Apparatus for measuring the contact angles at crystal−solution−vapor interfaces
Abstract
This paper describes an apparatus for measuring the contact angle between an air bubble and the underside of a solid surface to which the bubble adheres. This general method of measurement of contact angles replaces the usual sessile drop method. The purpose of submerging a bubble in the liquid is to assure an equilibrium vapor pressure, so that, in case of solutions, the surface concentration does not change during measurement. The apparatus was especially designed to study the interfacial energies between saturated solutions and the various faces of a chosen crystal.
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Aqueous H2SO4 droplets on alumina single crystals have contact angles of around 30°.
“Figure S3 in Supporting Information S1 shows that aqueous H 2 SO4 droplets on alumina single crystals have contact angles of around 30° (Corti & Krieger, 2007; McLachlan & Cox, 1975; Thomason & Peter, 2006).”
From Chemical Impact of Stratospheric Alumina Particle Injection for Solar Radiation Modification and Related Uncertainties (2023) · cites this paper as McLachlan & Cox, 1975
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Vattioni, S., Luo, B., Feinberg, A., Stenke, A., Vockenhuber, C., Weber, R., Dykema, J. A., Krieger, U. K., Ammann, M., Keutsch, F., et al. (2023) · Geophysical Research Letters · doi:10.1029/2023gl105889 · Cited by 26 · see citing works
“Figure S3 in Supporting Information S1 shows that aqueous H 2 SO 4 droplets on alumina single crystals have contact angles of around 30° (Corti & Krieger, 2007; McLachlan & Cox, 1975; Thomason & Peter, 2006).”
Background
- Authors
- McLachlan, D., & Cox, H. M.
- Affiliations
- The Ohio State University (US)
- Venue
- Review of Scientific Instruments
- Publisher
- AIP Publishing
- Published
- 1975-01-01
- Volume
- 46
- Issue
- 1
- Pages
- 80-83
- ISSN
- 0034-6748 (ISSN-L)
- 1089-7623
- OpenAlex
- W2066540008
- Cited by
- 7
- References
- 0
- Citations by year
- 2023: 2 · 2014: 1 · 2012: 2
- FWCI
- 1.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Review of Scientific Instruments (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Minerals Flotation and Separation Techniques
- Physical Sciences › Materials Science › Materials Chemistry › Crystallization and Solubility Studies
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
- Keywords
- contact angle measurement, air bubbles, equilibrium vapor pressure, interfacial energy, saturated solutions, crystal facets, surface concentration
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