Resources

Showing 1-10 of 27
  • Media Image
    This work was performed in collaboration with Dr. Phil Rice and Dr. Teya Topuria of IBM Almaden Research Center in San Jose, CA who provided expert assistance as well as the TEM specimen and access to their microscope facilities.

    Colorized EELS elemental map of Ti L2,3-edges at 456 eV (green), Mn L2,3-edges at 640 eV (blue), La M4,5-edges at 832 eV (purple) and Sr L2,3-edges at 1940 eV (red).

  • Media Image

    The HAADF signal (left) contrast is easily interpreted in terms of mass thickness of the material while the diffraction contrast MAADF signal (right) reveals highly detailed structural changes in the material. The optimized geometry makes this possible.

  • Media Image
    Data courtesy of Dr. Maria Aronova and Dr. Richard Leapman, National Institutes of Health, Bethesda, Maryland.

    Image of phosphorus-containing macromolecular assemblies in the cell nuclei of drosophila larvae; dual-axis EFTEM tilt series acquired with a Tridiem energy filter from -66˚ to 66˚; for each axis phosphorus L-23 series (20 eV slit, pre-edge and post-edge) were collected; a jump-ratio series was c

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Microscope and sample courtesy of Dr. Maria Varela at Oak Ridge National Lab, Oak Ridge, TN

    EELS data were acquired using a probe-corrected NION Ultrastem 200 TEM/STEM microscope equipped with C-FEG emission gun and a fully loaded Enfinium™ ER system.

    Methods

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Dr. Li Zhou at Ames Lab, Iowa

    EELS data taken using a FEI F20 TEM/STEM microscope equipped with S-FEG emission gun and a fully loaded GIF Quantum® ER system.

    Methods

    Voltage: 200 kV; data taken in STEM mode; EELS spectrum (300 – 2300 eV) exposure time: 8 ms; total exposure time:

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc.

    EELS data taken using a FEI F20 TEM/STEM microscope equipped with S-FEG emission gun and a fully loaded GIF Quantum® ER system.

    Methods

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc.

    The EELS analysis shows how Pd particles chemically interact with support.

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Professor Ramachandra Rao at Indian Institute of Technology, Chennai Madras, India Microscope courtesy of Dr. Giuseppe Nicotra at IMM-CNR, Catania, Italy

    Fe-O atoms are arranged in alternating tetrahedral and octahedral planes that can be distinguished looking at the fine structure of the O K-edge at 532 eV.

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Dr. P. Rice and Dr. T. Topuria at IBM (Almaden), San Jose, CA Microscope courtesy of Dr. Giuseppe Nicotra, IMM-CNR, Catania, Italy

    The lab where EELS maps were taken is situated at the slopes of Mount Etna in Sicily, Italy. Mount Etna is the highest active volcano in Europe. The EELS elemental maps were taken at high speed during major volcano eruption, as shown in the volcano webcam photograph above the maps.

  • Media Image
    Paolo Longo, Ph.D., Gatan, Inc. Sample courtesy of Dr. Giuseppe Nicotra at IMM-CNR, Catania, Italy Microscope courtesy of Dr. Giuseppe Nicotra at IMM-CNR, Catania, Italy

    Methods

Pages