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22 May 2013 Interferometric study on birds’ feathers
Manuel H. De la Torre-Ibarra, Fernando Mendoza Mendoza Santoyo
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Journal of Biomedical Optics, Vol. 18, Issue 5, 056011 (May 2013). https://doi.org/10.1117/1.JBO.18.5.056011
Abstract
Optical techniques such as speckle pattern interferometry are well known in the nondestructive testing measurement community. They can be used, for instance, as a predictor of the mechanical behavior of a sample under study. However, in almost all circumstances, a mathematical model has to be applied in order to make sense of these measurements. This is a critical issue when an organic sample is studied, mainly due to its complex deformation response. A good example of this is observed in the birds’ feathers. They have extraordinary mechanical and aerodynamic properties thanks to their stiffness and lightness. A couple of live birds are safely situated in front of an out-of-plane sensitive digital holographic interferometer (DHI), an optical system capable of recovering the optical phase in this type of nonrepeatable or unpredictable experiment. In order to recover the backscattering signal and its interferometric response, several images are recorded from different sections of the plumage. Displacement maps are obtained from what is, as far as is known, the first time that full field microdisplacement maps are presented over a hummingbird and a parakeet plumage.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Manuel H. De la Torre-Ibarra and Fernando Mendoza Mendoza Santoyo "Interferometric study on birds’ feathers," Journal of Biomedical Optics 18(5), 056011 (22 May 2013). https://doi.org/10.1117/1.JBO.18.5.056011
Published: 22 May 2013
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Cited by 5 scholarly publications.
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KEYWORDS
Interferometry
Fringe analysis
Backscatter
Beam splitters
Interferometers
Digital holography
Aerodynamics
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