A simple optical device for measuring free surface deformations of nontransparent liquids

Megalios, EG; Kapsalis, N; Paschalidis, J; Papathanasiou, AG; Boudouvis, AG

dc.contributor.author	Megalios, EG	en
dc.contributor.author	Kapsalis, N	en
dc.contributor.author	Paschalidis, J	en
dc.contributor.author	Papathanasiou, AG	en
dc.contributor.author	Boudouvis, AG	en
dc.date.accessioned	2014-03-01T01:21:46Z
dc.date.available	2014-03-01T01:21:46Z
dc.date.issued	2005	en
dc.identifier.issn	0021-9797	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16360
dc.subject	Ferrofluid	en
dc.subject	Free surface	en
dc.subject	Laser beam	en
dc.subject	Nontransparent liquid	en
dc.subject	Optical device	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	Deformation	en
dc.subject.other	Focusing	en
dc.subject.other	Lenses	en
dc.subject.other	Light reflection	en
dc.subject.other	Liquids	en
dc.subject.other	Surface properties	en
dc.subject.other	Ferrofluid pools	en
dc.subject.other	Focal length	en
dc.subject.other	Free surface deformations	en
dc.subject.other	Nontransparent liquids	en
dc.subject.other	Optical systems	en
dc.subject.other	accuracy	en
dc.subject.other	article	en
dc.subject.other	device	en
dc.subject.other	laser	en
dc.subject.other	liquid	en
dc.subject.other	measurement	en
dc.subject.other	optics	en
dc.subject.other	priority journal	en
dc.subject.other	reproducibility	en
dc.title	A simple optical device for measuring free surface deformations of nontransparent liquids	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jcis.2005.03.033	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jcis.2005.03.033	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	In this paper, a novel optical device for measuring the deformation of liquid free surface, is presented. The device employs a laser beam, which can be focused on any chosen location on the free surface, The key measurement is of the intensity of the beam reflected from a location on the free surface where the deformation exhibits a local extremum, The optics of the device is so designed its to measure a maximum intensity when the distance between the focusing lens and the selected point on the free surface is equal to the focal length, thus enabling a height measurement. The device is tested in ferrofluid pools where the height of the spikes of the normal field instability is measured. The simplicity of the suggested technique enables the fabrication of a quite cheap device for measuring surface deformation of nontransparent liquids, which provides good accuracy and reproducibility. (c) 2005 Elsevier Inc. All rights reserved.	en
heal.publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE	en
heal.journalName	Journal of Colloid and Interface Science	en
dc.identifier.doi	10.1016/j.jcis.2005.03.033	en
dc.identifier.isi	ISI:000230037000025	en
dc.identifier.volume	288	en
dc.identifier.issue	2	en
dc.identifier.spage	508	en
dc.identifier.epage	512	en