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Journal of Biomedical Optics

Single-beam, dual-view digital holographic interferometry for biomechanical strain measurements of biological objects
Author(s): Dejan V. Pantelić; Dušan Ž. Grujić; Darko M. Vasiljević
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Paper Abstract

We describe a method for dual-view biomechanical strain measurements of highly asymmetrical biological objects, like teeth or bones. By using a spherical mirror, we were able to simultaneously record a digital hologram of the object itself and the mirror image of its (otherwise invisible) rear side. A single laser beam was sufficient to illuminate both sides of the object, and to provide a reference beam. As a result, the system was mechanically very stable, enabling long exposure times (up to 2 min) without the need for vibration isolation. The setup is simple to construct and adjust, and can be used to interferometrically observe any object that is smaller than the mirror diameter. Parallel data processing on a CUDA-enabled (compute unified device architecture) graphics card was used to reconstruct digital holograms and to further correct image distortion. We used the setup to measure the deformation of a tooth due to mastication forces. The finite-element method was used to compare experimental results and theoretical predictions.

Paper Details

Date Published: 17 December 2014
PDF: 10 pages
J. Biomed. Opt. 19(12) 127005 doi: 10.1117/1.JBO.19.12.127005
Published in: Journal of Biomedical Optics Volume 19, Issue 12
Show Author Affiliations
Dejan V. Pantelić, Univ. of Belgrade (Serbia)
Dušan Ž. Grujić, Univ. of Belgrade (Serbia)
Darko M. Vasiljević, Univ. of Belgrade (Serbia)


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