Waltzing defects @TheLutetiumProject

The Lutetium Project | Waltzing defects @TheLutetiumProject | Uploaded 3 years ago | Updated 3 hours ago
This week on the Lutetium Project: music & microscopy! 🔬 Polarized light reveals the flow and glow of liquid crystals and their intriguing walzting defects...
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/V-RdcIlFwn0
Subscribe to the channel : youtube.com/thelutetiumproject
Follow us on Twitter : twitter.com/TheLuProject
Visit our website: https://www.lutetium.paris/en

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RELATED ARTICLE:

Alexandre Darmon, Michael Benzaquen, David Seč, Simon Čopar, Olivier Dauchot et Teresa Lopez-Leon
Waltzing route toward double-helix formation in cholesteric shells
Proceedings of the National Academy of Sciences, 113, 34, 9469-9474, 2016
pnas.org/content/113/34/9469.short

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CREDITS:

Original footage:
Guillaume Durey, Alexandre Darmon

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Quentin Magdelaine, Mathias Kasiulis

Directed and edited by:
Guillaume Durey, Hoon Kwon

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The Lutetium Project is a PSL students’ initiative conducted as part of IDEX ANR-10-IDEX-0001-02 PSL and funded by:
PSL University – https://www.psl.eu
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – espci.org
Fonds ESPCI Paris – fonds-espci-paris.org

$How to make a miniature river What if we recreated rivers in the lab, to better understand them in real life? 🏞️ This the PhD work of Anaïs Abramian! She takes us on a tour of this model experiment, at the crossroads between physics and geology! ↓ More infos and links in the description! ↓ LINKS: French version: https://www.youtube.com/watch?v=yY76LOO4P0E Subscribe to the channel : https://youtube.com/thelutetiumproject Follow us on Twitter : https://twitter.com/TheLuProject Visit our website: https://www.lutetium.paris/en MORE ABOUT THE INTERVIEWEE: Anaïs Abramian is an alumna of ENS Lyon. She obtained a masters degree in liquid state physics from École Normale Supérieure. She conducted her PhD thesis at Institut de Physique du Globe de Paris, as a member of the team of Geological Fluid Dynamics. She defended in 2018; her thesis was titled Self-organisation of sediment transport in alluvial rivers. She then joined Institut Jean le Rond dAlembert as a postdoctoral researcher in 2019. Her research now focuses on cohesive granular materials. RELATED ARTICLE: Anaïs Abramian, Olivier Devauchelle , Grégoire Seizilles & Eric Lajeunesse, Boltzmann Distribution of Sediment Transport, Physical Review Letters, 123, 014501 (2019) https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.014501 Anaïs Abramian, Olivier Devauchelle & Eric Lajeunesse, Streamwise streaks induced by bedload diffusion, Journal of Fluid Mechanics, 863, 601 (2019) https://doi.org/10.1017/jfm.2018.1024 VIDEO BREAKDOWN: 00:00 Different sizes, same flows 02:47 Making a river in the lab 05:02 A model experiment 06:43 Measuring the topography of the river 07:23 Refraction of light 08:28 Sediments shape rivers 10:37 Diffusion and Brownian motion 11:39 Nature and role of the diffusion of grains 13:56 From model experiments to real rivers 15:36 Conclusion CREDITS: Host: Guillaume Durey Researcher: Anaïs Abramian Writers: Guillaume Durey, Mathias Kasiulis Director: Hoon Kwon Animator: Benjamin Alardin Sound editor: Valentin Zorgnotti Editors: Kévin Lamothe, Guillaume Durey Visual identity: Juliette Nier Theme music: Pierre David Produced by: Guillaume Durey, Mathias Kasiulis , Quentin Magdelaine This video was shot on September 23rd, 2017. The Lutetium Project is a PSL students’ initiative conducted as part of IDEX ANR-10-IDEX-0001-02 PSL and funded by: PSL Research University – https://www.univ-psl.fr ESPCI Paris – https://www.espci.fr Espace des sciences Pierre-Gilles de Gennes – https://www.espgg.org ESPCI Alumni – https://espci.alumni.paris $