[HTML][HTML] Coherent diffraction imaging of cells at advanced X-ray light sources

J Fan, J Zhang, Z Liu - TrAC Trends in Analytical Chemistry, 2024 - Elsevier
The complex cellular structures maintain the biological activities of cells. Revealing the
structure of cells at the nanoscale is of great significance for cell biology. Coherent X-ray …

PyNX: high-performance computing toolkit for coherent X-ray imaging based on operators

V Favre-Nicolin, G Girard, S Leake… - Journal of Applied …, 2020 - journals.iucr.org
The open-source PyNX toolkit has been extended to provide tools for coherent X-ray
imaging data analysis and simulation. All calculations can be executed on graphical …

Binaryrelax: A relaxation approach for training deep neural networks with quantized weights

P Yin, S Zhang, J Lyu, S Osher, Y Qi, J Xin - SIAM Journal on Imaging …, 2018 - SIAM
We propose BinaryRelax, a simple two-phase algorithm, for training deep neural networks
with quantized weights. The set constraint that characterizes the quantization of weights is …

High-throughput 3d ensemble characterization of individual core–shell nanoparticles with x-ray free electron laser single-particle imaging

DH Cho, Z Shen, Y Ihm, DH Wi, C Jung, D Nam… - ACS …, 2021 - ACS Publications
The structures as building blocks for designing functional nanomaterials have fueled the
development of versatile nanoprobes to understand local structures of noncrystalline …

Inverted nucleation for photoinduced nonequilibrium melting

J Hwang, Y Ihm, D Nam, J Shin, E Park, SY Lee… - Science …, 2024 - science.org
Ultrafast photoinduced melting provides an essential platform for studying nonequilibrium
phase transitions by linking the kinetics of electron dynamics to ionic motions. Knowledge of …

Computational microscopy beyond perfect lenses

X Lu, M Pham, E Negrini, D Davis, SJ Osher, J Miao - Physical Review E, 2024 - APS
We demonstrate that in situ coherent diffractive imaging (CDI), which leverages the coherent
interference between strong and weak beams to illuminate static and dynamic structures …

Fast and robust phase retrieval for masked coherent diffractive imaging

L Song, EY Lam - Photonics Research, 2022 - opg.optica.org
Conventional phase retrieval algorithms for coherent diffractive imaging (CDI) require many
iterations to deliver reasonable results, even using a known mask as a strong constraint in …

[图书][B] Geometry of the Phase Retrieval Problem: Graveyard of Algorithms

AH Barnett, CL Epstein, L Greengard, J Magland - 2022 - books.google.com
Recovering the phase of the Fourier transform is a ubiquitous problem in imaging
applications from astronomy to nanoscale X-ray diffraction imaging. Despite the efforts of a …

Deep-learning real-time phase retrieval of imperfect diffraction patterns from X-ray free-electron lasers

SY Lee, DH Cho, C Jung, D Sung, D Nam… - arXiv preprint arXiv …, 2024 - arxiv.org
Machine learning is attracting surging interest across nearly all scientific areas by enabling
the analysis of large datasets and the extraction of scientific information from incomplete …

Stochastic chromatin packing of 3D mitotic chromosomes revealed by coherent X-rays

D Sung, C Lim, M Takagi, C Jung… - Proceedings of the …, 2021 - National Acad Sciences
DNA molecules are atomic-scale information storage molecules that promote reliable
information transfer via fault-free repetitions of replications and transcriptions. Remarkable …