Aligning pitch for measurements of the shape of captive bubbles

Hamed Khoojinian; Jim P. Goodarzi; Stephen B. Hall

doi:10.1016/j.colsurfa.2012.01.029

Aligning pitch for measurements of the shape of captive bubbles

Hamed Khoojinian, Jim P. Goodarzi, Stephen B. Hall

Pulmonary and Critical Care Medicine

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The first step required for the determination of surface tension from the shape of a captive bubble is the correct alignment of both the solid support against which the bubble floats and the camera used to record its profile. The solid support should be perpendicular to the gravitationally vertical axis. The camera used to visualize the bubble must be aligned to its axis of symmetry. Alignment of roll for both the camera and solid support is straightforward. For well-collimated light, yaw is unimportant. We show here how to align pitch, first adjusting the camera relative to the gravitational vertical, and then adjusting an agarose dome used as a ceiling above captive bubbles within the visual frame of reference. andcopy; 2012 Elsevier B.V.

Original language	English (US)
Pages (from-to)	59-62
Number of pages	4
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	397
DOIs	https://doi.org/10.1016/j.colsurfa.2012.01.029
State	Published - Mar 5 2012

Keywords

Axisymmetric fluid-fluid interface
Capillarity
Drop-shape analysis
Profile analysis
Surface tension
Tensiometry

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfa.2012.01.029

Cite this

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title = "Aligning pitch for measurements of the shape of captive bubbles",

abstract = "The first step required for the determination of surface tension from the shape of a captive bubble is the correct alignment of both the solid support against which the bubble floats and the camera used to record its profile. The solid support should be perpendicular to the gravitationally vertical axis. The camera used to visualize the bubble must be aligned to its axis of symmetry. Alignment of roll for both the camera and solid support is straightforward. For well-collimated light, yaw is unimportant. We show here how to align pitch, first adjusting the camera relative to the gravitational vertical, and then adjusting an agarose dome used as a ceiling above captive bubbles within the visual frame of reference. andcopy; 2012 Elsevier B.V.",

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note = "Funding Information: These studies were supported by the National Institutes of Health (HL54209 and HL60914). ",

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AU - Khoojinian, Hamed

AU - Goodarzi, Jim P.

AU - Hall, Stephen B.

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KW - Axisymmetric fluid-fluid interface

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KW - Profile analysis

KW - Surface tension

KW - Tensiometry

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Aligning pitch for measurements of the shape of captive bubbles

Abstract

Keywords

ASJC Scopus subject areas

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