13 results on '"Seine, Grégory"'
Search Results
2. New probes based on carbon nano-cones for scanning probe microscopies
- Author
-
Agence Nationale de la Recherche (France), Gobierno de Aragón, Diputación General de Aragón, Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Pontificia Universidad Católica Madre y Maestra, Cours, Robin, Paredes, Germercy, Masseboeuf, Aurélien, Ondarçuhu, Thierry, Seine, Grégory, Puech, Pascal, Arenal, Raúl, Piazza, Fabrice, Monthioux, Marc, Agence Nationale de la Recherche (France), Gobierno de Aragón, Diputación General de Aragón, Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Pontificia Universidad Católica Madre y Maestra, Cours, Robin, Paredes, Germercy, Masseboeuf, Aurélien, Ondarçuhu, Thierry, Seine, Grégory, Puech, Pascal, Arenal, Raúl, Piazza, Fabrice, and Monthioux, Marc
- Abstract
All-graphenic carbon morphologies grown on individual carbon nanotubes (CNTs) consisting of short-fiber segments bearing sharp micro-/nano-cones at both ends were mounted as new probes for scanning probe microscopies (SPM). Three mounting procedures were tested, two based on focused ion and/or electron beam processes operated in scanning electron microscopes, and another based on an irradiation-free procedure under an optical microscope. The benefits and drawbacks of all the methods are described in details. The extent to which the structural integrity of the carbon material of the cones was affected by each of the mounting processes was also investigated using Raman spectroscopy and high-resolution transmission electron microscopy. The carbon cones were found to be sensitive to both ion and electron irradiation to an unusual extent with respect to structurally-close nano-objects such as multi-wall CNTs. This was assumed to be due to the occurrence of a large number of free graphene-edges at the cone surface. The suitability of such carbon cones as SPM probes is demonstrated, the characteristics of which make them potentially superior to Si-, diamond-, or CNT-probes.
- Published
- 2023
3. The Texture, Structure, and Nanotexture of ToF-CVD-Prepared Carbon Micro-/Nano-Cones
- Author
-
Paredes, Germercy, Wang, Rongrong, Puech, Pascal, Seine, Grégory, Leyssale, Jean-Marc, Arenal, Raul, Masseboeuf, Aurélien, Piazza, Fabrice, Monthioux, Marc, Pontificia Universidad Católica Madre y Maestra (PUCMM), Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de Zaragossa, Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires (ISM), and Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Identification of defects ,Scroll texture ,Growth mechanisms ,[CHIM.MATE]Chemical Sciences/Material chemistry - Abstract
International audience
- Published
- 2022
4. Texture, Nanotexture, and Structure of Carbon Nanotube-Supported Carbon Cones
- Author
-
Paredes, Germercy, primary, Wang, Rongrong, additional, Puech, Pascal, additional, Seine, Grégory, additional, Leyssale, Jean-Marc, additional, Arenal, Raul, additional, Masseboeuf, Aurélien, additional, Piazza, Fabrice, additional, and Monthioux, Marc, additional
- Published
- 2022
- Full Text
- View/download PDF
5. Supporting Information for Texture, nanotexture, and structure of carbon nanotube-supported carbon cones
- Author
-
Paredes, Germercy, Wang, Rongrong, Puech, Pascal, Seine, Grégory, Leyssale, Jean-Marc, Arenal, Raúl, Masseboeuf, Aurélien, Piazza, Fabrice, Monthioux, Marc, Paredes, Germercy, Wang, Rongrong, Puech, Pascal, Seine, Grégory, Leyssale, Jean-Marc, Arenal, Raúl, Masseboeuf, Aurélien, Piazza, Fabrice, and Monthioux, Marc
- Abstract
Procedure for tapering Au wires; additional HRTEM image; details of the calculation for the possible dimensions of a coherent domain enabled by large radii of curvature of concentric graphenes; tentative growth scenario for the cone parts; further data on modeling.
- Published
- 2022
6. Texture, nanotexture, and structure of carbon nanotube-supported carbon cones
- Author
-
Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Gobierno de Aragón, Diputación General de Aragón, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Pontificia Universidad Católica Madre y Maestra, Paredes, Germercy, Wang, Rongrong, Puech, Pascal, Seine, Grégory, Leyssale, Jean-Marc, Arenal, Raúl, Masseboeuf, Aurélien, Piazza, Fabrice, Monthioux, Marc, Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Gobierno de Aragón, Diputación General de Aragón, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Pontificia Universidad Católica Madre y Maestra, Paredes, Germercy, Wang, Rongrong, Puech, Pascal, Seine, Grégory, Leyssale, Jean-Marc, Arenal, Raúl, Masseboeuf, Aurélien, Piazza, Fabrice, and Monthioux, Marc
- Abstract
Graphene-based carbon micro-/nano-cones were prepared by depositing pyrolytic carbon onto individual carbon nanotubes as supports using a specific chemical vapor deposition process. They were investigated by means of high-resolution scanning electron microscopy, low-voltage aberration-corrected transmission electron microscopy, Raman spectroscopy, and molecular dynamics modeling. While the graphenes were confirmed to be perfect, the cone texture was determined to be preferably scroll-like, with the scroll turns being parallel to the cone axis. Correspondingly, many of the concentrically displayed graphenes (actually scroll turns) exhibit the same helicity vector. When radii of curvature are large enough, this could allow for coherent stacking to locally take place in spite of the lattice shift induced by the curvature. A particular care was taken on investigating the cone apexes, in which a specific type of graphene termination was observed, here designated as the “zip” defect. Calculations determined a plausible stable structure that such a defect type may correspond to. This defect was found to generate a very low Raman ID/ID′ band ratio (1.5), for which physical reasons are proposed. Combining our results and that of the literature allowed proposing an identification chart for a variety of defects able to affect the graphene lattice or edges.
- Published
- 2022
7. Synthesis and (some) applications of carbon-nanotube-supported pyrolytic carbon nanocones
- Author
-
Paredes, Germercy, Seine, Grégory, Cours, Robin, Houdellier, Florent, Allouche, Hatem, Ondarçuhu, Thierry, Piazza, Fabrice, Monthioux, Marc, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Laboratorio de Nanociencia, Pontificia Universidad Católica Madre y Maestra (PUCMM), Nano-Optique et Nanomatériaux pour l'optique (CEMES-NeO), Interférométrie, In situ et Instrumentation pour la Microscopie Electronique (CEMES-I3EM), Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Pontificia Universidad Católica Madre y Maestra (Santiago, Dominican Republic)EUR grant NanoX n° ANR-17-EURE-0009, 'Programme des Investissements d’Avenir', ANR-17-EURE-0009,NanoX,Science et Ingénierie à l'Echelle Nano(2017), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Pontificia Universidad Católica Madre y Maestra - PUCMM (DOMINICAN REPUBLIC), Nanoscience Research Laboratory, Pontificia Universidad Católica Madre y Maestra, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC), Indian Carbon Society, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Université de Toulouse (UT)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), and Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Nanotube ,Atomic force microscopy ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Chemical vapor deposition ,Science des matériaux ,Carbon ,ComputingMilieux_MISCELLANEOUS - Abstract
Graphene-based cones with nanosized apex can be obtained by means of high temperature pyrolytic carbon deposition process using methane and hydrogen as gaseous feedstock and single carbon nanotubes as deposition substrates. Aside the cones, micrometer-sized carbon beads or fibre segments are deposited meanwhile which are a key morphological component for allowing handling and mounting the carbon cones and then using them for various applications. Based on both the literature dealing with pyrolytic carbon deposition processes and experimental observations, a peculiar deposition mechanism is proposed, involving the transient formation of pitch-like liquid phase droplets which deposit onto the individual carbon nanotubes. In this picture, it is believed that a key parameter is the ratio between the droplet and the nanotube diameters, respectively. The cone concentric texture and perfect nanotexture are shown by high resolution transmission electron microscopy, which allows interesting mechanical and conducting properties to be predicted. Correspondingly, applications of the carbon nanocones as electron emitters for cold-field electron sources on the one hand, and as probes for various modes of near-field microscopy on the other hand, have been tested.
- Published
- 2020
8. Plasmonic-Induced Luminescence of MoSe2 Monolayers in a Scanning Tunneling Microscope
- Author
-
Péchou, Renaud, primary, Jia, Shuai, additional, Rigor, Joel, additional, Guillermet, Olivier, additional, Seine, Grégory, additional, Lou, Jun, additional, Large, Nicolas, additional, Mlayah, Adnen, additional, and Coratger, Roland, additional
- Published
- 2020
- Full Text
- View/download PDF
9. Plasmonic-Induced Luminescence of MoSe2 Monolayers in a Scanning Tunneling Microscope.
- Author
-
Péchou, Renaud, Shuai Jia, Rigor, Joel, Guillermet, Olivier, Seine, Grégory, Jun Lou, Large, Nicolas, Mlayah, Adnen, and Coratger, Roland
- Published
- 2020
- Full Text
- View/download PDF
10. Light emission from spectral analysis of (formula presented) nanocontacts stimulated by scanning tunneling microscopy
- Author
-
Carladous, A., Coratger, Roland, Ajustron, François, Seine, Grégory, Péchou, Renaud, Beauvillain, J., Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UPS), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées
- Subjects
[PHYS]Physics [physics] ,Physics::Optics - Abstract
cited By 0; International audience; Due to a Volmer-Weber growth mode, the deposition of ultrathin gold films on molybdenite substrates leads to the formation of three-dimensional gold islands. The light emission detected on these islands has been attributed to a radiative decay of localized plasmons excited by inelastic tunneling electrons. This emission exhibits puzzling properties compared to what is usually observed on thicker gold films. Spectral analysis of emitted light enables current-voltage characteristics of the (formula presented) interface to be determined at a nanometer scale.
- Published
- 2002
- Full Text
- View/download PDF
11. Reply to 'comment on 'tip-to-surface distance variations vs voltage in scannine tunneline microscopy''
- Author
-
Seine, Grégory, Coratger, Roland, Carladous, A., Ajustron, François, Péchou, Renaud, Beauvillain, J., Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
- Subjects
[PHYS]Physics [physics] ,problem solving ,surface property ,electric potential ,article ,scanning tunneling microscopy ,distance perception - Abstract
cited By 0; International audience; The comments of Ley-Koo reveal first a true notational mistake in the ξ parameter. However, the numerical results are not significantly modified. Second, a theoretical inconsistency about nonconfocal hyperboloids is pointed out. We find that the use of nonconfocal hyperboloids as an approximation is necessary to analytically solve the problem.
- Published
- 2002
12. Light emission from spectral analysis of Au/MoS2 nanocontacts stimulated by scanning tunneling microscopy
- Author
-
Carladous, A., Coratger, Roland, Ajustron, François, Seine, Grégory, Péchou, Renaud, Beauvillain, J., Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
electron ,[PHYS]Physics [physics] ,spectroscopy ,electric current ,radioisotope decay ,molybdenum complex ,electric potential ,article ,Physics::Optics ,scanning tunneling microscopy ,gold ,film ,light - Abstract
cited By 19; International audience; Due to a Volmer-Weber growth mode, the deposition of ultrathin gold films on molybdenite substrates leads to the formation of three-dimensional gold islands. The light emission detected on these islands has been attributed to a radiative decay of localized plasmons excited by inelastic tunneling electrons. This emission exhibits puzzling properties compared to what is usually observed on thicker gold films. Spectral analysis of emitted light enables current-voltage characteristics of the Au/MoS2 interface to be determined at a nanometer scale.
- Published
- 2002
13. Structure of the {001} talc surface as seen by atomic force microscopy: comparison with X-ray and electron diffraction results
- Author
-
Ferrage, Eric, primary, Seine, Grégory, additional, Gaillot, Anne-Claire, additional, Petit, Sabine, additional, De Parseval, Philippe, additional, Boudet, Alain, additional, Lanson, Bruno, additional, Ferret, Jocelyne, additional, and Martin, François, additional
- Published
- 2006
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.