Anomalous small-angle X-ray scattering (ASAXS) study of irradiation-induced nanostructure change in Fe-ion beam irradiated oxide dispersion-strengthened (ODS) steel

2020 ◽  
Vol 528 ◽  
pp. 151890
Author(s):  
Takayuki Kumada ◽  
Yojiro Oba ◽  
Ryuhei Motokawa ◽  
Satoshi Morooka ◽  
Aki Tominaga ◽  
...  
Keyword(s):  
Small Angle ◽  
Ion Beam ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
X Ray ◽  
Ods Steel ◽  
X Ray Scattering ◽  
Ray Scattering

Voids Investigation of Amorphous Carbon Films Deposited by DC-Magnetron Sputtering: A Small Angle x-ray Scattering and Gas Thermal Effusion Study

1999 ◽  
Vol 593 ◽  
Author(s):  
F.L. Freire ◽  
L.G. Jacobsohn ◽  
D.F. Franceschini ◽  
S.S. Camargo
Keyword(s):  
Magnetron Sputtering ◽  
Amorphous Carbon ◽  
Small Angle ◽  
Ion Beam ◽  
Carbon Films ◽  
Dc Magnetron Sputtering ◽  
Amorphous Carbon Films ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

ABSTRACTAmorphous carbon films were deposited onto (100) Si crystals and onto ultra-pure Al foils by dc-magnetron sputtering with different Ar plasma pressures, from 0.17 to 1.4 Pa. We investigate the voids structure and the voids density in these films by means of small angle x-ray scattering (SAXS) and mass spectrometry of effused gases. The analysis of the effusion spectra provided clear evidence that films deposited at lower pressures are compact, while the films deposited at higher pressure present a more open structural arrangement, confirming density results obtained by using ion beam techniques. SAXS results reveal that the fraction of open volumes increases with the plasma pressure: a direct correlation between film density and open volume fraction is found. These different film microstructures could be explained by the existence of different bombarding regimes during film growth

Grazing incidence small-angle x-ray scattering applied to the characterization of nanocomposite thin films

2001 ◽  
Vol 678 ◽  
Author(s):  
David Babonneau ◽  
Amelia Suárez-García ◽  
José Gonzalo ◽  
Ivan R. Videnovic ◽  
Michael G. Garnier ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Angle ◽  
Metallic Nanoparticles ◽  
Ion Beam ◽  
Grazing Incidence ◽  
Ion Beam Sputtering ◽  
X Ray ◽  
X Ray Scattering ◽  
Nanocomposite Thin Films ◽  
Ray Scattering

AbstractGrazing incidence small-angle x-ray scattering (GISAXS) allows to investigate precisely the microstructure of nanocomposite thin films containing metal nanocrystals produced using different synthesis techniques. We present results on the size, size distribution, shape, and correlation length of metallic nanoparticles embedded in different matrices fabricated by sequential pulsed laser deposition, magnetron sputtering, and ion-beam sputtering co-deposition. The morphology of the nanoparticles is discussed in terms of the different growth process that takes place in each case.

Ion beam synthesis of buried Zn-VI quantum dots in SiO2– grazing incidence small-angle X-ray scattering studies

2003 ◽  
Vol 36 (3) ◽  
pp. 439-442 ◽  
Author(s):  
I.D. Desnica-Frankovic ◽  
U.V. Desnica ◽  
P. Dubček ◽  
M. Buljan ◽  
S. Bernstorff ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Small Angle ◽  
Ion Beam ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Ion Beam Synthesis ◽  
Ray Scattering

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

Small angle X-ray scattering study of porosity variation in a styrene-divinylbenzene copolymer

1981 ◽  
Vol 46 (7) ◽  
pp. 1675-1681 ◽  
Author(s):  
Josef Baldrian ◽  
Božena N. Kolarz ◽  
Henrik Galina
Keyword(s):  
Small Angle ◽  
Structural Parameters ◽  
Two Phase ◽  
X Ray ◽  
Porosity Variation ◽  
Swelling Agent ◽  
X Ray Scattering ◽  
Styrene Divinylbenzene ◽  
Ray Scattering

Porosity variations induced by swelling agent exchange were studied in a styrene-divinylbenzene copolymer. Standard methods were used in the characterization of copolymer porosity in the dry state and the results were compared with related structural parameters derived from small angle X-ray scattering (SAXS) measurements as developed for the characterization of two-phase systems. The SAXS method was also used for porosity determination in swollen samples. The differences in the porosity of dry samples were found to be an effect of the drying process, while in the swollen state the sample swells and deswells isotropically.

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