States Induced by Native Dopants in Bernal-Stacked Bilayer Graphene by Joucken, Frédéric, Bena, Cristina, Ge, Zhehao, Quezada-Lopez, Eberth Arturo, Ducastelle, François, Tanagushi, Takashi, Watanabe, Kenji, Velasco, Jairo

“…The properties of semiconductors can be crucially impacted by midgap states induced by dopants, which can be native or intentionally incorporated in the…”
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Bright Luminescence from Indirect and Strongly Bound Excitons in h-BN by Schué, Léonard, Sponza, Lorenzo, Plaud, Alexandre, Bensalah, Hakima, Watanabe, Kenji, Taniguchi, Takashi, Ducastelle, François, Loiseau, Annick, Barjon, Julien

“…A quantitative analysis of the excitonic luminescence efficiency in hexagonal boron nitride (h-BN) is carried out by cathodoluminescence in the ultraviolet…”
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Two-photon absorption in two-dimensional materials: The case of hexagonal boron nitride by Attaccalite, Claudio, Grüning, Myrta, Amara, Hakim, Latil, Sylvain, Ducastelle, François

“…We calculate the two-photon absorption in bulk and single layer hexagonal boron nitride (hBN) both by an ab-initio real-time Bethe-Salpeter approach and by a…”
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Electronic Interaction between Nitrogen Atoms in Doped Graphene by Tison, Yann, Lagoute, Jérôme, Repain, Vincent, Chacon, Cyril, Girard, Yann, Rousset, Sylvie, Joucken, Frédéric, Sharma, Dimpy, Henrard, Luc, Amara, Hakim, Ghedjatti, Ahmed, Ducastelle, François

“…Many potential applications of graphene require either the possibility of tuning its electronic structure or the addition of reactive sites on its chemically…”
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Magnetocrystalline anisotropy energy of Fe ( 001 ) and Fe ( 110 ) slabs and nanoclusters: A detailed local analysis within a tight-binding model by Li, Dongzhe, Smogunov, Alexander, Barreteau, Cyrille, Ducastelle, François, Spanjaard, Daniel

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Nickel-Assisted Healing of Defective Graphene by Karoui, Sondes, Amara, Hakim, Bichara, Christophe, Ducastelle, François

“…The healing of graphene grown from a metallic substrate is investigated using tight-binding Monte Carlo simulations. At temperatures (ranging from 1000 to 2500…”
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Angle-resolved electron energy loss spectroscopy in hexagonal boron nitride by Fossard, Frederic, Sponza, Lorenzo, Schué, Léonard, Attaccalite, Claudio, Ducastelle, François, Barjon, Julien, Loiseau, Annick

“…Electron energy loss spectra were measured on hexagonal boron nitride single crystals employing an electron energy loss spectroscopic setup composed of an…”
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Distinguishing Different Stackings in Layered Materials via Luminescence Spectroscopy by Zanfrognini, Matteo, Plaud, Alexandre, Stenger, Ingrid, Fossard, Frédéric, Sponza, Lorenzo, Schué, Léonard, Paleari, Fulvio, Molinari, Elisa, Varsano, Daniele, Wirtz, Ludger, Ducastelle, François, Loiseau, Annick, Barjon, Julien

“…Despite its simple crystal structure, layered boron nitride features a surprisingly complex variety of phonon-assisted luminescence peaks. We present a…”
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Charge transfer and electronic doping in nitrogen-doped graphene by Joucken, Frédéric, Tison, Yann, Le Fèvre, Patrick, Tejeda, Antonio, Taleb-Ibrahimi, Amina, Conrad, Edward, Repain, Vincent, Chacon, Cyril, Bellec, Amandine, Girard, Yann, Rousset, Sylvie, Ghijsen, Jacques, Sporken, Robert, Amara, Hakim, Ducastelle, François, Lagoute, Jérôme

“…Understanding the modification of the graphene’s electronic structure upon doping is crucial for enlarging its potential applications. We present a study of…”
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Optoelectronic studies of boron nitride nanotubes and hexagonal boron nitride crystals by photoconductivity and photoluminescence spectroscopy experiments by Brasse, Gurvan, Maine, Sylvain, Pierret, Aurélie, Jaffrennou, Périne, Attal-Trétout, Brigitte, Ducastelle, Francois, Loiseau, Annick

“…The optoelectronic properties of hexagonal boron‐nitride and boron‐nitride nanotubes (BNNTs) are investigated by using photoconductivity experiments,…”
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Early Stages in the Nucleation Process of Carbon Nanotubes by Moors, Matthieu, Amara, Hakim, Visart de Bocarmé, Thierry, Bichara, Christophe, Ducastelle, François, Kruse, Norbert, Charlier, Jean-Christophe

“…The early stages of carbon nanotube nucleation are investigated using field ion/electron microscopy along with in situ local chemical probing of a single…”
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Carbon solubility in nickel nanoparticles: A grand canonical Monte Carlo study by Diarra, Mamadou, Amara, Hakim, Ducastelle, François, Bichara, Christophe

“…Producing single‐wall carbon nanotubes with a given structure, in terms of diameter and chirality, is still a difficult issue. In this context, understanding…”
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Identification of Nitrogen Dopants in Single-Walled Carbon Nanotubes by Scanning Tunneling Microscopy by Tison, Yann, Lin, Hong, Lagoute, Jérôme, Repain, Vincent, Chacon, Cyril, Girard, Yann, Rousset, Sylvie, Henrard, Luc, Zheng, Bing, Susi, Toma, Kauppinen, Esko I, Ducastelle, François, Loiseau, Annick

“…Using scanning tunnelling microscopy and spectroscopy, we investigated the atomic and electronic structure of nitrogen-doped single walled carbon nanotubes…”
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Giant tunnel-electron injection in nitrogen-doped graphene by Lagoute, Jérôme, Joucken, Frédéric, Repain, Vincent, Tison, Yann, Chacon, Cyril, Bellec, Amandine, Girard, Yann, Sporken, Robert, Conrad, Edward H., Ducastelle, François, Palsgaard, Mattias, Andersen, Nick Papior, Brandbyge, Mads, Rousset, Sylvie

“…Scanning tunneling microscopy experiments have been performed to measure the local electron injection in nitrogen-doped graphene on SiC(0001) and were…”
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