Faculté des sciences

Surface-specific ordering of reverse micelles in confinement

Nygård, Kim ; Satapathy, Dillip K. ; Perret, Edith ; Padeste, Celestino ; Bunk, Oliver ; David, Christian ; Veen, J. Friso van der

In: Soft Matter, 2010, vol. 6, no. 18, p. 4536-4539

We have applied holographic X-ray diffraction from fluid-filled channel arrays for model-independent density reconstruction of spherical AOT/water/isooctane reverse micelles (average diameter σ***Missing image substitution***12–13 nm) confined between planar surfaces. We find the confinement-induced ordering of the reverse micelles to strongly depend on the surface potential of the... Plus

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    Summary
    We have applied holographic X-ray diffraction from fluid-filled channel arrays for model-independent density reconstruction of spherical AOT/water/isooctane reverse micelles (average diameter σ***Missing image substitution***12–13 nm) confined between planar surfaces. We find the confinement-induced ordering of the reverse micelles to strongly depend on the surface potential of the confining surfaces: for hydrophilic surfaces we find diffuse monolayers centered at 13 ± 3 nm away from the solid–fluid interface, while for hydrophobic surfaces we observe close-packed monolayers at the solid–fluid interface.