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Electron fourier ptychography for phase reconstruction. [PDF]
Sci RepZhao J +12 more
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Scientific Reports, 2015 AbstractWe report an experimental ptychography measurement performed in fly-scan mode. With a visible-light laser source, we demonstrate a 5-fold reduction of data acquisition time. By including multiple mutually incoherent modes into the incident illumination, high quality images were successfully reconstructed from blurry diffraction patterns.
Xiaojing Huang +7 more
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Simulation Study of Low-Dose 4D-STEM Phase Contrast Techniques at the Nanoscale in SEM [PDF]
NanomaterialsPhase contrast imaging is well-suited for studying weakly scattering samples. Its strength lies in its ability to measure how the phase of the electron beam is affected by the sample, even when other imaging techniques yield low contrast.
Zvonimír Jílek +2 more
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Single-pixel ptychography [PDF]
Optics Letters, 2021 Ptychography is a predominant non-interferometric technique to image large complex fields but with quite a narrow working spectrum, because diffraction measurements require dense array detection with an ultra-high dynamic range. Here we report a single-pixel ptychography technique that realizes non-interferometric and non-scanning complex-field imaging
Meng Li +8 more
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Upgrade of the Coherent X-ray Scattering beamline at Pohang Light Source II. [PDF]
J Synchrotron RadiatComprehensive upgrades to optics, detectors and the endstation at the CXS beamline have transformed its coherent diffraction imaging performance, enabling routine Bragg coherent diffraction imaging and microbeam diffraction, and adding the capability for transmission geometry nano‐imaging via ptychography.The Coherent X‐ray Scattering beamline at the ...
Ham D, Nam D, Song C, Lee SY.
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A modular software framework for the design and implementation of ptychography algorithms [PDF]
PeerJ Computer Science, 2022 Computational methods are driving high impact microscopy techniques such as ptychography. However, the design and implementation of new algorithms is often a laborious process, as many parts of the code are written in close-to-the-hardware programming ...
Francesco Guzzi +5 more
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Periodic Artifacts Generation and Suppression in X-ray Ptychography
Photonics, 2023 As a unique coherent diffraction imaging method, X-ray ptychography has an ultrahigh resolution of several nanometers for extended samples. However, ptychography is often degraded by various noises that are mixed with diffracted signals on the detector ...
Shilei Liu +7 more
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High-speed free-run ptychography at the Australian Synchrotron
Journal of Synchrotron Radiation, 2022 Over the last decade ptychography has progressed rapidly from a specialist ultramicroscopy technique into a mature method accessible to non-expert users.
Michael W. M. Jones +8 more
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Optics Letters, 2018 We realized a phase retrieval technique using terahertz (THz) radiation as an alternative to THz digital holography, named THz ptychography. Ptychography has been used in x-ray imaging as a groundbreaking improvement of conventional coherent diffraction imaging. Here we show that ptychography can be performed at THz frequencies too. We reconstructed an
Lorenzo Valzania +3 more
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