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We outline a strategy for quantitatively evaluating the conformational characteristics of self-assembled structures using the techniques of contrast variation small angle neutron scattering. By means of basis function expansion, a case…

软凝聚态物质 · 物理学 2021-10-27 Albert Y. Ho , Guan-Rong Huang , Wei-Ren Chen

On the basis of the separated form-factor model, a code for fitting the small-angle neutron scattering spectra of the polydispersed vesicle population has been developed. Vesicle and membrane bilayer parameters are analyzed for various…

化学物理 · 物理学 2007-05-23 E. V. Zemlyanaya , M. A. Kiselev , V. K. Aswal

Hypothesis Understanding the scission of rod-like micelles under mechanical forces is crucial for optimizing their stability and behavior in industrial applications. This study investigates how micelle length, flexibility, and external…

软凝聚态物质 · 物理学 2025-01-24 Guan-Rong Huang , Ryan P. Murphy , Lionel Porcar , Chi-Huan Tung , Changwoo Do , Wei-Ren Chen

Contrast variation small-angle neutron scattering (CV-SANS) is a powerful tool to evaluate the structure of multi-component systems by decomposing scattering intensities $I$ measured with different scattering contrasts into partial…

软凝聚态物质 · 物理学 2025-03-25 Koichi Mayumi , Tatsuro Oda , Shinya Miyajima , Ippei Obayashi , Kazuaki Tanaka

Small angle neutron scattering (SANS) on the unilamellar vesicle populations (diameter 500 and 1000 angstrom) was used to characterize lipid vesicles from dimyristoylphosphatidylcholine (DMPC) at three phases (gel, ripple, and liquid).…

生物物理 · 物理学 2007-05-23 M. A. Kiselev , E. V. Zemlyanaya , V. K. Aswal , R. H. H. Neubert

Small-angle scattering (SAS) intensities observed experimentally are often characterized by the presence of successive power-law regimes with various scattering exponents whose values vary from -4 to -1. This usually indicates multiple…

统计力学 · 物理学 2014-01-31 A. Yu. Cherny , E. M. Anitas , V. A. Osipov , A. I. Kuklin

Small-Angle Scattering (SAS) investigates structures in samples that generally range from approximately 0.5 nm to a few 100 nm. This can both be done for isotropic samples such as blends and liquids, as well as anisotropic samples such as…

仪器与探测器 · 物理学 2023-09-22 Sebastian Jaksch

In applications involving organic vapour, the performance of high surface area carbons is often challenged by water vapour in the atmosphere. Small angle neutron scattering (SANS), through its ability to distinguish between different…

化学物理 · 物理学 2015-03-18 Krisztina László , Bruno Demé , Orsolya Czakkel , Erik Geissler

The vortex matter in bulk type-II superconductors serves as a prototype system for studying the random pinning problem in condensed matter physics. Since the vortex lattice is embedded in an atomic lattice, small angle neutron scattering…

Magnetic small-angle neutron scattering (SANS) is ideally suited to provide direct, reciprocal-space information of long-wavelength magnetic modulations, such as helicoids, solitons, merons, or skyrmions. SANS of such structures in thin…

强关联电子 · 物理学 2022-11-14 Grace L. Causer , Alfonso Chacon , André Heinemann , Christian Pfleiderer

Magnetic small-angle neutron scattering (SANS) is a powerful tool for investigating nonuniform magnetization structures inside magnetic materials. Here, considering a ferromagnetic medium with weakly inhomogeneous uniaxial magnetic…

材料科学 · 物理学 2015-03-05 Konstantin L. Metlov , Andreas Michels

In the quest to image the three-dimensional magnetization structure we show that the technique of magnetic small-angle neutron scattering (SANS) is highly sensitive to the details of the internal spin structure of nanoparticles. By…

介观与纳米尺度物理 · 物理学 2020-09-15 Laura G. Vivas , Rocio Yanes , Dmitry Berkov , Sergey Erokhin , Mathias Bersweiler , Dirk Honecker , Philipp Bender , Andreas Michels

The sol-gel silica glasses doped with copper selenide nanoparticles were studied through small-angle neutron scattering (SANS) and transmission electron microscopy. SANS intensities demonstrate the complicated dependence on the scattering…

介观与纳米尺度物理 · 物理学 2021-12-03 V. S. Gurin , A. V. Rutkauskas , Yu. E. Gorshkova , S. E. Kichanov , A. A. Alexeenko , D. P. Kozlenko

Many low-density nanoparticles show a radial inner structure. This work proposes a novel approach to contrast variation with SAXS based on the constitution of a solvent density gradient in a glass capillary in order to resolve this internal…

软凝聚态物质 · 物理学 2014-10-28 Raul Garcia-Diez , Christian Gollwitzer , Michael Krumrey

The results obtained using my computing program are consistent with the values obtained twenty years ago. It also makes me believe that how to obtain particle size information using the Light Scattering technique needs to be reconsidered.…

化学物理 · 物理学 2024-06-21 Yong Sun

Small angle neutron scattering (SANS) is used to measure the density of heavy water contained in 1-D cylindrical pores of mesoporous silica material MCM-41-S-15, with pores of diameter of 15+-1 A. In these pores the homogenous nucleation…

软凝聚态物质 · 物理学 2009-11-13 Dazhi Liu , Yang Zhang , Chia-Cheng Chen , Chung-Yuan Mou , Peter H Poole , Sow-Hsin Chen

Surfactants have been widely studied and used in controlling droplet evaporation. In this work, we observe and study the crystallization of sodium dodecyl sulfate (SDS) within an evaporating glycerol-water mixture droplet. The…

流体动力学 · 物理学 2020-07-28 Yaxing Li , Valentin Salvator , Herman Wijshoff , Michel Versluis , Detlef Lohse

We studied the interaction between salts and surfactants on the water surface using heterodyne-detected vibrational sum frequency generation (HD-VSFG) spectroscopy. We used sodium dodecyl sulfate (SDS) as a prototype surfactant system at 75…

软凝聚态物质 · 物理学 2025-08-15 Sanghamitra Sengupta , Jan Versluis , Huib J. Bakker

Ultrasound irradiation is a commonly used technique for non-destructive diagnostics or targeted destruction. We report on a new versatile sonication device that fits in a variety of standard sample environments for neutron and X-ray…

软凝聚态物质 · 物理学 2018-01-26 Sudipta Gupta , Markus Bleuel , Gerald J. Schneider

We use coarse-grained molecular-dynamics (MD) simulations to investigate the structural and dynamical properties of micelles under non-equilibrium Poiseuille flow in a nano-confined geometry. The effects of flow, confinement, and the…

软凝聚态物质 · 物理学 2015-06-23 Mona Habibi , Colin Denniston , Mikko Karttunen
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