Manuel Guizar Sicairos

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Publications associées (21)

Newcomer’s Guide into Optimal Data Acquisition for Electron Ptychography

Manuel Guizar Sicairos

2024

X-ray linear dichroic tomography of crystallographic and topological defects

Manuel Guizar Sicairos

The functionality of materials is determined by their composition(1-4) and microstructure, that is, the distribution and orientation of crystalline grains, grain boundaries and the defects within them(5,6). Until now, characterization techniques that map t ...

NATURE PORTFOLIO2024

Dynamic sparse x-ray nanotomography reveals ionomer hydration mechanism in polymer electrolyte fuel-cell catalyst

Manuel Guizar Sicairos

Tomographic imaging of time-evolving samples is a challenging yet important task for various research fields. At the nanoscale, current approaches face limitations of measurement speed or resolution due to lengthy acquisitions. We developed a dynamic nanot ...

AMER ASSOC ADVANCEMENT SCIENCE2024

Unveiling Challenging Microbial Fossil Biosignatures from Rio Tinto with Micro-to-Nanoscale Chemical and Ultrastructural Imaging

Manuel Guizar Sicairos

Understanding the nature and preservation of microbial traces in extreme environments is crucial for reconstructing Earth's early biosphere and for the search for life on other planets or moons. At Rio Tinto, southwestern Spain, ferric oxide and sulfate de ...

MARY ANN LIEBERT, INC2024

Microporous transport layers facilitating low iridium loadings in polymer electrolyte water electrolysis

Manuel Guizar Sicairos

Minimizing the power-specific iridium loading in polymer electrolyte water electrolysis (PEWE) is essential for the commercialization and upscaling of this technology. However, decreasing the iridium loading can severely affect performance and stability. M ...

ROYAL SOC CHEMISTRY2024

Small-angle scattering tensor tomography algorithm for robust reconstruction of complex textures

Marianne Liebi, Manuel Guizar Sicairos

The development of small-angle scattering tensor tomography has enabled the study of anisotropic nanostructures in a volume-resolved manner. It is of great value to have reconstruction methods that can handle many different nanostructural symmetries. For s ...

Int Union Crystallography2023

Accelerated deep self-supervised ptycho-laminography for three-dimensional nanoscale imaging of integrated circuits

Manuel Guizar Sicairos, Yi Jiang

Three-dimensional inspection of nanostructures such as integrated circuits is important for security and reliability assurance. Two scanning operations are required: ptychographic to recover the complex transmissivity of the specimen, and rotation of the s ...

2023

Scanning Small-Angle X-ray Scattering of Injection-Molded Polymers: Anisotropic Structure and Mechanical Properties of Low-Density Polyethylene

Marianne Liebi, Manuel Guizar Sicairos

Injection molding is known to create a layered anisotropicmorphologyacross the sample thickness due to varying shear and cooling ratesduring the manufacturing process. In this study, scanning small-angleX-ray scattering was used to visualize and quantify t ...

AMER CHEMICAL SOC2023

Towards multiscale X-ray tomographic imaging in membrane science - A perspective

Manuel Guizar Sicairos

Tomographic X-ray imaging techniques offer novel opportunities for studying membranes and membrane processes in 3D on a spatial resolution not seen before. Traditional 2D imaging techniques used to characterise membranes have limitations that can be overco ...

2023