Publications de Manuel Guizar Sicairos

Cretaceous Chert-hosted Microfossils Visualized with Synchrotron Ptychographic X-ray Computed Tomography (PXCT)

Silicification of microfossils is an important taphonomic process that provides a record of microbial life across a range of environments throughout Earth history. However, questions remain regarding the mechanism(s) by which silica precipitated and preser ...

WILEY2025

Fast Small-angle X-ray Scattering Tensor Tomography: an Outlook Into Future Applications in Life Sciences

Marianne Liebi, Manuel Guizar Sicairos

Small Angle-X-ray Scattering Tensor Tomography (SAS-TT) is a relatively new but powerful technique for studying the multiscale architecture of hierarchical structures particularly relevant to life science applications. Currently, the technique is very dema ...

WILEY-V C H VERLAG GMBH2025

Dynamic change of calcium-rich compartments during coccolithophore biomineralization

Manuel Guizar Sicairos

Coccolithophores are abundant marine phytoplankton that produce biomineralized calcite scales, called coccoliths, which sequester substantial amounts of carbon and play a substantial role in biogeochemical cycles. However, mechanisms underlying the storage ...

American Association for the Advancement of Science (AAAS)2025

Single-shot x-ray ptychography as a structured illumination method

Manuel Guizar Sicairos

Single-shot ptychography is a quantitative phase imaging method wherein overlapping beams of light arranged in a grid pattern simultaneously illuminate a sample, allowing a full ptychographic dataset to be collected in a single shot. It is primarily used a ...

Optica Publishing Group2025

Experimental comparison of X-ray ptychographic and holographic nanotomography of metal-stained neuronal tissue

Manuel Guizar Sicairos

Hard X-ray nanotomography is a promising technology for nondestructive imaging of biological tissues with three-dimensional isotropic resolution. The implementation of fourth-generation synchrotron sources brings coherent X-ray microscopy to the central st ...

Optica Publishing Group2025

Ptychoscopy: a user friendly experimental design tool for ptychography

Manuel Guizar Sicairos

Electron ptychography is a rapidly growing diffractive imaging technique providing superior image contrast, high resolution, efficient dose usage and versatile imaging conditions. Originally coming from the physical sciences, it has also become a method of ...

2025

Process-Induced Structures of Injection-Molded High-Density Polyethylene-Combining X-ray Scattering and Finite Element Modeling

Marianne Liebi, Manuel Guizar Sicairos

The success of plastics heavily relies on fast melt processing methods used for large-scale industrial manufacturing, including injection molding. The hierarchical structure of the solid polymer depends on material selection combined with processing condit ...

Amer Chemical Soc2024

High-performance 4-nm-resolution X-ray tomography using burst ptychography

Gabriel Aeppli, Manuel Guizar Sicairos

Advances in science, medicine and engineering rely on breakthroughs in imaging, particularly for obtaining multiscale, three-dimensional information from functional systems such as integrated circuits or mammalian brains. Achieving this goal often requires ...

NATURE PORTFOLIO2024

Operando Scanning Small-/Wide-Angle X-ray Scattering for Polymer Electrolyte Fuel Cells: Investigation of Catalyst Layer Saturation and Membrane Hydration- Capabilities and Challenges

Manuel Guizar Sicairos

Polymer electrolyte fuel cells are an essential technology for future local emission-free mobility. One of the critical challenges for thriving commercialization is water management in the cells. We propose small- and wide-angle X-ray scattering as a suita ...

Amer Chemical Soc2024

Hard x-ray grazing-incidence ptychography: large field-of-view nanostructure imaging with ultra-high surface sensitivity

Manuel Guizar Sicairos

The morphology and distribution of nanoscale structures, such as catalytic active nanoparticles and quantum dots on surfaces, have a significant impact on their function. Thus, the capability of monitoring these properties during manufacturing and operatio ...

Optica Publishing Group2024