Neutron reflectivity studies of critical adsorption: The correspondence between a critical adsorption profile and specular neutron reflection

Howse, Jonathan R.; Bowers, James; Manzanares-Papayanopoulos, Emilio; McLure, Ian A.; Steitz, Roland

doi:10.1103/physreve.59.5577

Cited by 18 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For all X-ray measurements, the sample was kept under an inert argon atmosphere in a home-built container with a 0.025 mm thick Kapton HN window (DuPont, Hamm, Germany). Details on the home-built X-ray instrument and its operational modes can be found elsewhere …”

Section: Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

In Situ Studies of Solid Electrolyte Interphase (SEI) Formation on Crystalline Carbon Surfaces by Neutron Reflectometry and Atomic Force Microscopy

Steinhauer

Stich

Kurniawan

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The solid electrolyte interphase (SEI) is a complex and fragile passivation layer with crucial importance for the functionality of lithium-ion batteries. Due to its fragility and reactivity, the use of in situ techniques is preferable for the determination of the SEI's true structure and morphology during its formation. In this study, we use in situ neutron reflectometry (NR) and in situ atomic force microscopy (AFM) to investigate the SEI formation on a carbon surface. It was found that a lithium-rich adsorption layer is already present at the open circuit voltage on the carbon sample surface and that the first decomposition products start to deposit close to this potential. During the negative potential sweep, the growth of the SEI can be observed in detail by AFM and NR. This allows precise monitoring of the morphology evolution and the resulting heterogeneities of individual SEI features. NR measurements show a maximum SEI thickness of 192 Å at the lower cutoff potential (0.02 V vs Li/Li), which slightly decreases during the positive potential scan. The scattering length density (SLD) obtained by NR provides additional information on the SEI's chemical nature and structural evolution.

show abstract

Section: Experimental Sectionmentioning

confidence: 99%

“…Details on the home-built X-ray instrument and its operational modes can be found elsewhere. 18 In Situ Neutron Reflectometry. NR measurements were performed at the time-of-flight (TOF) reflectometer BioRef (V18) at the Helmholtz-Zentrum Berlin (HZB).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

In Situ Studies of Solid Electrolyte Interphase (SEI) Formation on Crystalline Carbon Surfaces by Neutron Reflectometry and Atomic Force Microscopy

Steinhauer

Stich

Kurniawan

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…All X-ray reflectivity experiments were performed at ambient humidity at room temperature. Details on the home-built instrument and its operational mode can be found elsewhere …”

Section: Methodsmentioning

confidence: 91%

“…Details on the home-built instrument and its operational mode can be found elsewhere. 30 Analysis of X-ray Reflectivity Data. During the optimization of the sample preparation, the influence of different parameters was investigated.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Preparation of a New Oligolamellar Stratum Corneum Lipid Model

et al. 2016

Self Cite

View full text Add to dashboard Cite

In this study, we present a preparation method for a new stratum corneum (SC) model system, which is closer to natural SC than the commonly used multilayer models. The complex setup of the native SC lipid matrix was mimicked by a ternary lipid mixture of ceramide [AP], cholesterol, and stearic acid. A spin coating procedure was applied to realize oligo-layered samples. The influence of lipid concentration, rotation speed, polyethylenimine, methanol content, cholesterol fraction, and annealing on the molecular arrangement of the new SC model was investigated by X-ray reflectivity measurements. The new oligo-SC model is closer to native SC in the total number of lipid membranes found between corneocytes. The reduction in thickness provides the opportunity to study the effects of drugs and/or hydrophilic penetration enhancers on the structure of SC in full detail by X-ray or neutron reflectivity. In addition, the oligo-lamellar systems allows one to infer not only the lamellar spacing, but also the total thickness of the oligo-SC model and changes thereof can be monitored. This improvement is most helpful for the understanding of transdermal drug administration on the nanoscale. The results are compared to the commonly used multilamellar lipid model systems and advantages and disadvantages of both models are discussed.

show abstract

“…Besides their interest as regards basic science, such phenomena are of importance in many applications fields like those of colloids, metallurgy, chemical synthesis in unusual systems (microdivided systems, supercritical fluids), heterogeneous catalysis and petroleum recovery. So, in addition to precise elegant laws like the critical divergence of adsorption or the critical coexistence curve equation [7][8][9], it is also of great interest to examine the general behaviour of adsorption in relation to wetting in a phase diagram that is as complete as possible. This behaviour also allows one to detect possible phenomena that are more minute than critical behaviours and related divergences like prewetting [10].…”

Section: Introductionmentioning

confidence: 99%

Critical and wetting transitional adsorption behaviour in a liquid system against vapour and other walls

Huruguen¹,

Amara²,

Méar³

et al. 2001

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The adsorption of 2, 5 DMP (2, 5-dimethylpyridine) at the free surface of water (1)-2, 5 DMP (2) liquid mixtures was determined from surface tension and activity measurements. Two divergences were found: the former was observed at Tc for the critical isochore and the 2, 5 DMP-rich γ-phase which, at coexistence, completely wets the surface at Tc, whereas the latter was noticed at Tw for the water-rich β-phase. These results were compared with those found under similar conditions for the same liquid system with silica as the wall; this comparison is quite fruitful because, with silica, the preferentially wetting phase is the β-phase.

show abstract

Neutron reflectivity studies of critical adsorption: The correspondence between a critical adsorption profile and specular neutron reflection

Cited by 18 publications

References 14 publications

In Situ Studies of Solid Electrolyte Interphase (SEI) Formation on Crystalline Carbon Surfaces by Neutron Reflectometry and Atomic Force Microscopy

In Situ Studies of Solid Electrolyte Interphase (SEI) Formation on Crystalline Carbon Surfaces by Neutron Reflectometry and Atomic Force Microscopy

Preparation of a New Oligolamellar Stratum Corneum Lipid Model

Critical and wetting transitional adsorption behaviour in a liquid system against vapour and other walls

Contact Info

Product

Resources

About