scholarly journals Three-dimensional periodic complex structures in soft matter: investigation using scattering methods

2012 ◽  
Vol 2 (5) ◽  
pp. 589-601 ◽  
Author(s):  
Marianne Impéror-Clerc
Keyword(s):  
Soft Matter ◽  
Hexagonal Phase ◽  
Three Dimensional ◽  
Structural Models ◽  
Close Packing ◽  
Complex Structures ◽  
Structured Materials ◽  
X Ray ◽  
X Ray Scattering ◽  
Cubic Phases

Three-dimensional periodic complex structures are encountered in various soft matter systems such as liquid crystals, block-copolymer phases and the related nano-structured materials. Here, we review several well-defined topologies: two-dimensional hexagonal phase, three-dimensional packing of spheres, tetrahedral close packing ( tcp ) bi-continuous and tri-continuous cubic phases. We illustrate how small-angle X-ray scattering experiments help us to investigate these different structures and introduce the main available structural models based on both direct and inverse methods.

X-ray imaging with ultra-small-angle X-ray scattering as a contrast mechanism

2004 ◽  
Vol 37 (5) ◽  
pp. 757-765 ◽  
Author(s):  
L. E. Levine ◽  
G. G. Long
Keyword(s):  
Small Angle ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Sample Volume ◽  
Contrast Imaging ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Imaging ◽  
Contrast Mechanism ◽  
Ray Scattering

A new transmission X-ray imaging technique using ultra-small-angle X-ray scattering (USAXS) as a contrast mechanism is described. USAXS imaging can sometimes provide contrast in cases where radiography and phase-contrast imaging are unsuccessful. Images produced at different scattering vectors highlight different microstructural features within the same sample volume. When used in conjunction with USAXS scans, USAXS imaging provides substantial quantitative and qualitative three-dimensional information on the sizes, shapes and spatial arrangements of the scattering objects. The imaging technique is demonstrated on metal and biological samples.

scholarly journals Molecular bond selective x-ray scattering for nanoscale analysis of soft matter

2006 ◽  
Vol 89 (4) ◽  
pp. 044101 ◽  
Author(s):  
G. E. Mitchell ◽  
B. G. Landes ◽  
J. Lyons ◽  
B. J. Kern ◽  
M. J. Devon ◽  
...  
Keyword(s):  
Soft Matter ◽  
X Ray ◽  
X Ray Scattering ◽  
Molecular Bond ◽  
Ray Scattering

scholarly journals Structure of the manganese complex in photosystem II: insights from X–ray spectroscopy

2002 ◽  
Vol 357 (1426) ◽  
pp. 1347-1358 ◽  
Author(s):  
Vittal K. Yachandra
Keyword(s):  
Fine Structure ◽  
Emission Spectroscopy ◽  
Structural Models ◽  
Oxidation States ◽  
X Ray ◽  
X Ray Scattering ◽  
Raman Process ◽  
Mn Cluster ◽  
X Ray Absorption ◽  
S States

We have used Mn K–edge absorption and Kβ emission spectroscopy to determine the oxidation states of the Mn complex in the various S states. We have started exploring the new technique of resonant inelastic X–ray scattering spectroscopy; this technique can be characterized as a Raman process that uses K–edge energies (1s to 4p, ca . 6550 eV) to obtain L–edge–like spectra (2p to 3d, ca . 650 eV). The relevance of these data to the oxidation states and structure of the Mn complex is presented. We have obtained extended X–ray absorption fine structure data from the S 0 and S 3 states and observed heterogeneity in the Mn–Mn distances leading us to conclude that there may be three rather than two di– μ –oxo–bridged units present per tetranuclear Mn cluster. In addition, we have obtained data using Ca and Sr X–ray spectroscopy that provide evidence for a heteronuclear Mn1Ca cluster. The possibility of three di– μ –oxo–bridged Mn–Mn moieties and the proximity of Ca is incorporated into developing structural models for the Mn cluster. The involvement of bridging and terminal O ligands of Mn in the mechanism of oxygen evolution is discussed in the context of our X–ray spectroscopy results.

A multi-length-scale USAXS/SAXS facility: 10–50 keV small-angle X-ray scattering instrument

2013 ◽  
Vol 46 (5) ◽  
pp. 1508-1512 ◽  
Author(s):  
Byron Freelon ◽  
Kamlesh Suthar ◽  
Jan Ilavsky
Keyword(s):  
Small Angle ◽  
Soft Matter ◽  
High Energy ◽  
X Rays ◽  
X Ray ◽  
X Ray Scattering ◽  
Wide Range ◽  
And Performance ◽  
New Facility ◽  
Ray Scattering

Coupling small-angle X-ray scattering (SAXS) and ultra-small-angle X-ray scattering (USAXS) provides a powerful system of techniques for determining the structural organization of nanostructured materials that exhibit a wide range of characteristic length scales. A new facility that combines high-energy (HE) SAXS and USAXS has been developed at the Advanced Photon Source (APS). The application of X-rays across a range of energies, from 10 to 50 keV, offers opportunities to probe structural behavior at the nano- and microscale. An X-ray setup that can characterize both soft matter or hard matter and high-Zsamples in the solid or solution forms is described. Recent upgrades to the Sector 15ID beamline allow an extension of the X-ray energy range and improved beam intensity. The function and performance of the dedicated USAXS/HE-SAXS ChemMatCARS-APS facility is described.

Microfluidics of soft matter investigated by small-angle X-ray scattering

2005 ◽  
Vol 12 (6) ◽  
pp. 745-750 ◽  
Author(s):  
Alexander Otten ◽  
Sarah Köster ◽  
Bernd Struth ◽  
Anatoly Snigirev ◽  
Thomas Pfohl
Keyword(s):  
Small Angle ◽  
Soft Matter ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Three-dimensional structure of the calcite–water interface by surface X-ray scattering

2004 ◽  
Vol 573 (2) ◽  
pp. 191-203 ◽  
Author(s):  
P. Geissbühler ◽  
P. Fenter ◽  
E. DiMasi ◽  
G. Srajer ◽  
L.B. Sorensen ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dimensional Structure ◽  
Water Interface ◽  
X Ray ◽  
Three Dimensional Structure ◽  
X Ray Scattering ◽  
Ray Scattering

A NIST facility for Resonant Soft X-ray Scattering measuring nano-scale soft matter structure at NSLS-II

2021 ◽  
Author(s):  
Eliot Gann ◽  
Thomas Crofts ◽  
Glenn Holland ◽  
Peter Beaucage ◽  
Terry McAfee ◽  
...  
Keyword(s):  
Soft Matter ◽  
X Ray ◽  
Nano Scale ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Correction: Comparison of bulk and microfluidic methods to monitor the phase behaviour of nanoparticles during digestion of lipid-based drug formulations using in situ X-ray scattering

Soft Matter ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 276-276
Author(s):  
Linda Hong ◽  
Muhsincan Sesen ◽  
Adrian Hawley ◽  
Adrian Neild ◽  
Patrick T. Spicer ◽  
...  
Keyword(s):  
Soft Matter ◽  
Phase Behaviour ◽  
Drug Formulations ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Correction for ‘Comparison of bulk and microfluidic methods to monitor the phase behaviour of nanoparticles during digestion of lipid-based drug formulations using in situ X-ray scattering’ by Ben J. Boyd et al., Soft Matter, 2019, 15, 9565–9578.

scholarly journals An Optimized Table-Top Small-Angle X-ray Scattering Set-up for the Nanoscale Structural Analysis of Soft Matter

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
T. Sibillano ◽  
L. De Caro ◽  
D. Altamura ◽  
D. Siliqi ◽  
M. Ramella ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Small Angle ◽  
Soft Matter ◽  
X Ray ◽  
X Ray Scattering ◽  
Set Up ◽  
Ray Scattering
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