The new Nion HERMES 200 is an aberration corrected, monochromated scanning transmission electron microscope (STEM) equipped with angle-resolved electron energy-loss spectroscopy (EELS), which is the first at a University Shared Facility.
Based on the new capabilities of this instrument, the UCI MRSEC team (Pan and Wu) demonstrated, for the first time, exotic atomic vibrations localized at a single stacking fault in cubic SiC, showing by an energy shift of 3.8 meV and an obvious intensity modulation of the acoustic phonon mode.
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Center for Complex and Active Materials
The primary mission of he MRSEC at UCI is to establish foundational knowledge in materials science and engineering of new classes of materials offering unique and broad functionality via an interplay among design, simulation, synthesis, and advanced characterization.