Elena Starodub

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We elucidate how graphene bilayers form on Ir(111). Low-energy electron diffraction (LEED) reveals that the two graphene layers are not always rotationally aligned. Monitoring this misalignment during growth shows that second-layer islands nucleate between the existing layer and the substrate. This mechanism occurs both when C segregates from the Ir and(More)
Y. Murata,1 S. Nie,2 A. Ebnonnasir,3 E. Starodub,2 B. B. Kappes,3 K. F. McCarty,2 C. V. Ciobanu,3,* and S. Kodambaka1,† 1Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, California 90095, USA 2Sandia National Laboratories, Livermore, California 94550, USA 3Department of Mechanical Engineering and Materials(More)
We study how the (100) surface of magnetite undergoes oxidation by monitoring its morphology during exposure to oxygen at ~650 °C. Low-energy electron microscopy reveals that magnetite's surface steps advance continuously. This growth of Fe3O4 crystal occurs by the formation of bulk Fe vacancies. Using Raman spectroscopy, we identify the sinks for these(More)
Calcitrin (3 units intramuscularly; course--15-18 injections) was used in the treatment of 59 patients with gastric and duodenal ulcer along with routine therapy. The efficacy of treatment was evaluated by dynamic endoscopic determination of ulcer reparation and normalization of the level of regulatory peptides. Results indicate that calcitrin treatment was(More)