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Ptychography in anisotropic media [PDF]
Optics Letters, 2015 This letter describes ptychography in the context of polarized light probing anisotropic specimen (i.e., showing properties of birefringence and/or diattenuation). We established an optimization strategy using a vectorial formalism. We propose a measurement scheme using a set of linearly polarized probes and linear polarization analyzers, which allows ...
Patrick, Ferrand +2 more
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Ptychography at the carbon K-edge
Communications Materials, 2022 Ptychography is an imaging technique based on algorithmic reconstruction of diffraction patterns that improves the spatial resolution of scanning transmission X-ray microscopy. Here, the possibility of ptychography at the carbon K-edge is demonstrated on
Nicolas Mille +8 more
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Ten implementations of ptychography [PDF]
Journal of Microscopy, 2017 SummaryPtychography is an increasingly popular phase retrieval imaging technique, able to routinely deliver quantitative phase images with extended field of view at diffraction limited resolution. Different variants of this technique, like Bragg ptychography and Fourier ptychography, have also been developed and applied to various fields.
Li, P., Maiden, A.M.
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IEEE Photonics Journal, 2023 Fourier ptychography (FP) is a computational imaging technique with the advantage that it can obtain large field-of-view (FOV) and high-resolution (HR) imaging.
Baopeng Li +6 more
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Snapshot ptychography on array cameras
Optics Express, 2022 We use convolutional neural networks to recover images optically down-sampled by 6.7 × using coherent aperture synthesis over a 16 camera array. Where conventional ptychography relies on scanning and oversampling, here we apply decompressive neural estimation to recover full resolution image from a single snapshot, although as shown in simulation ...
Chengyu Wang +4 more
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, 2019 Ptychography is a computational imaging technique. A detector records an extensive data set consisting of many inference patterns obtained as an object is displaced to various positions relative to an illumination field. A computer algorithm of some type is then used to invert these data into an image.
John Rodenburg, Andrew Maiden
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Molecules, 2022 A series of regioisomers of the hydroxystearic acid (HSA) was prepared, and the effect of the position of the hydroxyl group along the chain on a panel of human cancer cell lines was investigated.
Natalia Calonghi +9 more
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Designer Moiré Quantum Materials Enabled by Freestanding Oxide Membranes in Twisted and Hybrid Bilayers. [PDF]
Adv Sci (Weinh)Freestanding oxide membranes transform twistronics by enabling deterministic stacking, strain release, and integration with two‐dimensional materials. A unified framework links local atomic registry to structural reconstruction, polar textures, charge modulation, flat bands, and magnetic responses, while identifying the fabrication and characterization
Kaur P, Rahul, Yang JC.
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Deep reinforcement learning for data-driven adaptive scanning in ptychography
Scientific Reports, 2023 We present a method that lowers the dose required for an electron ptychographic reconstruction by adaptively scanning the specimen, thereby providing the required spatial information redundancy in the regions of highest importance. The proposed method is
Marcel Schloz +6 more
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Improved resolution Fourier ptychography scheme using oil‐filled dome‐shaped LED array
Electronics Letters, 2022 Utilising angular‐varied illumination in Fourier Ptychography, the resolution of optical microscopes can be increased and the phase of the sample can also be recovered while maintaining a wide field‐of‐view.
Mahdieh Gholami Mayani +3 more
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