Spontaneous formation of an "antidrop"

Galvin, Kevin P., Pratten, Stephen J., Evans, Geoffrey M. and Biggs, Simon (2006) Spontaneous formation of an "antidrop". Langmuir, 22 2: 522-523. doi:10.1021/la052274b


Author Galvin, Kevin P.
Pratten, Stephen J.
Evans, Geoffrey M.
Biggs, Simon
Title Spontaneous formation of an "antidrop"
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
1520-5827
Publication date 2006-01-17
Year available 2006
Sub-type Article (original research)
DOI 10.1021/la052274b
Open Access Status
Volume 22
Issue 2
Start page 522
End page 523
Total pages 2
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Abstract We have observed, with great surprise, the spontaneous formation of a quite unusual drop. Because of its similarity to the antibubble [(a) Hughes, W.; Hughes, A. R. Nature 1932, 129 (3245), 59. (b) Skogen, N. Am. J. Phys. 1956, 24, 239. (c) Strong, C. L. Sci. Am. 1974, 230 (4), 116.], we describe our find as an "antidrop", a thin spherical shell of an aqueous salt solution, surrounded by an inner and outer organic liquid phase. Two of these antidrops, about 8 mm in diameter, are shown in the present paper resting on a bed of smaller conventional drops. Drops of this size do not normally appear so spherical, however the antidrop is a mere shell, and hence its geometry is dominated by the interfacial tension. We found these drops to be remarkably stable, given it was possible to reversibly deform the drops and even slice through a drop with a glass rod to produce two antidrops. Ultimately, after some finite time period, the antidrops simply disintegrated into clouds of tiny droplets of the aqueous salt solution because of the drainage and concomitant rupturing of the liquid comprising their thin spherical shells.
Keyword Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Chemistry
Materials Science
CHEMISTRY, MULTIDISCIPLINARY
CHEMISTRY, PHYSICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Engineering, Architecture and Information Technology Publications
 
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