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Direct measurement of surface forces between sapphire crystals in aqueous solutions

Horn, R. G., Clarke, D. R. and Clarkson, M. T. 1988, Direct measurement of surface forces between sapphire crystals in aqueous solutions, Journal of materials research, vol. 3, no. 3, pp. 413-416, doi: 10.1557/JMR.1988.0413.

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Title Direct measurement of surface forces between sapphire crystals in aqueous solutions
Author(s) Horn, R. G.
Clarke, D. R.
Clarkson, M. T.
Journal name Journal of materials research
Volume number 3
Issue number 3
Start page 413
End page 416
Total pages 4
Publisher Materials Research Society
Place of publication Pittsburgh, Pa.
Publication date 1988-06-01
ISSN 0884-2914
2044-5326
Keyword(s) sapphire crystals
surface forces
aqueous solutions
direct measurement
Summary Measurements are presented of the electrical double layer and van der Waals forces between the (0001) surfaces of two single-crystal sapphire platelets immersed in an aqueous solution of NaCl at pH values from 6.7 to 11. The results fit the standard Deryaguin-Landau-Verwey-Overbeek (DLVO) theory, with a Hamaker constant of 6.7 × 10−20 J. These are the first measurements made using the Israelachvili surface forces apparatus without mica as a substrate material, and they demonstrate the possibility of using this technique to explore the surface chemistry of a wider range of materials.
Language eng
DOI 10.1557/JMR.1988.0413
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1988, Materials Research Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30041456

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