Andi Barbour
Argonne National Laboratory
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Publication
Featured researches published by Andi Barbour.
Applied Physics Letters | 2011
Michael S. Pierce; Daniel Hennessy; Kee-Chul Chang; Vladimir Komanicky; Joseph Strzalka; Alec Sandy; Andi Barbour; Hoydoo You
We observed well-defined oscillations of speckle intensities from Pt (001) surfaces at high temperatures, persisting for tens of minutes. We used a model of hex-reconstructed terraces to show that the coherent x-rays reflected from the terraces retain their phases relative to the illumination boundary and the observed oscillations come from surface dynamics due to “step-flow” motion. Our results demonstrate a possibility that x-ray speckles can be applied to monitor the real-time evolution of surfaces.
Applied Physics Letters | 2015
Chenhui Zhu; Ross Harder; Ana Diaz; Vladimir Komanicky; Andi Barbour; Ruqing Xu; Xiaojing Huang; Yaohua Liu; Michael S. Pierce; Andreas Menzel; Hoydoo You
Ptychography is a high-resolution imaging technique, which does not require lenses for image magnification and which provides phase contrast with high sensitivity. Here, we propose to use x-ray ptychography for the imaging of surface structure in crystalline samples. We show that ptychography can be used to image atomic step structures using coherent diffraction patterns recorded along the crystal truncation rod of a crystal surface. In a proof-of-concept experiment on a Pt (111) sample, we present ptychographic reconstructions showing features consistent with surface steps. Due to the penetration power of x-rays, this method could find interesting applications for the study of surface structures under buried interfaces or in harsh environments.
Electrochimica Acta | 2012
Hoydoo You; Michael S. Pierce; Vladimir Komanicky; Andi Barbour; Chenhui Zhu
Physical Chemistry Chemical Physics | 2015
Robert M. Karl; Andi Barbour; Vladimir Komanicky; Chenhui Zhu; Alec Sandy; Michael S. Pierce; Hoydoo You
Physical Review B | 2012
Michael S. Pierce; Andi Barbour; Vladimir Komanicky; Daniel Hennessy; Hoydoo You
219th ECS Meeting | 2011
Michael S. Pierce; Vladimir Komanicky; Andi Barbour; Daniel Hennessy; J-D Su; Alec Sandy; Chenhui Zhu; Hoydoo You
Physical Review B | 2016
Andi Barbour; Ahmet Alatas; Yuzi Liu; Chenhui Zhu; Bogdan M. Leu; X. F. Zhang; Alec Sandy; Michael S. Pierce; Xueyun Wang; S.-W. Cheong; Hoydoo You
Nanoscale Research Letters | 2014
Vladimir Komanicky; Andi Barbour; Miroslava Lackova; Milena Zorko; Chenhui Zhu; Michael S. Pierce; Hoydoo You
Bulletin of the American Physical Society | 2016
Michael S. Pierce; Andrew Loheac; Andi Barbour; Vladimir Komanicky; Anthony Ruffino; Hoydoo You
Meeting Abstracts | 2011
Michael S. Pierce; V. Komancky; Andi Barbour; Daniel Hennessy; J-D Su; Alec Sandy; Hoydoo You