FlɛX: a computer vision program to evaluate strain in flexible crystals
Benjamin Hsieh,
Lai-Chin Wu,
Arnaud Grosjean
Abstract:The program FlɛX (flexural ɛ for xtals) has been developed for a quick, easy and accurate evaluation of the maximum deformation reached in flexible crystals from a simple optical microscope picture. The program takes advantage of computer vision libraries to find the contours of a bent crystal and fit these to semicircles. It can then calculate the theoretical maximum deformation along its long axis using equations from the Euler–Bernoulli beam theory.
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