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Picture of the month - December 2017

Published on December 1, 2017
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Christmas' crystals

Cristaux de Noël

Cristaux de Noël

Birefringence of sapphire allows to reveal the crystal misorientations under polarized light. This image is from a sapphire disc obtained by Verneuil's growth.






About the author: Jessica Muzy is a first year PhD student in GPM2 group. Her work, in partnership with  RSA Le Rubis SA (Jarrie, France), consists in studying the relation between sapphire growth parameters, crystalline quality and mechanical properties.
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Written by Muriel Braccini

Date of update January 10, 2018

Communauté Université Grenoble Alpes