2024年6月1日 · Since observation of the real image of nano-scale voids is difficult, small-angle x-ray scattering (SAXS) measurements are mainly used. Thünemann and Ruland proposed a method to analyze characteristics of voids such as cross-sectional area, diameter, and length [17].

2016年2月10日 · In situ SAXS/WAXS investigations provide new insights into the structural evolution upon stretching with spread emphasis to the role of crystalline relaxation. The latter appears as a key element governing plasticity in PVDF and the proposed deformation scheme clarifies some apparent contradictions in literature.

2020年12月16日 · Here, copper foils are rapidly strained via picosecond laser ablation and probed in situ with femtosecond x-ray free electron (XFEL) pulses. Small-angle x-ray scattering (SAXS) monitors the void distribution evolution, while wide-angle scattering (WAXS) simultaneously determines the strain evolution.

2023年9月1日 · The small-angle X-ray and neutron scattering (SAXS and SANS) are versatile techniques used to investigate the structure of explosives, including void size, morphology, and intergranular and intragranular porosity, as well as the three-phase interfacial surface areas among explosive particles, binders, and voids. 5, 6, 7, 8 Ultra-small-angle ...

SAXS measurements of strained ultra-high-strength polyethylene fibres show that noor very little void formation is nvolved inthe fracture mechanism. Mostprobably this due to the (partly) fibrillar structure.

2019年7月29日 · SAXS/SAXS data and thus determine the void parameters of PAN fibers. The results showed that voids affected the mechanical performance of PA fibers and were present throughout the entire wet-spinning process. When the abso-lute quantity and size of voids

2019年9月16日 · The void structure of polyacrylonitrile (PAN) fibers was investigated using ultra-small angle X-ray scat-tering (USAXS) and small angle X-ray scattering (SAXS). A quantitative method was developed to analyze connected USAXS/SAXS data and thus determine the void parameters of PAN fibers.

Equatorial small-angle X-ray scattering (SAXS) experiments show that the former structure is very porous due to the presence of lamellar overgrowth preventing a close package of the backbone fibrils, whereas the latter structure is relatively dense.

2018年4月24日 · The relationship between the scattering intensity in SAXS and the three-dimensional structure of nanoscale inhomogeneities or voids is addressed by generating ultra-large high-quality a -Si networks with 0.1-0.3% volume concentration of voids, as observed in experiments using SAXS and positron annihilation spectroscopy.

2018年5月2日 · The relationship between the scattering intensity in SAXS and the three-dimensional structure of nanoscale inhomogeneities or voids is addressed by generating large high-quality $a$-Si networks with 0.1%--0.3% volume concentration of voids, as observed in experiments using SAXS and positron annihilation spectroscopy.