A new x-ray diffraction method for structural investigations of solid-liquid interfaces

Huisman, W.J.; Peters, J.F.; Derks, J.; Ficke, H. G.; Abernathy, D. L.; Veen, J. F. van der

doi:10.1063/1.1148380

Cited by 25 publications

(18 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They indicated that at large interactions substantial epitaxial ordering happens and the first or two fluid layers become locked to the wall. Huisman et al [48] investigated structure of solid-liquid interface with a synchrotron X-ray diffraction method. The method can be effective because of deep penetration of x-rays in matter.…”

Section: Solid-liquid Interfacial Layermentioning

confidence: 99%

A new model for density of nanofluids including nanolayer

Sharifpur

Yousefi

Meyer

2016

International Communications in Heat and Mass Transfer

106

View full text Add to dashboard Cite

Nanofluids which are suspension of nanoparticles in conventional heat transfer fluids attracted researchers while they show higher thermal conductivity and specific heat capacity. The important parameters have influence on thermal-fluid properties of nanofluids include the volume fraction of the nanoparticles, temperature, density of fluid base and nanoparticles, nanoparticles size, nanolayer, thermal conductivity of base fluid and particles, and pH. Nanolayer which is an approved interfacial layer between particles and base fluid involved in some of modelling for effective thermal conductivity and effective viscosity of nanofluids. Therefore, this layer must effect on other properties of nanofluids such as density. In this study investigation into the density of nanofluids has done experimentally.The nanofluids were investigated for density measurements consist of SiO2-Water, MgOGlycerol, CuO-Glycerol and SiOx-Ethylene Glycol /Water for range of 1 to 6% volume fraction as well as temperature range of 10 to 40 o C. The results show that mixture model for density of nanofluids (density of nanofluid = density of base fluid multiply by volume fraction of base fluid + density of nanoparticles multiply by volume fraction of nanoparticles) which is generally cited in literature has higher value than experimental data.For higher volume fraction of nanoparticles, the gap between the experimental results and the mixture model gets more. This is due to the nanolayer which also shows nanolayer density can be between void and the base fluid density. Therefore, based on the experimental data a new model for density of nanofluids developed which includes nanolayer. It was also found that the amount of the void in the nanolayer is more sensitive to nanoparticle size and not to base fluids or nanoparticles material.

show abstract

Section: Solid-liquid Interfacial Layermentioning

confidence: 99%

A new model for density of nanofluids including nanolayer

Sharifpur

Yousefi

Meyer

2016

International Communications in Heat and Mass Transfer

106

View full text Add to dashboard Cite

show abstract

“…Because in reflection geometry the beam has to penetrate several millimeters of Al 2 O 3 , high-energy X-rays are essential. 114−116…”

Section: X-ray Surface Forces Apparatusmentioning

confidence: 99%

Structure and Dynamics of Confined Liquids: Challenges and Perspectives for the X-ray Surface Forces Apparatus

et al. 2019

View full text Add to dashboard Cite

The molecular-scale structure and dynamics of confined liquids has increasingly gained relevance for applications in nanotechnology. Thus, a detailed knowledge of the structure of confined liquids on molecular length scales is of great interest for fundamental and applied sciences. To study confined structures under dynamic conditions, we constructed an in situ X-ray surface forces apparatus (X-SFA). This novel device can create a precisely controlled slit-pore confinement down to dimensions on the 10 nm scale by using a cylinder-on-flat geometry for the first time. Complementary structural information can be obtained by simultaneous force measurements and X-ray scattering experiments. The in-plane structure of liquids parallel to the slit pore and density profiles perpendicular to the confining interfaces are studied by X-ray scattering and reflectivity. The normal load between the opposing interfaces can be modulated to study the structural dynamics of confined liquids. The confinement gap distance is tracked simultaneously with nanometer precision by analyzing optical interference fringes of equal chromatic order. Relaxation processes can be studied by driving the system out of equilibrium by shear stress or compression/decompression cycles of the slit pore. The capability of the new device is demonstrated on the liquid crystal 4′-octyl-4-cyano-biphenyl (8CB) in its smectic A (SmA) mesophase. Its molecular-scale structure and orientation confined in 100 nm to 1.7 μm slit pores was studied under static and dynamic nonequilibrium conditions.

show abstract

“…The TCF and other spatial functions can be experimentally measured with x-ray diffraction[31], inelastic scattering of thermal neutrons[32], light scattering[1] and electron diffraction[33] experiments.…”

Section: Integral Equationsmentioning

confidence: 99%

Integral Equations in the Study of Polar and Ionic Interaction Site Fluids

Howard

Pettitt

2011

J Stat Phys

View full text Add to dashboard Cite

In this review article we consider some of the current integral equation approaches and application to model polar liquid mixtures. We consider the use of multidimensional integral equations and in particular progress on the theory and applications of three dimensional integral equations. The IEs we consider may be derived from equilibrium statistical mechanical expressions incorporating a classical Hamiltonian description of the system. We give example including salt solutions, inhomogeneous solutions and systems including proteins and nucleic acids.

show abstract

A new x-ray diffraction method for structural investigations of solid-liquid interfaces

Cited by 25 publications

References 34 publications

A new model for density of nanofluids including nanolayer

A new model for density of nanofluids including nanolayer

Structure and Dynamics of Confined Liquids: Challenges and Perspectives for the X-ray Surface Forces Apparatus

Integral Equations in the Study of Polar and Ionic Interaction Site Fluids

Contact Info

Product

Resources

About