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Professor Emeritus SB SB-DEC PH-SB

Philippe Buffat Prof. birth date: 07.01.1942 nationality: Swiss and French office(s): MXC114 phone(s): [+41 21 69] 34103 private phone: +41 79 337 9384 MISSION Former director of the Centre Interdisciplinaire de Microscopie Electronique (CIME) (1980-2007). Associated editor of the European Physical Journal-Applied Physics (EPJAP) for microscopy, crystallography, nanosystems physics and nanomaterials. President of the Programme committee of the French Electron Microscopy and Atom Probe net METSA (2009-2010). Cooperation with the Institute of Crystallography of the Russian Academy of Science and the Kurtchatov Research Institute in Moscow. Teaching analytical electron microscopy and research collaboration with the Center of Excellence for Material Advanced Testing and Computer Modeling of Metallurgical Process, AGH-University of Science and Technology, Krakow BIOGRAPHY Born in Lausanne (Switzerland) in 1942. EPUL physics engineer diploma in 1967 and EPFL PhD in physics in 1976. From 1966 he studies at the Experimental Physics Laboratory (Prof. J.P. Borel) the physical properties peculiar to the very small size metal crystals and gets a PhD degree for his thesis "Abaissement de la température de fusion de petits cristaux d'or par effet de taille thermodynamique" (Lowering of the melting temperature of small gold crystals by thermodynamic size effect. In 1971, he started to develop an electron microscopy facility available for all EPFL students and researchers. Since 1983, he manages the Centre interdépartemental de microscopie électronique (CIME). His activity covers all the techniques related to transmission and scanning electron microscopy applied to materials science and solid state physics. His own interest is directed towards the structure of nanocrystals, their size effects and behaviour under strong electron irradiation, the phase transitions in perovskites, the characterisation of nanophases, multilayer and interface structures of crystalline materials and bioceramics. He has been teaching electron microscopy for physics and materials science students and training users of the CIME. He is past-president (2006-2007) of the Société Française des Microscopies (Sfµ), emeritus member of the Swiss Society of Optics and Microscopy (SSOM). MAIN PUBLICATIONS S. Diethelm, J. Van herle, J. Sfeir, and P. Buffat. Correlation between oxygen transport properties and microstructure in La<sub>0.5</sub>Sr<sub>0.5</sub>FeO<sub>3-´</sub>. Journal of the European Ceramic Society, 25(12 spec. iss):2191-2196, 2005. [ DOI | Details | Full Text | Link ] A. Czyrska-Filemonowicz, P. A. Buffat, M. Lucki, T. Moskalewicz, W. Rakowski, J.Lekki, and T. Wierzchon. Transmission electron microscopy and atomic force microscopy characterisation of titanium-base alloys nitrided under glow discharge. Acta Materialia, 53(16):4367-4377, 2005. [ DOI | Details | Link ] P. Buffat. Electron diffraction and HRTEM studies of multipy-twinned structures and dynamical events in metal nanoparticles : facts and artefacts. Materials Chemistry and Physics, 81(2-3):368-375, 2003. publi05. [ DOI | Details ] I. Yuranov, P. Moeckli, E. Suvorova, P. Buffat, L. Kiwi-Minsker, and A. Renken. Pd/SiO2 catalysts: synthesis of Pd nanoparticles with the controlled size in mesoporous silicas. Journal of Molecular Catalysis A: Chemical, 192(1-2):239-251, 2003. CAN 138:290089 51-12 Fossil Fuels, Derivatives, and Related Products LGRC,Swiss Federal Institute of Technology,Lausanne,Switz. Journal 1381-1169 written in English. 7440-05-3 (Palladium); 7631-86-9 (Silica) Role: CAT (Catalyst use), USES (Uses) (Pd/SiO2 catalysts: synthesis of Pd nanoparticles with the controlled size in mesoporous silicas); 74-82-8 (Methane) Role: CPS (Chemical process), PEP (Physical, engineering or chemical process), PROC (Process) (Pd/SiO2 catalysts: synthesis of Pd nanoparticles with the controlled size in mesoporous silicas). [ DOI | Details | Full Text | Link ] N. Kramar, M. Cosca, and P. Buffat. Stacking fault-enhanced argon diffusion in naturally deformed muscovite. Geochimica Et Cosmochimica Acta, 66(15A):A416-A416, 2002. Suppl. 1. [ DOI | Details ] D. A. Bulushev, L. Kiwi-Minsker, I. Youranov, E. I. Suvorova, P. A. Buffat, and A. Renken. Structured Au/FeOx/C catalysts for low temperature CO oxidation. Journal of Catalysis, 210(1):149-159, 2002. [ DOI | Details | Full Text ] E. Suvorova and P. Buffat. Electron diffraction and HRTEM characterization of calcium phosphate precipitation from aqueous solutions under biomineralization conditions. European Cells and Materials, 1:27-42, 2001. chercher abbréviation. [ DOI | Details ] J. Sfeir, P. Buffat, P. Möckli, N. Xanthopoulos, R. Vasquez, H. Mathieu, J. Van Herle, and K. Thampi. Lanthanum chromite based catalysts for oxidation of methane directly on SOFC anodes. j catal, 202(2):229-244, 2001. [ DOI | Details ] C. Cayron and P. Buffat. TEM study of the b' phase (Al-Mg-Si alloys) and QC phase (Al-Cu-Mg-Si alloys): ordering mechanism and cystallographic structure. Acta mater., 48(10):2639-2653, 2000. [ DOI | Details ] M. Foeth, A. Sfera, P. Buffat, and P. Stadelmann. A comparison of HREM and Weak Beam Transmission Electron Microscopy for the quantitative measurement of the thickness of ferroelectric domain walls. j electron microsc, 48(6):717-723, 1999. [ DOI | Details ] L. Audinet, C. Ricolleau, M. Gandais, T. Gacoin, J. Boilot, and P. Buffat. Structural properties of coated nanoparticles : the CdS/ZnS nanostructure. Philos. Mag., A 79(10):2379-2396, 1999. [ DOI | Details ] D. Le-Bellac, J. Kiat, P. Garnier, H. Moudden, P. Sciau, P. Buffat, and G. André. Mechanism of the incommensurate phase in lead oxide alpha -PbO. Physical Review B, 52(18):13184-94, 1995. [ DOI | Details ] L. Pavesi, D. Araujo, H. Nguyen, J. Ganière, F. Reinhart, P. Buffat, and G. Burri. Zinc diffusion in GaAs and zinc-induced disordering of GaAs/AlGaAs multiple quantum wells : a multitechnique study. optical and quantum electronics, 23(7):789-804, 1991. [ DOI | Details ] R. Spycher, P. Stadelmann, and P. Buffat. Wedge TEM characterization of movpe GaInAs/InP layers, concentration grading at interfaces. Mat. Res. Soc. Symp. Proc., 198:135-140, 1990. [ DOI | Details ] J. Ganière, F. Reinhart, R. Spycher, A. Catana, P. Ruterana, P. Stadelmann, and P. Buffat. Characterization by transmission electron microscopy of wedge shaped semiconductor samples. journal de microscopie et de spectroscopie électroniques, 14:407-414, 1989. [ DOI | Details ] M. Flüeli, R. Spycher, P. Stadelmann, P. Buffat, and J. Borel. High resolution electron microscopy determination of the structure of small gold particles: observations and image simulation. journal de microscopie et de spectroscopie électroniques, 14(5):351-64, 1989. [ DOI | Details ] P. Buffat, J. Ganière, and P. Stadelmann. High resolution observation and image simulation cleaved wedges of III-V semiconductors. Materials research society Sym. Proc., 139:111-116, 1989. [ DOI | Details ] M. Flüeli, P. Buffat, and J. Borel. Real time high-resolution electron microscopy (HREM) observation of the coalescence of small gold particles. In Surface Science, volume 202 of Inst. Phys. Conf. Ser., pages 343-353, 1988. chercher. [ Details ] P. Buffat, J. Ganière, and P. Stadelmann. Transmission and reflection electron microscopy on cleaved edges of III-V multilayered structures in evaluation of Advanced Semiconductor Materials by Electron Microscopy. In NATO Workshop, pages 319-333. elctron microscopy, 1988. [ Details ] D. Steen, M. Guillemin, P. Buffat, and G. Litzistorf. Determination of asbestos fibres in air transmission electron microscopy as a reference method. atmos environ, 17:2285-2297, 1983. [ DOI | Details ] R. Gotthardt, B. Guisolan, and P. Buffat. Low temperature "in situ" deformation in a 200 kV scanning transmission Electron Microscope. journal de microscopie et de spectroscopie électroniques, 4(5):587-594, 1979. [ DOI | Details ] C. Solliard and P. Buffat. Variation de la maille cristalline de petits cristaux d'or par effet de taille. J. de Physique, 38(7):c2-167, 1977. [ DOI | Details ] P. Buffat and J. Borel. Size effect on the melting temperature of gold particles. Phys. Rev. A, 13(6):2287-2298, 1976. [ DOI | Details ]

Skills HRTEM, WTEM, RTEM SEM Nanodiffraction EDS microanalysis Nanoparticles ...structure ...size effects ...e- irradiation ...phase identfication Biominerals ...hydroxyapatite,Ca-P Ti coatings ...nitridation, Ni-P CeO2/NLM precipitation TEM of III/V Phase transition ...perovskites Teaching Physics