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855 results on '"Gregoire, M."'

10. Evolution of the Ni0.9Pt0.1/Si system under annealing via nano-crystalline textured phases.

Author

Guillemin, S., Gergaud, P., Bernier, N., Merlin, M., Delwail, C., Minoret, S., Famulok, R., Gregoire, M., Nemouchi, F., and Rodriguez, Ph.

Subjects
X-ray diffraction, TRANSMISSION electron microscopy, DIFFUSION control, THIN films, NUCLEATION
Abstract

The reaction of a Ni 0.9 Pt 0.1 7 nm-thick thin film with the underlying Si(001) substrate as a function of the annealing temperature was studied using in situ XRD techniques as well as ex situ advanced XRD and TEM imaging on quenched samples. It was found that the Ni 0.9 Pt 0.1 /Si system initially evolves accordingly to diffusion controlled reactions via the development of nano-crystalline Ni-rich Ni 1 − x (Pt) Si x phases that combine the ability of fast kinetic growth and texture inheritance. The system remains then stable over some tens of degrees before Ni(Pt)Si nucleation occurs, once the related energetic barrier is overcome. It was additionally found that this newly observed phase sequence remains valid up to Ni 0.9 Pt 0.1 deposited layer thicknesses of about 16 nm, which is remarkable for such systems. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Impact of nanosecond laser energy density on the C40-TiSi2 formation and C54-TiSi2 transformation temperature.

Author

Esposito, L., Kerdilès, S., Gregoire, M., Benigni, P., Dabertrand, K., Mattei, J.-G., and Mangelinck, D.

Subjects
ENERGY density, ATOM-probe tomography, RAPID thermal processing, LASER annealing, LOW temperatures, LASER peening, IMAGE sensors
Abstract

The formation of Ti based contacts in new image sensor complementary metal–oxide–semiconductor technologies is limited by the requirement of a low thermal budget. The objectives of these new 3D-technologies are to promote ohmic, low resistance, repeatable, and reliable contacts by keeping the process temperature as low as possible. In this work, ultraviolet-nanosecond laser annealing was performed before classical rapid thermal annealing (RTA) to promote the formation at lower RTA temperatures of the low resistivity C54-TiSi2 phase. The laser energy density was varied from 0.30 to 1.00 J/cm² with three pulses in order to form the C40-TiSi2 phase and finally to obtain the C54-TiSi2 phase by a subsequent RTA at low temperatures. The formed Ti-silicides were characterized by four-point probe measurements, x-ray diffraction, transmission electron microscopy, and atom probe tomography. A threshold in the laser energy density for the formation of the C40-TiSi2 is observed at an energy density of 0.85 J/cm² for the targeted TiN/Ti stack on blanket wafers. The C40-TiSi2 formation by laser annealing prior to RTA enables to reduce the formation temperature of the C54-TiSi2 phase by 150 °C in comparison to a single RTA applied after the Ti/TiN deposition. This specific phase sequence is only observed for a laser energy density close to 0.85 J/cm². At higher energy densities, the presence of C49-TiSi2 or a mixture of C49-TiSi2 and C54-TiSi2 is observed. The underlying mechanisms of the phase sequence and formation are discussed in detail. [ABSTRACT FROM AUTHOR]

Published
2020
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31. Impact of local back biasing on performance in hybrid FDSOI/bulk high-k/metal gate low power (LP) technology

Author

Fenouillet-Beranger, C., Perreau, P., Benoist, T., Richier, C., Haendler, S., Pradelle, J., Bustos, J., Brun, P., Tosti, L., Weber, O., Andrieu, F., Orlando, B., Pellissier-Tanon, D., Abbate, F., Richard, C., Beneyton, R., Gregoire, M., Ducote, J., Gouraud, P., Margain, A., Borowiak, C., Bianchini, R., Planes, N., Gourvest, E., Bourdelle, K.K., Nguyen, B.Y., Poiroux, T., Skotnicki, T., Faynot, O., and Boeuf, F.

Published
2013
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35. Abstract No. 310 Novel radiopaque Y-90 glass microspheres (Eye90 microspheres) for canine hepatocellular carcinoma: correlation of microsphere radiopacity with TOF PET radioactivity and mRECIST and pathologic tumor response determination

Author

Abraham, R., primary, Davis, R., additional, Lewandowski, R., additional, Liu, D., additional, Gordon, A., additional, Collins, Z., additional, Westcott, M., additional, Nutting, C., additional, Karnia, J., additional, Kim, D., additional, Gregoire, M., additional, Verma, A., additional, Dobrowski, D., additional, and Bryan, J., additional

Published
2022
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37. Influence of industrial processing parameters on the effective properties of long aligned European hemp fibres in composite materials

Author

Gabrion, X., Koolen, G., Gregoire, M., Musio, Salvatore, Bar, M., Botturi, D., Rondi, G., de Luycker, E., Amaducci, Stefano, Ouagne, P., Van Vuure, A., Placet, V., Musio S. (ORCID:0000-0003-4004-801X), Amaducci S. (ORCID:0000-0002-6184-9257), Gabrion, X., Koolen, G., Gregoire, M., Musio, Salvatore, Bar, M., Botturi, D., Rondi, G., de Luycker, E., Amaducci, Stefano, Ouagne, P., Van Vuure, A., Placet, V., Musio S. (ORCID:0000-0003-4004-801X), and Amaducci S. (ORCID:0000-0002-6184-9257)

Abstract

Hemp is a sustainable source of natural fibres that can contribute to meet the increasing demand for technical applications in the textile and the composite sectors. Continuous reinforcements can be produced using the existing flax machinery, initially developed for textile purposes. To achieve competitive and economically viable fibre yields and a fibre quality suitable for secondary processing and composite application, hemp needs to be adequately selected and prepared and the flax machinery and settings have to be adapted to the hemp specificities. In this context, this paper studies the influence of agronomic features and processing stages and settings on the effective tensile properties of fibres extracted from two hemp varieties determined using impregnated fibre bundle tests. Results show that the effective properties of fibres are maintained and even improved during processing, in particular during the hackling and stretching steps. Hemp can achieve properties comparable to high quality long flax fibres.

Published
2022

38. A Multi-Proxy Approach to Reconstruct Hypoxia on the NW Black Sea Shelf over the Holocene

Author

Robinet, Sarah, Matossian, Alice Ofélia, Capet, Arthur, Chou, Lei, Fontaine, François, Gregoire, M., Lepoint, Gilles, Piotrowska, Natalia, Plante, Audrey, Romín, Olaya Román, Fagel, Nathalie, Robinet, Sarah, Matossian, Alice Ofélia, Capet, Arthur, Chou, Lei, Fontaine, François, Gregoire, M., Lepoint, Gilles, Piotrowska, Natalia, Plante, Audrey, Romín, Olaya Román, and Fagel, Nathalie

Abstract

Coastal hypoxia is a worldwide concern. Even though seasonal hypoxia has been reported on the northwestern Black Sea shelf since the 1970s, little is known about oxygenation in this area over the Holocene. With a multiproxy approach, this work aimed to detect potential hypoxic events in two gravity cores. Our results demonstrate that the most common proxies of hypoxia are irrelevant for the Black Sea coastal environment. For instance, the Ammonia-Elphidium index appears to be inappropriate. We assume a salinity bias due to the influence of freshwater inputs. Likely, the redox sensitivity of vanadium is obscured by the dominant supply of detrital elements. However, the size distribution of framboidal pyrites gives clear indications of the oxygenation of the water column. Indeed, the absence of framboidal pyrites in the core located at the Danube mouth suggests permanent oxic conditions over the last 2 ka. On the contrary, in the core located in the Odessa Bay, the two observed ranges of pyrite sizes evidence an alternation between anoxic (mean diameter 3–6 ± 1–2 µm) and hypoxic or oxic (mean diameter 6–10 ± 3–5 µm) conditions in bottom waters over the last 7 ka. Therefore, this proxy reveals different oxygenation levels for these proximal sites., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2022

47. Enhanced monitoring of life in the sea is a critical component of conservation management and sustainable economic growth

Author

Estes, M., Jr., Anderson, C., Appeltans, W., Bax, N., Bednaršek, N., Canonico, G., Djavidnia, S., Escobar, E., Fietzek, P., Gregoire, M., Hazen, E., Kavanaugh, M., Lejzerowicz, F., Lombard, F., Miloslavich, P., Möller, K.O., Monk, J., Montes, E., Moustahfid, H., Muelbert, M.M.C., Muller-Karger, F., Peavey Reeves, L.E., Satterthwaite, E.V., Schmidt, J.O., Sequeira, A.M.M., Turner, W., Weatherdon, L.V., University of Alabama in Huntsville (UAH), Scripps Institution of Oceanography (SIO), University of California [San Diego] (UC San Diego), University of California-University of California, Intergovernmental Oceanographic Commission of UNESCO, University of Tasmania [Hobart, Australia] (UTAS), Southern California Coastal Water Research Project, NOAA Integrated Ocean Observing System (IOOS), National Oceanic and Atmospheric Administration (NOAA), Universidad Nacional Autónoma de México (UNAM), Université de Liège, College of Earth, Ocean and Atmospheric Sciences [Corvallis] (CEOAS), Oregon State University (OSU), University of California, Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Scientific Committee on Oceanic Research (SCOR), Institut für Küstenforschung / Institute of Coastal Research, Helmholtz-Zentrum Geesthacht (GKSS), Institute for Marine and Antarctic Studies and Centre for Marine Socioecology, University of South Florida [Tampa] (USF), Universidade Federal de São Paulo, College of Marine Science [St Petersburg, FL], International Council for the Exploration of the Sea, Partenaires INRAE, The University of Western Australia (UWA), GSFC Earth Sciences Division, NASA Goddard Space Flight Center (GSFC), and United Nations Environment Programme World Conservation Monitoring Centre

Subjects
0106 biological sciences, Marine biological data, Economics and Econometrics, 010504 meteorology & atmospheric sciences, Blue economy, Biodiversity, Ecological forecasting, Management, Monitoring, Policy and Law, Aquatic Science, 01 natural sciences, 12. Responsible consumption, Ecosystem services, Component (UML), 11. Sustainability, 14. Life underwater, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, 0105 earth and related environmental sciences, General Environmental Science, Sustainable development, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, business.industry, 010604 marine biology & hydrobiology, Environmental resource management, Essential ocean variables, 15. Life on land, Sustainable, 6. Clean water, Marine biodiversity, 13. Climate action, Business, Water quality, Law
Abstract

International audience; Marine biodiversity is a fundamental characteristic of our planet that depends on and influences climate, water quality, and many ocean state variables. It is also at the core of ecosystem services that can make or break economic development in any region. Our purpose is to highlight the need for marine biological observations to inform science and conservation management and to support the blue economy. We provide ten recommenda-tions, applicable now, to measure and forecast biological Essential Ocean Variables (EOVs) as part of economic monitoring efforts. The UN Decade of Ocean Science for Sustainable Development (2021–2030) provides a timely opportunity to implement these recommendations to benefit humanity and enable the USD 3 trillion global ocean economy expected by 2030.

Published
2021
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