Ellipsometric study of the surface of simple liquids

Beaglehole, D.

doi:10.1016/0378-4363(80)90003-0

Cited by 150 publications

(104 citation statements)

References 23 publications

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“…At a real interface, the refractive index changes smoothly at the interface, not discontinuously, with the result (15). The polarization of the light from a He-Ne laser was modulated photoelastically at 50 kHz by a quartz plate and that r p goes through a minimum but does not vanish.…”

Section: Methodsmentioning

confidence: 88%

Measurement of Dynamic Interfacial Properties in an Overflowing Cylinder by Ellipsometry

Manning-Benson¹,

Bain²,

Darton

1997

Journal of Colloid and Interface Science

106

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Section: Methodsmentioning

confidence: 88%

Measurement of Dynamic Interfacial Properties in an Overflowing Cylinder by Ellipsometry

Manning-Benson¹,

Bain²,

Darton

1997

Journal of Colloid and Interface Science

106

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“…24,25 Fitting was carried out using the measured values for the imaginary component of F, since these were found to give more consistent results in the presence of the solution cell than the real component. Values of film thickness and refractive index were determined by fitting the ellipsometric data to a simple model of a single layer of nonabsorbing, isotropic material as described by Azzam and Bashara, 24 using a Levenberg-Marquardt nonlinear least-squares fitting routine, with reported parameter uncertainties corresponding to the 95% confidence intervals of the fits.…”

Section: Methodsmentioning

confidence: 99%

Template Cross-Linking Effects on Morphologies of Swellable Block Copolymer and Mesostructured Silica Thin Films

2005

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Mesostructured silica films were formed from cross-linked poly(d8-styrene-block-2-vinylpyridine) (dPS-b-P2VP) diblock copolymer template films by swelling with silica precursor solutions. The mesoscopic and macroscopic morphologies of the resulting materials depended strongly on the extent of P2VP cross-linking. Without cross-linking, extensive rearrangement of the initial 2D hexagonal arrangement of dPS cylinders took place during swelling, leading to wormlike mesostructures. At low extents of template cross-linking, osmotic stresses led to a surface-wrinkling instability with a morphology directed by the anisotropic mechanical properties of the swelled block copolymer mesostructure. At higher degrees of P2VP cross-linking, wrinkling was suppressed, and the composite silica/polymer mesostructures corresponded to essentially affine expansions of the initial template structures normal to the film plane. At low extents of P2VP cross-linking, the mesostructures of the hybrid block copolymer/silica films were preserved during oxidation and removal of the block copolymer template species, leading to stable mesoporous silica films. At high extents of P2VP cross-linking, however, insufficient amounts of silica were incorporated to form stable porous inorganic materials, leading to mesostructural collapse. An intermediate level of cross-linking allowed the preparation of stable mesoporous silica films with structures that closely resembled those of the initial template films.

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“…(5) (dashed lines) and experimental ellipticity dataρ (open symbols) in the one-phase region for four mixtures is shown in Fig. 2a where the ellipticityρ = Im(r p /r s )| θ B at the Brewster angle θ B with r i the complex reflection amplitude for polarization i [22,23]. [15], aniline + cyclohexane (AC), isobutyric acid + water (IW), and 2,6-lutidine + water (LW) [16] which is well described by the P function (dashed lines) where the surface field |h 1 | 0.…”

Section: Strong Adsorptionmentioning

confidence: 99%

Surface Adsorption and Orientation Near the Critical Point of Binary Liquid Mixtures

Cho

Law

Carpenter

2004

International Journal of Thermophysics

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Critical binary liquid mixtures have proven to be extremely useful for quantitatively studying wetting and adsorption phenomena that occur at the surfaces of these systems. In this paper recent experimental developments in our understanding of adsorption gained via the study of critical mixtures are reviewed. At the noncritical liquid/vapor surface the component possessing the smallest surface tension completely saturates this surface for sufficiently large surface tension differences σ between the two components. This complete (or strong) adsorption is described by a universal scaling function P which depends upon the dimensionless depth z/ξ where ξ is the correlation length. Weakly polar and nonpolar binary liquid mixtures have been used to define the scaling function P. If the surface energy difference σ between the two components is small, then the surface is no longer completely saturated by one component. In this weak adsorption regime the adsorption behavior is now described by a universal function G of both z/ξ and σ . The functional dependence of G is elucidated by examining a homologous series of critical binary AB liquid mixtures where component A is an n-alkane while component B (methyl formate) is fixed. For this system σ changes sign with increasing n-alkane chain length. In addition to adsorption, dipole surface orientational order at the liquid/vapor surface of highly polar + nonpolar mixtures is also discussed. This orientational order is induced by the dipoleimage dipole interaction in the vicinity of a surface.

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Ellipsometric study of the surface of simple liquids

Cited by 150 publications

References 23 publications

Measurement of Dynamic Interfacial Properties in an Overflowing Cylinder by Ellipsometry

Measurement of Dynamic Interfacial Properties in an Overflowing Cylinder by Ellipsometry

Template Cross-Linking Effects on Morphologies of Swellable Block Copolymer and Mesostructured Silica Thin Films

Surface Adsorption and Orientation Near the Critical Point of Binary Liquid Mixtures

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