scholarly journals Hierarchical Structure of Magnetic Nanoparticles -Fe3O4- Ferrofluids Revealed by Small Angle X-Ray Scattering

2021 ◽  
Vol 21 (3) ◽  
pp. 635
Author(s):  
Gea Fitria ◽  
Arum Patriati ◽  
Mujamilah Mujamilah ◽  
Maria Christina Prihatiningsih ◽  
Edy Giri Rachman Putra ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Small Angle ◽  
Hierarchical Structures ◽  
Scattering Data ◽  
X Ray ◽  
Secondary Particles ◽  
Saxs Measurement ◽  
X Ray Scattering ◽  
Log Normal ◽  
Ray Scattering

Small-angle X-ray scattering (SAXS) experiments were set up to investigate the form and structure of Fe3O4 magnetic nanoparticles (MNPs) using BL1.3:SAXS at the Synchrotron Light Research Institute (SLRI) of Thailand in the range of scattering vector q, 0.7 < q (nm–1) < 4. The scattering data from samples, background, and empty cells were collected and then subtracted using small-angle X-ray scattering image tool (SAXSIT) software. The analysis of the corrected scattering patterns for four different pH, i.e., 2, 3, 4, and 5, has been revealed by applying log-normal spherical and mass fractal models calculation. The results showed that the SAXS measurement could investigate the hierarchical structures of MNPs Fe3O4 containing primary and secondary particles. The two-dimensional fractal (Df) aggregates as secondary particles (in volume) have various sizes ranging from 21 to 103 nm in diameter, confirming the correlation to their pH. Those structures consist of primary particles with a mean length of 2 nm in radius and the particle size distribution (σ) of 0.5.

scholarly journals Global Small-Angle X-ray Scattering Data Analysis of Triacylglycerols in the Molten State (Part I)

2018 ◽  
Vol 122 (45) ◽  
pp. 10320-10329 ◽  
Author(s):  
Amin Sadeghpour ◽  
Marjorie Ladd Parada ◽  
Josélio Vieira ◽  
Megan Povey ◽  
Michael Rappolt
Keyword(s):  
Data Analysis ◽  
Small Angle ◽  
Scattering Data ◽  
Molten State ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Molecular Structure of Sphingomyelin in Fluid Phase Bilayers Determined by the Joint Analysis of Small-Angle Neutron and X-ray Scattering Data

2020 ◽  
Vol 124 (25) ◽  
pp. 5186-5200 ◽  
Author(s):  
Milka Doktorova ◽  
Norbert Kučerka ◽  
Jacob J. Kinnun ◽  
Jianjun Pan ◽  
Drew Marquardt ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Small Angle ◽  
Fluid Phase ◽  
Scattering Data ◽  
Joint Analysis ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Recent developments in small-angle X-ray scattering and hybrid method approaches for biomacromolecular solutions

2018 ◽  
Vol 2 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Martin A. Schroer ◽  
Dmitri I. Svergun
Keyword(s):  
Small Angle ◽  
Scattering Data ◽  
Quality Data ◽  
Biological Macromolecules ◽  
Ambient Conditions ◽  
X Ray ◽  
X Ray Scattering ◽  
Analysis Methods ◽  
Recent Developments ◽  
Ray Scattering

Small-angle X-ray scattering (SAXS) has become a streamline method to characterize biological macromolecules, from small peptides to supramolecular complexes, in near-native solutions. Modern SAXS requires limited amounts of purified material, without the need for labelling, crystallization, or freezing. Dedicated beamlines at modern synchrotron sources yield high-quality data within or below several milliseconds of exposure time and are highly automated, allowing for rapid structural screening under different solutions and ambient conditions but also for time-resolved studies of biological processes. The advanced data analysis methods allow one to meaningfully interpret the scattering data from monodisperse systems, from transient complexes as well as flexible and heterogeneous systems in terms of structural models. Especially powerful are hybrid approaches utilizing SAXS with high-resolution structural techniques, but also with biochemical, biophysical, and computational methods. Here, we review the recent developments in the experimental SAXS practice and in analysis methods with a specific focus on the joint use of SAXS with complementary methods.

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