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Updated: May 9, 2026

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
Published on: June 24, 2016
Imaging interferometry to measure surface rotation field
Thomas Travaillot1, Søren Dohn, Anja Boisen
1FEMTO-ST Institute, CNRS-UMR 6174/UFC/ENSMM/UTBM, Besançon, France. thomas.travaillot@femto-st.fr
Abstract:
This paper describes a polarized-light imaging interferometer to measure the rotation field of reflecting surfaces. This setup is based on a homemade prism featuring a birefringence gradient. The arrangement is presented before focusing on the homemade prism and its manufacturing process. The dependence of the measured optical phase on the rotation of the surface is derived, thus highlighting the key parameters driving the sensitivity. The system's capabilities are illustrated by imaging the rotation field at the surface of a tip-loaded polymer specimen.
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