يعرض 1 - 10 نتائج من 353 نتيجة بحث عن '"Duchamp, M."', وقت الاستعلام: 1.00s تنقيح النتائج
  1. 1
    دورية أكاديمية
    The Oxidation Behavior of Spark Plasma Sintered Ti-48Al Alloys

    المؤلفون: Krishnan, P. S. Sankara Rama, Davidson, K. P., Xu, X.Aff1, Aff2, Chan, S. W., Tsakadze, Z., Duchamp, M., Ramanujan, R. V.Aff1, IDs11665024094511_cor7

    المصدر: Journal of Materials Engineering and Performance. :1-17

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  2. 2
    تقرير
    Operando analysis of a solid oxide fuel cell by environmental transmission electron microscopy

    المؤلفون: Jeangros, Q., Bugnet, M., Epicier, T., Frantz, C., Diethelm, S., Montinaro, D., Tyukalova, E., Pivak, Y., Van herle, J., Hessler-Wyser, A., Duchamp, M.

    المصدر: Nature Communications 14, 7959 (2023)

    مصطلحات موضوعية: Condensed Matter - Materials Science

    URL الوصول: http://arxiv.org/abs/2302.12514

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  3. 3
    مؤتمر
    Design and fabrication of InAs/GaAs QD based intermediate band solar cells by quantum engineering

    المؤلفون: Beattie, N. S., See, P., Zoppi, G., Ushasree, P. M., Duchamp, M., Farrer, I., Donchev, V., Ritchie, D. A., Tomic, S.

    المصدر: 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC) Photovoltaic Energy Conversion (WCPEC), 2018 IEEE 7th World Conference on. :2747-2751 Jun, 2018

    Relation: 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC)

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  4. 4
    دورية أكاديمية
    Improved mechanical properties of a Ti-48Al alloy processed by mechanical alloying and spark plasma sintering

    المؤلفون: Sharma, V., Tan, X., Sankara Rama Krishnan, P.S., Tekumalla, Sravya, Duchamp, M., Xu, Xuesong, Ding, Hongsheng, Chaudhary, V., Ramanujan, R.V.

    المصدر: In Materials Today Communications June 2023 35

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  5. 5
    دورية أكاديمية
    Strategies for Doped Nanocrystalline Silicon Integration in Silicon Heterojunction Solar Cells

    المؤلفون: Seif, J.P., Descoeudres, A., Nogay, G., Hanni, S., de Nicolas, S.M., Holm, N., Geissbuhler, J., Hessler-Wyser, A., Duchamp, M., Dunin-Borkowski, R.E., Ledinsky, M., De Wolf, S., Ballif, C.

    المصدر: IEEE Journal of Photovoltaics IEEE J. Photovoltaics Photovoltaics, IEEE Journal of. 6(5):1132-1140 Sep, 2016

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  6. 6
    دورية أكاديمية
    STEM electron beam-induced current measurements of organic-inorganic perovskite solar cells

    المؤلفون: Duchamp, M., Hu, H., Lam, Y.M., Dunin-Borkowski, R.E., Boothroyd, C.B.

    المصدر: In Ultramicroscopy October 2020 217

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  7. 7
    كتاب إلكتروني
    Mechanical Behavior of Nickel Base Foams for Diesel Particle Filter Applications

    المؤلفون: Duchamp, M.Aff5, Bartout, J. D.Aff5, Forest, S.Aff5, Bienvenu, Y.Aff5, Walther, G.Aff6, Saberi, S.Aff7, Boehm, A.Aff8

    المساهمون: Gladwell, G. M. L., editorAff1, Moreau, R., editorAff2, Zhao, Han, editorAff3, Fleck, N. A., editorAff4

    المصدر: IUTAM Symposium on Mechanical Properties of Cellular Materials : Proceedings of the IUTAM Symposium on Mechanical Properties of Cellular Materials, held September 17–20, 2007, LMT-Cachan, Cachan, France. 12:51-67

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  8. 8
    Operando analysis of a Solid Oxide Fuel Cell in Environmental Transmission Electron Microscopy

    المؤلفون: Jeangros, Q., Bugnet, M., Epicier, Thierry, Frantz, C., Diethelm, S., Montinaro, D., Tyukalova, E., Pivak, Y., van Herle, J., Hessler-Wyser, A., Duchamp, M.

    المساهمون: IRCELYON, ProductionsScientifiques

    مصطلحات موضوعية: [CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=od_______166::3cdde957df6d4fd08147cf3d8d3af31c
    https://hal.archives-ouvertes.fr/hal-03662985

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  9. 9
    Synthesis of nanoparticles (NPs) with well controlled characteristics is crucial to better understand the behaviour of the active phase during reaction and to better correlate it with its catalytic performance. Among other self-assembly methods, the di-block copolymer approach is well suited to obtain monodisperse supported NPs which can serve as supported metallic catalysts on both flat (model catalysts) and powder (realistic catalysts) supports. In this approach, an amphiphilic di-block copolymer dissolved in toluene yields a system of inverse micelles of which the core can be charged with metallic precursors to ultimately yield networks with well-controlled characteristics (size, composition, inter-distance). Important questions must be addressed, in particular in the case of bimetallic systems, concerning the formation of unique NPs at the cores from the initially pre-formed bimetallic seeds or the stability of the NPs networks with increasing temperature in presence of reactive gases. We have chosen to work with PS-b-P2VP di-block copolymer micelles that were functionalized with chloro-auric acid and palladium di-acetate precursors. The precursors selectively bind with N-functions in the P2VP cores to form (bi-)metallic seeds within the micelles’ cores as it was previously established in the case of PdAg alloys. We have used an Environmental TEM (Titan ETEM G2, FEI/TFS) operated at 300kV under gas pressures up to 20 mbar to gain insight on their evolution/stability during heating under oxygen and CO (for CO oxidation catalysis). Temperature variation was achieved with a WildFire sample holder with dedicated heating MEMS-microchips (DENS Solutions) capable of reaching temperatures up to 1300°C. Monolayers of controlled AuxPd1-x core-metallized PS-b-P2VP micellar solutions were deposited by spin-coating (2000/4000 rpm) on the microchips. Special care was taken to minimize/prevent any influence of the electron beam on the observed events.The Au-rich system (Au80Pd20) showed that, under oxygen, the (bi-)metallic seeds within the P2VP cores begin to sinter around 350° and unique NPs are eventually formed around 500°C which is consistent with the decomposition temperature range of the PS-b-P2VP copolymer associated with metallic nuclei. Further heating up shows that the NPs network is stable up to 900°C. Approaching the melting temperature of gold (1064°C) the NPs begin to shrink; concomitantly, smaller NPs (that grow even at 1100°C) form around the shrinking NPs. These smaller NPs are formed with Pd atoms from the initial bimetallic NPs.In the case of the Pd-rich system (Au20Pd80), under oxygen, the seeds begin to sinter around 300°C and at 450°C demixing of the NPs is observed leading to Janus NPs (Au-rich/PdO, cf. Figure); the latter are readily reduced and homogeneous NPs reform upon CO exposure (cf. Figure).The stability of the bimetallic NPs seems to be driven by the intrinsic properties of the metals composing them.Thanks are due to the METSA network for supporting this study and to CLYM for the access to the ETEM

    المؤلفون: Cadete Santos Aires, F.J., Ehret, E., Vas, J.V., Chatre, C., Landrivon, E., Duchamp, M., Epicier, Thierry

    المساهمون: IRCELYON, ProductionsScientifiques

    مصطلحات موضوعية: [CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=od_______166::45ec86f607549740bb71e2e038036585
    https://hal.archives-ouvertes.fr/hal-03681072

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  10. 10
    دورية أكاديمية
    Quenching of TiO2 photo catalysis by silver nanoparticles

    المؤلفون: Di Vece, M., Laursen, A.B., Bech, L., Maden, C.N., Duchamp, M., Mateiu, R.V., Dahl, S., Chorkendorff, I.

    المصدر: In Journal of Photochemistry & Photobiology, A: Chemistry 15 February 2012 230(1):10-14

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