Results 1 to 10 of about 7,202 (228)

Advanced Denoising for X-ray Ptychography [PDF]

open access: yes, 2019
The success of ptychographic imaging experiments strongly depends on achieving high signal-to-noise ratio. This is particularly important in nanoscale imaging experiments when diffraction signals are very weak and the experiments are accompanied by ...
Chang, Huibin   +9 more
core   +4 more sources

System calibration method for Fourier ptychographic microscopy

open access: yes, 2017
Fourier ptychographic microscopy (FPM) is a recently proposed quantitative phase imaging technique with high resolution and wide field-of-view (FOV).
Dan, Dan   +6 more
core   +1 more source

Deep learning approach to Fourier ptychographic microscopy [PDF]

open access: yes, 2018
Convolutional neural networks (CNNs) have gained tremendous success in solving complex inverse problems. The aim of this work is to develop a novel CNN framework to reconstruct video sequences of dynamic live cells captured using a computational ...
Li, Yunzhe   +4 more
core   +1 more source

Inverse scattering for reflection intensity phase microscopy [PDF]

open access: yes, 2019
Reflection phase imaging provides label-free, high-resolution characterization of biological samples, typically using interferometric-based techniques.
Chaumet, Patrick C.   +4 more
core   +3 more sources

The PERCIVAL detector: first user experiments

open access: yesJournal of Synchrotron Radiation, 2023
The PERCIVAL detector is a CMOS imager designed for the soft X-ray regime at photon sources. Although still in its final development phase, it has recently seen its first user experiments: ptychography at a free-electron laser, holographic imaging at a ...
J. Correa   +42 more
doaj   +1 more source

First X-ray spectral ptychography and resonant ptychographic computed tomography experiments at the SWING beamline from Synchrotron SOLEIL

open access: yesJournal of Synchrotron Radiation
X-ray ptychography and ptychographic computed tomography have seen a rapid rise since the advent of fourth-generation synchrotrons with a high degree of coherent radiation.
Anico Kulow   +7 more
doaj   +1 more source

Quantitative imaging of anisotropic material properties with vectorial ptychography

open access: yes, 2018
Following the recent establishment of the formalism of vectorial ptychography [Ferrand et al., Opt. Lett. 40, 5144 (2015)], first measurements are reported in the optical range, demonstrating the capability of the proposed method to map the four ...
Allain, Marc   +3 more
core   +3 more sources

Ptychographic reconstruction algorithm for frequency resolved optical gating: super-resolution and supreme robustness

open access: yes, 2016
Frequency-resolved optical gating (FROG) is probably the most popular technique for complete characterization of ultrashort laser pulses. In FROG, a reconstruction algorithm retrieves the pulse from a measured spectrogram, yet current FROG reconstruction
Avnat, Zohar   +3 more
core   +1 more source

py4DSTEM: a software package for multimodal analysis of four-dimensional scanning transmission electron microscopy datasets [PDF]

open access: yes, 2020
Scanning transmission electron microscopy (STEM) allows for imaging, diffraction, and spectroscopy of materials on length scales ranging from microns to atoms.
Anapolsky, Abraham   +20 more
core   +1 more source

Deep learning in computational microscopy [PDF]

open access: yes, 2019
We propose to use deep convolutional neural networks (DCNNs) to perform 2D and 3D computational imaging. Specifically, we investigate three different applications. We first try to solve the 3D inverse scattering problem based on learning a huge number of
Nehmetallah, George   +2 more
core   +1 more source

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