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  • EELS color map of a Pt/Fe catalyst nanoparticle
    Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Professor Gianluigi Botton at CCEM, Hamilton, ON, Canada Microscope courtesy of CCEM, Hamilton, ON, Canada Acknowledgement to Dr. M. Bugnet at CCEM for helping set up microscope for experiment.

    Pt/Fe nanocatalysts are among the most promising candidates for accelerating oxygen reduction reaction occurring at the cathode in a proton exchange membrane fuel cell.

  • EELS color map of a Pt/Au catalyst nanoparticle
    Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Professor Gianluigi Botton at CCEM, Hamilton, ON, Canada Microscope courtesy of CCEM, Hamilton, ON, Canada Acknowledgement to Dr. Andreas Korinek at CCEM for helping set up microscope for experiment.

    EELS data taken using a probe and image-corrected FEI Titan TEM/STEM microscope equipped with X-FEG emission gun and a fully loaded GIF Quantum® ERS system. Au M4,5-edges at 2206 eV (red) and Pt M4,5-edges at 2206 eV (red).
    Methods

  • Plasmon peak position map going from diamond (yellow) to amorphous carbon (blue)

    Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Dr. Jaco Oliver at NMMU, Port Elizabeth, South Africa Microscope courtesy of NMMU, Port Elizabeth, South Africa

    Analysis of the changes in local carbon structure caused by self-implantation of carbon into diamond and chemistry.

  • EELS color map of a magnetic device
    Media Image
    Paolo Longo, Ph.D., Gatan, Inc.

    Legend

    Cu L at 931 eV (grey); O K at 532 eV (red); N K at 401 eV (light blue); Ti L at 456 eV (green); Co L at 779 eV (blue)

  • EELS color map of a Pd/Au catalyst particle
    Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Professor Jianfang’s group, Chinese University, Hong Kong Microscope courtesy of IBM, Fishkill, NY

    Pd/Au alloys have attracted a lot of interest due to their resistance at high temperatures, and this explains their use in several fields, such as CO and hydrocarbon oxidation, synthesis of vinyl acetate monomer, hydrocarbon hydrogenation, and many others.

  • Electronic structure of supelattice and twin in Ga doped ZnO measured by monochromated EELS

    Publication
    Microscopy and Microanalysis
    Chang, H.; Yoon, S.; Seong, T.; Yu, T.; Yuo, Y.; Ahn, J.

  • Orientation dependence of shock-induced twinning and substructures in a copper bicrystal

    Publication
    Acta Materialia
    Cao, F.; Beyerlein, I. J.; Addessio, F. L.; Sencer, B. H.; Trujillo, C. P.; Cerreta, E. K.; Gray III, G. T.

    Shock recovery experiments have been conducted to assess the role of shock stress and orientation dependence on substructure evolution and deformation twinning of a [1 0 0]/ copper bicrystal.

  • Measuring the thickness of aluminium alloy thin foils using electron energy loss spectroscopy

    Publication
    Materials Characterization
    Bardal, A.; Lie, K.

    Combining electron energy loss spectroscopy and convergent beam electron diffraction measurements, we have determined the mean-free-path for inelastic electron scattering for four different aluminium alloys.

  • D-STEM: A parallel electron diffraction technique applied to nanomaterials

    Publication
    Microscopy and Microanalysis
    Ganesh, K. J.; Kawasaki, M.; Zhou, J. P.; Ferreira, P. J.

    An electron diffraction technique called D-STEM has been developed in a transmission electron microscopy/scanning transmission electron microscopy (TEM/STEM) instrument to obtain spot electron diffraction patterns from nanostructures, as small as ∼3 nm.

  • Four-dimensional electron microscopy

    Publication
    Science
    Zewail, A. H.

    The discovery of the electron over a century ago and the realization of its dual character have given birth to one of the two most powerful imaging instruments: the electron microscope.

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