Search Results - "FUOSS, P. H"
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High-resolution three-dimensional structural microscopy by single-angle Bragg ptychography
Published in Nature materials (01-02-2017)“…Coherent X-ray microscopy by phase retrieval of Bragg diffraction intensities enables lattice distortions within a crystal to be imaged at nanometre-scale…”
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Towards ultrafast dynamics with split-pulse X-ray photon correlation spectroscopy at free electron laser sources
Published in Nature communications (27-04-2018)“…One of the important challenges in condensed matter science is to understand ultrafast, atomic-scale fluctuations that dictate dynamic processes in equilibrium…”
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3
Quantitative Nanoscale Imaging of Lattice Distortions in Epitaxial Semiconductor Heterostructures Using Nanofocused X‑ray Bragg Projection Ptychography
Published in Nano letters (10-10-2012)“…We imaged nanoscale lattice strain in a multilayer semiconductor device prototype with a new X-ray technique, nanofocused Bragg projection ptychography…”
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4
Three Dimensional Variable-Wavelength X-Ray Bragg Coherent Diffraction Imaging
Published in Physical review letters (23-11-2016)“…We present and demonstrate a formalism by which three-dimensional (3D) Bragg x-ray coherent diffraction imaging (BCDI) can be implemented without moving the…”
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5
Reversible chemical switching of a ferroelectric film
Published in Physical review letters (30-01-2009)“…According to recent experiments and predictions, the orientation of the polarization at the surface of a ferroelectric material can affect its surface…”
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6
Imaging local polarization in ferroelectric thin films by coherent x-ray Bragg projection ptychography
Published in Physical review letters (25-04-2013)“…We used x-ray Bragg projection ptychography (BPP) to map spatial variations of ferroelectric polarization in thin film PbTiO3, which exhibited a striped…”
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7
High contrast x-ray speckle from atomic-scale order in liquids and glasses
Published in Physical review letters (02-11-2012)“…The availability of ultrafast pulses of coherent hard x rays from the Linac Coherent Light Source opens new opportunities for studies of atomic-scale dynamics…”
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Single shot spatial and temporal coherence properties of the SLAC Linac Coherent Light Source in the hard x-ray regime
Published in Physical review letters (11-01-2012)“…We measured the transverse and longitudinal coherence properties of the Linac Coherent Light Source (LCLS) at SLAC in the hard x-ray regime at 9 keV photon…”
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Stabilization of monodomain polarization in ultrathin PbTiO3 films
Published in Physical review letters (31-03-2006)“…Using in situ high-resolution synchrotron x-ray scattering, the Curie temperature TC has been determined for ultrathin c-axis epitaxial PbTiO3 films on…”
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10
Single shot speckle and coherence analysis of the hard X-ray free electron laser LCLS
Published in Optics express (21-10-2013)“…The single shot based coherence properties of hard x-ray pulses from the Linac Coherent Light Source (LCLS) were measured by analyzing coherent diffraction…”
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11
Real-time x-ray studies of crystal growth modes during metal-organic vapor phase epitaxy of GaN on c- and m-plane single crystals
Published in Applied physics letters (04-08-2014)“…Non-polar orientations of III-nitride semiconductors have attracted significant interest due to their potential application in optoelectronic devices with…”
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12
Interfacial charge and strain effects on the ferroelectric behavior of epitaxial (001) PbTiO3 films on (110) DyScO3 substrates
Published in Applied physics letters (31-03-2014)“…In-situ synchrotron x-ray observations reveal that the ferroelectric behavior of epitaxial (001) PbTiO3 thin films grown on (110) DyScO3 substrates depends on…”
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13
Direct structural determination in ultrathin ferroelectric films by analysis of synchrotron x-ray scattering measurements
Published in Physical review. B, Condensed matter and materials physics (01-04-2005)“…In order to better understand ferroelectricity in thin films, it is important to explore the atomic-scale structure and the spatial distribution of…”
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14
Clocking femtosecond X rays
Published in Physical review letters (25-03-2005)“…Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However,…”
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15
X-ray diffuse scattering measurements of nucleation dynamics at femtosecond resolution
Published in Physical review letters (04-04-2008)“…Femtosecond time-resolved small and wide angle x-ray diffuse scattering techniques are applied to investigate the ultrafast nucleation processes that occur…”
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16
Equilibrium polarization of ultrathin PbTiO3 with surface compensation controlled by oxygen partial pressure
Published in Physical review letters (25-10-2011)“…We present a synchrotron x-ray study of the equilibrium polarization structure of ultrathin PbTiO(3) films on SrRuO(3) electrodes epitaxially grown on SrTiO(3)…”
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17
Island dynamics and anisotropy during vapor phase epitaxy of m-plane GaN
Published in Applied physics letters (04-12-2017)“…Using in situ grazing-incidence x-ray scattering, we have measured the diffuse scattering from islands that form during layer-by-layer growth of GaN by…”
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18
Ferroelectricity in ultrathin BaTiO3 films: probing the size effect by ultraviolet Raman spectroscopy
Published in Physical review letters (23-10-2009)“…We demonstrate the dramatic effect of film thickness on the ferroelectric phase transition temperature Tc in strained BaTiO3 films grown on SrTiO3 substrates…”
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In-situ synchrotron x-ray studies of the microstructure and stability of In2O3 epitaxial films
Published in Applied physics letters (16-10-2017)“…We report on the synthesis, stability, and local structure of In2O3 thin films grown via rf-magnetron sputtering and characterized by in-situ x-ray scattering…”
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In situ X-ray studies of vapor phase epitaxy of PbTiO3
Published in Physica. B, Condensed matter (01-08-2003)“…As part of a program to understand and control the structure of ferroelectric thin films grown by metal organic vapor phase epitaxy (MOVPE), we have used X-ray…”
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