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Crystals of Na+ ions at the surface of a silica hydrosol | | Aleksey M. Tikhonov
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6 Jan 2007 | | Subject: | Soft Condensed Matter; Mesoscopic Systems and Quantum Hall Effect | | Abstract: | I used x-ray grazing incidence diffraction to measure the spatial correlations between sodium ions adsorbed with Bjerrum’s density at the surface of a monodispersed 22-nm-particle colloidal silica solution stabilized by NaOH with a total bulk concentration mol/L. My findings show that the surface compact layer is in a two-dimensional crystalline state (symmetry p2), with four ions forming the unit cell and a ~30 Angstrom translational correlation length between sodium ions. | | Source: | arXiv, cond-mat/0701122 | | Services: | Forum | Review | PDF | Favorites | |
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