17 December 2014 Single-beam, dual-view digital holographic interferometry for biomechanical strain measurements of biological objects
Author Affiliations +
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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Dejan V. Pantelić, Dušan Ž. Grujić, Darko M. Vasiljević, "Single-beam, dual-view digital holographic interferometry for biomechanical strain measurements of biological objects," Journal of Biomedical Optics 19(12), 127005 (17 December 2014). https://doi.org/10.1117/1.JBO.19.12.127005 . Submission:
JOURNAL ARTICLE
10 PAGES


SHARE
Back to Top