The transition to turbulence @TheLutetiumProject

The Lutetium Project Classic, yet beautiful fluid dynamics! This is the third entry in our series "Experiments in music"... and it's going to be the last for some time: next video on Dec 6th from our studio!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/eD7LdS6bfOQ
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 ESPCI PARIS COURSE:

Bico, J., Reyssat, M., Bremond, N., & Fermigier, M. Vélocimétrie laser : Étude du sillage d'un obstacle trapézoïdal.
https://www.pmmh.espci.fr/~jbico/TP/L...

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RELATED HISTORICAL ARTICLE:

Reynolds, O. (1883). An Experimental Investigation of the Circumstances Which Determine Whether the Motion of Water Shall Be Direct or Sinuous, and of the Law of Resistance in Parallel Channels. Philosophical Transactions of the Royal Society of London, 174(0), 935–982. http://rstl.royalsocietypublishing.org/content/174/935

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CREDITS:

Original footage:
Hoon Kwon
Guillaume Durey

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Mathias Kasiulis

Directed and edited by:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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updated 7 years ago

The transition to turbulence

The Lutetium Project 2016-11-15 | Classic, yet beautiful fluid dynamics! This is the third entry in our series "Experiments in music"... and it's going to be the last for some time: next video on Dec 6th from our studio!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/eD7LdS6bfOQ
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 ESPCI PARIS COURSE:

Bico, J., Reyssat, M., Bremond, N., & Fermigier, M. Vélocimétrie laser : Étude du sillage d'un obstacle trapézoïdal.
https://www.pmmh.espci.fr/~jbico/TP/L...

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RELATED HISTORICAL ARTICLE:

Reynolds, O. (1883). An Experimental Investigation of the Circumstances Which Determine Whether the Motion of Water Shall Be Direct or Sinuous, and of the Law of Resistance in Parallel Channels. Philosophical Transactions of the Royal Society of London, 174(0), 935–982. http://rstl.royalsocietypublishing.org/content/174/935

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CREDITS:

Original footage:
Hoon Kwon
Guillaume Durey

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Mathias Kasiulis

Directed and edited by:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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The puzzling physics of sand

The Lutetium Project 2020-11-10 | Sand, is it a solid or a liquid? ⏳ How come it flows, but we can walk on it? In this last video from The Lutetium Project, we explore the puzzling physics of sand!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/Mg3E5JzS37o
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 PUBLICATIONS:

Étienne Guyon, Jean-Yves Delenne, and Farhang Radjai, Built on Sand, The MIT Press (2020),
https://mitpress.mit.edu/books/built-sand

Pierre-Gilles de Gennes in The physics of the bag of marbles, on the video library of the CNRS (1997),
http://videotheque.cnrs.fr/doc=264 (the language can be switched to english)

The serie of videos Grains de Bâtisseurs, of the Amàco (2015),
vimeo.com/channels/942027/173014142

Jacques Duran, Sables émouvants, Belin (2003), in French,
belin-editeur.com/sables-emouvants

Science étonnante #44, on the chaine ScienceEtonnante of David Louapre (2017), in French,
youtube.com/watch?v=1Uhbki--UPw

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STRUCTURE OF THE VIDEO:

00:00 Granulars: solids that flow
01:53 Vaulting and stable granular structures
03:11 Force chains
06:00 Dilatancy
07:05 Is sand a liquid, or a solid?

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CREDITS:

Host:
Julie Godefroid

Director:
Hoon Kwon

Writer:
Guillaume Durey

Science supervisor:
Pierre Jop

Animator:
Benjamin Alardin

Sound mixer:
Valentin Zorgnotti

Editor:
Guillaume Durey

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis, Quentin Magdelaine

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ACKNOWLEDGEMENTS:

Evelyne Kolb, PMMH laboratory, for the photoelastic grains,
https://blog.espci.fr/evelyne/home/

Collective Effects in Soft Matter team, Gulliver laboratory, for the high-speed camera https://www.ec2m.espci.fr/home/

Paul Boniface, Espace des Sciences Pierre-Gilles de Gennes,
https://www.groupe-traces.fr/membre/paul-bonifaec/

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
Fonds ESPCI Paris – fonds-espci-paris.org

Walking grains

The Lutetium Project 2020-11-03 | To a statistical physicist, a flock of birds is just like... a very peculiar liquid. 🐦 To better understand this analogy, Olivier Dauchot, PhD, mimicks their behavior in his lab... with walking grains! Confused yet?
↓ More info and links in the video description↓

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LINKS:

French version: youtu.be/DPmXvM0DfqA
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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MORE ABOUT THE INTERVIEWEE :

Olivier Dauchot is a Belgian-born physicist, who graduated from the Ponts et Chaussées engineering school before doing a PhD in physics at Université Pierre et Marie Curie.
He started doing research at the Saclay center of CEA, where he worked on dynamical systems, turbulence, and granular materials.
Since 2011, he is a CNRS researcher (Directeur de Recherche) and works at the Gulliver lab, at ESPCI, where he started experiments on non-living active matter like the walking grains.
There, he led the Collective Effects in Soft Matter (EC2M) team, an interdisciplinary team that worked on topics ranging from liquid crystals in confined geometries, to producing synthetic platelets, or avalanches of micrometric particles.
At the meeting point of experiments and theory, Olivier Dauchot (now head of the Gulliver lab) currently works on the solid phases of active matter, the glass transition of liquids, and the rheology of granulars.

Olivier Dauchot on Twitter: twitter.com/odauchot?lang=fr
The Gulliver lab: https://www.gulliver.espci.fr/?-home-

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FEATURED ARTICLES:

Julien Deseigne, Olivier Dauchot, and Hugues Chaté, Collective Motion of Vibrated Polar Disks, Phys. Rev. Lett. 105, 098001 (2010),
journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.098001

G. Briand and O. Dauchot, Crystallization of Self-Propelled Hard Discs, Phys. Rev. Lett. 117, 098004 (2016),
journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.098004

Guillaume Briand, Michael Schindler, and Olivier Dauchot, Spontaneously Flowing Crystal of Self-Propelled Particles, Phys. Rev. Lett. 120, 208001 (2018),
journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.208001

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STRUCTURE OF THE VIDEO:

00:00 Collective motion: a physics problem?
01:30 Non-living experiments of collective motion
02:19 Theoretical models
03:45 Thermodynamic equilibrium
04:43 How to make an active particle
07:16 From single walkers to collective motion
08:45 Velocity alignment mechanisms
10:48 Crowding active particles
11:20 The crystallisation transition
12:14 Crystallization of active particles
14:40 Towards living systems?
15:49 Conclusion

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CREDITS:

Host:
Mathias Kasiulis

Researcher:
Olivier Dauchot

Writers:
Mathias Kasiulis, Guillaume Durey

Director:
Hoon Kwon

Animator:
Benjamin Alardin

Editor:
Guillaume Durey

Sound mixer:
Valentin Zorgnotti

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

This video was shot on November 11th, 2018.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/le-fonds-de-l-espci/

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Light at your fingertips

The Lutetium Project 2020-10-27 | Fingerprints are used to identify criminals, but stop being reliable when damaged. How can we still read them? 🔎 With a state-of-the art imaging technique that shows their inside! Mystery solved, thanks to Egidijus Auksorius, PhD.
↓ More infos and links in the description ↓

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LINKS:

French version: youtu.be/alU3JbNmhhM
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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MORE ABOUT THE INTERVIEWEE :

Egidijus Auksorius graduated in physics from the University of Vilnius. He received the Ph.D. degree in physics from Imperial College London for work on Fluorescence lifetime imaging and super-resolution STED microscopy.
He then worked as a Research Fellow at Harvard Medical School in Boston and the Institute Langevin in Paris on Full-Field Optical Coherence Tomography (FF-OCT).
He is currently a Principal Investigator at the Centre for Physical Sciences and Technology in Vilnius and a Senior Researcher at the Polish Academy of Science in Warsaw, Physical Optics and Biophotonics Group.
His current research interests include the development and application of FF-OCT for eye imaging.

Egidijus Auksorius on Researchgate: researchgate.net/profile/Egidijus_Auksorius2
Egidijus Auksorius on Twitter: twitter.com/eauksorius
The Physical Optics and Biophotonics group website: http://www.pob-lab.com

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FEATURED ARTICLE:

Egidijus Auksorius, Kiran B. Raja, Berkay Topcu, Raghavendra Ramachandra, Christoph Busch, Claude A. Boccara, Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging, IEEE Access (2020) ieeexplore.ieee.org/document/8957575

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STRUCTURE OF THE VIDEO:

00:00 Volume imaging and echography
02:02 Uses of fingerprints
02:49 Total internal reflection, usual and frustrated
03:42 Standard fingerprint imaging and beyond
05:28 White light interferometry
07:05 Full-field optical coherence tomography
08:58 Application to fingerprints
10:26 Depth limitation due to scattering
10:54 Multiple scattering
12:00 Overcoming the depth limitation
13:04 Conclusion

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CREDITS:

Host:
Mathias Kasiulis

Researcher:
Egidijus Auksorius

Writers:
Mathias Kasiulis, Guillaume Durey

Director:
Hoon Kwon

Animators:
Benjamin Alardin, Hoon Kwon

Editor:
Guillaume Durey

Sound mixers:
Hoon Kwon, Valentin Zorgnotti

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

This video was shot on February 24th, 2018.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/le-fonds-de-l-espci/

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How to make a miniature river

The Lutetium Project 2020-10-20 | 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! ↓

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LINKS:

French version: youtube.com/watch?v=yY76LOO4P0E
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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MORE ABOUT THE INTERVIEWEE:

Anaïs Abramian is an alumna of ENS Lyon. She obtained a master's 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 d'Alembert as a postdoctoral researcher in 2019. Her research now focuses on cohesive granular materials.

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RELATED ARTICLE:

Anaïs Abramian, Olivier Devauchelle , Grégoire Seizilles & Eric Lajeunesse, Boltzmann Distribution of Sediment Transport, Physical Review Letters, 123, 014501 (2019)
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)
doi.org/10.1017/jfm.2018.1024

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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

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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.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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Waltzing defects

The Lutetium Project 2020-10-13 | 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

The orderly beauty of liquid crystals

The Lutetium Project 2020-10-06 | They're in everywhere in our screens, but what are liquid crystals? 🖥️ How are they liquid? Or crystalline? In this video, we discover the colourful physics of ordered fluids!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtube.com/watch?v=BwISZPGoDcM
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 PUBLICATIONS:

Patrick Oswald, Pawel Pieranski, Nematic and Cholesteric Liquid Crystals, Gordon and Breach (2000),
bit.ly/3dov4ne

Bill Hammack, LCD Monitor Teardown on the engineerguy channel (2011)
youtube.com/watch?v=jiejNAUwcQ8

Announcement of the Nobel Prize in Physics 2016,
youtube.com/watch?v=9qpoBG5hy-A

Teresa Lopez-Leon, Les cristaux liquides : quand l’ordre et le désordre se rencontrent, groupe Traces video (in French, 2017),
youtube.com/watch?v=4r0LG46Fs9U

Julien Bobroff, Microscope Polarisant, La Physique Autrement video (in French, 2016),
youtube.com/watch?v=9k-h3BCAj9I

Sophie Norvez's lectures on liquid crystals at ESPCI Paris

Teresa Lopez-Leon's introductory seminars/lectures on liquid crystals at ESPCI Paris

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STRUCTURE OF THE VIDEO:

00:00 What's a liquid crystal?
01:36 Elasticity of liquid crystals
02:00 Liquid crystals and polarized light
03:21 Birefringence
04:12 Liquid crystals in a polarizing microscope
04:56 Liquid crystal displays
06:09 Liquid crystals and topology
07:18 Conclusion

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CREDITS:

Host:
Julie Godefroid

Director:
Hoon Kwon

Writer:
Guillaume Durey

Science supervisor:
Teresa Lopez-Leon

Animator:
Benjamin Alardin

Sound mixer:
Valentin Zorgnotti

Editor:
Guillaume Durey

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis, Quentin Magdelaine

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ACKNOWLEDGEMENTS:

Collective Effects in Soft Matter team, Gulliver laboratory,
https://www.ec2m.espci.fr/home/

Paul Boniface, Espace des Sciences Pierre-Gilles de Gennes, for his valuable advice,
https://www.groupe-traces.fr/membre/paul-bonifaec/

Alexandre Darmon, former PhD student in the Gulliver lab, for his video of a phase transition in cholesteric liquid crystal shells.
http://artinresearch.com

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
Fonds ESPCI Paris – fonds-espci-paris.org

Warm light versus cold light

The Lutetium Project 2020-09-29 | What's the difference between a LED and a lightbulb? 💡 Did you know there were two kinds of light to your life? In this video, we shed light on luminescence and incandescence!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/AvSyiW7i1KU
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 PUBLICATIONS:

Bernard Valeur, Molecular fluorescence: Principles and Applications, Wiley (2012)
onlinelibrary.wiley.com/doi/book/10.1002/9783527650002

Jean-Michel Raimond, Atoms and Photons lecture notes, ICFP Masters program,
http://www.lkb.upmc.fr/cqed/wp-content/uploads/sites/14/2016/09/m2icfpatomsphotons.pdf

Richard Feynman's Lectures on Physics, Volume 1, §§ 41.2 and 41.3,
https://www.feynmanlectures.caltech.edu/

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STRUCTURE OF THE VIDEO:

00:00 Light and matter
01:55 Luminescence
02:32 Photoluminescence
04:08 Chemiluminescence
05:38 Electroluminescence
06:01 Incandescence
07:14 Conclusion

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CREDITS :

Host:
Julie Godefroid

Director:
Hoon Kwon

Science supervisor:
Sophie Norvez

Script:
Noémi Thomazo, Mathias Kasiulis

Animators:
Hoon Kwon, Benjamin Alardin

Editors:
Kévin Lamothe, Guillaume Durey

Sound mixer:
Valentin Zorgnotti

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis, Quentin Magdelaine

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ACKNOWLEDGEMENTS:

Paul Boniface, Espace des Sciences Pierre-Gilles de Gennes, for the UV gun and fluorescent objects,
https://www.groupe-traces.fr/membre/paul-bonifaec/

Sophie Norvez, Corinne Soulié, Chimie Moléculaire, Macromoléculaire, Matériaux, for the chemiluminescence reaction of the ruthenium complex

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
Fonds ESPCI Paris – fonds-espci-paris.org

Impacting droplets

The Lutetium Project 2020-09-22 | Our series "Experiments in music" returns with this long-awaited episode! 💧 Water drops, high-speed cameras and macro lenses: all we need to reveal the beauty of impacts on superhydrophobic surfaces!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/inwdKC3qUrc
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:

Pierre Chantelot, Ali Mazloomi Moqaddam, Anaïs Gauthier, Shyam S. Chikatamarla, Christophe Clanet, Ilya V. Karlin et David Quéré
Water ring-bouncing on repellent singularities
Soft Matter, 14, 2227-2223, 2018
pubs.rsc.org/en/content/articlelanding/2018/sm/c7sm02004j

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CREDITS:

Original footage:
Pierre Chantelot, Quentin Magdelaine, Guillaume Durey

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Quentin Magdelaine

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

Microfluidics Interviews #2: Paper-based microfluidics

The Lutetium Project 2020-09-15 | You don't need an expensive lab to do microfluidics! 🧬 In our last interview in this series, we learn how to make low-cost viral screening tests on paper chips with Laura Magro, PhD!
↓ More infos and links in the description ↓

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LINKS:

French version: youtube.com/watch?v=tEx7jjKFbDg
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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MORE ABOUT THE INTERVIEWEE :

Laura Magro is an alumnus of ESPCI Paris, and of Université Paris Diderot, where she obtained a master's degree in Complex Systems, with a major in Microfluidics. In 2016, she defended her thesis, titled "Paper microfluidics : from liquid flow studies to Ebola virus diagnostics in Guinea", that was conducted in the Microfluidics, MEMs and Nanostructures team of the Gulliver lab, at ESPCI Paris. She joined CEEBIOS in 2017, a company that promotes the development of biomimetic technologies applied to eco-responsible innovation. She has been the company's deputy director in charge of scientific development since 2018.

Website of CEEBIOS: ceebios.com

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FEATURED ARTICLES:

Laura Magro, Camille Escadafal, Pierre Garneret, Béatrice Jacquelin, Aurélia Kwasiborski, Jean-Claude Manuguerra, Fabrice Monti, Anavaj Sakuntabhai, Jessica Vanhomwegen, Pierre Lafayee & Patrick Tabeling, Paper microfluidics for nucleic acid amplification testing (NAAT) of infectious diseases, Lab Chip, 2017,17, 2347-2371
pubs.rsc.org/en/content/articlelanding/2017/lc/c7lc00013h/unauth#!divAbstract

Laura Magro, Béatrice Jacquelin, Camille Escadafal, Pierre Garneret, Aurélia Kwasiborski, Jean-Claude Manuguerra, Fabrice Monti, Anavaj Sakuntabhai, Jessica Vanhomwegen, Pierre Lafaye & Patrick Tabeling, Paper-based RNA detection and multiplexed analysis for Ebola virus diagnostics, Scientific Reports volume 7, Article number: 1347 (2017)
nature.com/articles/s41598-017-00758-9

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VIDEO BREAKDOWN:

00:00 Microfluidics: too unpractical?
01:34 Advantages of paper-based microfluidics
02:23 Simple examples of paper chips
05:22 Paper-based diagnosis
06:18 Pathogen detection methods: an overview
07:17 Advantages of nucleic acid testing
08:13 From the lab to the field: Ebola testing
09:10 Towards diagnoses on smartphones?
10:18 Conclusion

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CREDITS :

Host:
Mathias Kasiulis

Researcher:
Laura Magro

Writers:
Guillaume Durey, Mathias Kasiulis

Director:
Hoon Kwon

Animations:
Hoon Kwon

Editing:
Pierre Dupont, Guillaume Durey

Studio, Visual Identity:
Juliette Nier

Theme Music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

This video was shot on May 17th, 2016.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – fonds-espci-paris.org

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Microfluidics Interviews #1: In situ chemistry

The Lutetium Project 2020-09-08 | Can you create a drug directly in a living organism? 💊 Yes, by combining microfluidics with acoustics and organic chemistry! We interview Marine Bézagu, PhD, to know more.
↓ More infos and links in the description ↓

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LINKS:

French version: youtube.com/watch?v=MaVk_xWRtCU
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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MORE ABOUT THE INTERVIEWEE:

Marine Bézagu is an alumnus of ESPCI Paris, and of Université Pierre et Marie Curie, where she obtained a master's degree in Molecular Chemistry. In 2015, she defended her PhD thesis, titled "Ultrasound-induced chemical reactions and local mixing : towards targeted chemotherapy", that was conducted between the Laboratoire de Chimie Organique, the Gulliver lab and the Institut Langevin at ESPCI Paris. She kept working on this project as a post-doctoral researcher at Institut Langevin for an extra year.
Between 2016 and 2020, she worked as a research scientist in chemical formulation for ADOCIA, a company specialized in developing innovative formulations for therapeutical molecules. She recently moved to a Research & Development Project Manager position at InnovaFeed, a young biotech company that commercializes insect proteins.

Marine Bézagu on LinkedIn: fr.linkedin.com/in/mbezagu

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FEATURED ARTICLE:

Marine Bezagu, Claudia Errico, Victor Chaulot-Talmon, Fabrice Monti, Mickael Tanter, Patrick Tabeling, Janine Cossy, Stellios Arseniyadis, & Olivier Couture, High Spatiotemporal Control of Spontaneous Reactions Using Ultrasound-Triggered Composite Droplets, J. Am. Chem. Soc. 2014, 136, 20, 7205–7208
pubs.acs.org/doi/abs/10.1021/ja5019354

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VIDEO BREAKDOWN:

00:00 Targeted drug delivery
01:27 In situ chemistry: principle
03:33 Encapsulation method
05:30 Triggering the reaction
06:55 Model experiment: principle
07:43 Fluorescence
07:57 Model experiment: realization
08:39 Local synthesis of anticancer drugs
09:46 Conclusion

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CREDITS:

Host:
Guillaume Durey

Researcher:
Marine Bézagu

Script:
Martin Cattoen, Guillaume Durey, Mathias Kasiulis

Director:
Hoon Kwon

Animators:
Benjamin Alardin, Hoon Kwon

Editors:
Guillaume Durey, Hoon Kwon

Studio, visual identity:
Juliette Nier

Theme music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

This video was shot on September 16th, 2015.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – fonds-espci-paris.org
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Were back for Season 2!

The Lutetium Project 2020-09-01 | Hey! Remember us? Surprise, we're back for Season 2! ⏪ This fall, don't miss our weekly new videos combining experimental research, artistic creation and science outreach!
↓ More infos and links in the description! ↓

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LINKS :

French version: youtube.com/watch?v=dUsZRMjdsto
Follow us on Twitter : twitter.com/TheLuProject
Visit our website : https://www.lutetium.paris/en

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CREDITS :

Directed and edited by:
Hoon Kwon

Written by:
Guillaume Durey, Hoon Kwon, Mathias Kasiulis

Hosted by:
Guillaume Durey (and Hoon Kwon)

Produced by:
Guillaume Durey, Mathias Kasiulis, Quentin Magdelaine

Visual identity, set design:
Juliette Nier

Original music, opening titles:
Pierre David

This video was shot on January 19th, 2019.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
Fonds ESPCI Paris – fonds-espci-paris.org

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Swimming droplets

The Lutetium Project 2017-12-20 | Have you ever seen self-propelled swimming droplets? Using microfluidics, and with a bit of physical chemistry, it can be done! It's a new Experiment in music from The Lutetium Project!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtube.com/watch?v=Oa61pQV7LzA
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:

Ziane Izri, Marjolein N. van der Linden, Sébastien Michelin et Olivier Dauchot,
Self-Propulsion of Pure Water Droplets by Spontaneous Marangoni-Stress-Driven Motion
Physical Review Letters, 113, 248302 , 2014
DOI: 10.1103/PhysRevLett.113.248302
journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.248302

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CREDITS:

Original footage:
Ziane Izri, Marjolein N. van der Linden

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Mathias Kasiulis

Directed and edited by:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/fonds-espci-paris-448/

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Microfluidics Adventures #3: Microfluidic chips

The Lutetium Project 2017-11-29 | The Lutetium Project is back with part three of our Microfluidics Adventures! We're gonna show you microfluidic chips as you've never seen them before. Let’s mix some microdroplets!
↓ More infos and links in the description ↓

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LINKS:

French version: youtube.com/watch?v=wyWGcL3_d00
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 BOOK:

Patrick Tabeling, Introduction to microfluidics, Oxford University Press (2005) https://books.google.fr/books/about/Introduction_to_Microfluidics.html

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RELATED ARTICLES :

Lucas Frenz, Abdeslam El Harrak, Matthias Pauly, Sylvie Bégin-Colin, Andrew Griffiths, Jean-Christophe Baret
Droplet-Based Microreactors for the Synthesis of Magnetic Iron Oxide Nanoparticles
Angewandte Chemie International Edition 47: 6817–6820 (2008)
http://onlinelibrary.wiley.com/doi/10.1002/anie.200801360/full

Jeremy Agresti, Eugene Antipov, Adam Abate, Keunho Ahn, Amy Rowat, Jean-Christophe Baret, Manuel Marquez, Alexander Klibanov, Andrew Griffiths and David Weitz
Ultrahigh-throughput screening in drop-based microfluidics for directed evolution
PNAS (2010), doi: 10.1073/pnas.0910781107
http://www.pnas.org/content/107/9/4004.short

All of the research footage used in this video can be found on the YouTube channel of the Biochemistry Lab at ESPCI : youtube.com/channel/UCSFx6B792i03Nj908-_LTUg/videos

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ACKNOWLEDGEMENTS:

Philippe Nghe, Biochemistry Lab https://www.lbc.espci.fr/
Paul Boniface, Espace des sciences Pierre-Gilles de Gennes espgg.org
Fabrice Monti, Microfactory SAS, http://www.microfactory.eu/
MécaWet team, PMMH lab, https://www.pmmh.espci.fr/~jbico/
EC2M team, Gulliver lab, https://www.ec2m.espci.fr/
Perrine Franquet, Institut Pierre-Gilles de Gennes pour la microfluidique https://www.institut-pgg.fr/

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STRUCTURE OF THE VIDEO:

00:00 Using the chip
01:30 Output: microdroplets!
02:28 Why make microdroplets?
03:24 Laminar and turbulent flows
05:03 Mixing at the microscale
05:36 Conclusion

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CREDITS:

Host:
Marie Boulez

Directing, animation:
Hoon Kwon

Scenario:
Guillaume Durey, Mathias Kasiulis, Arnaud Reitz

Editing:
Léa Bello, Hoon Kwon

Studio, visual identity:
Juliette Nier

Theme music, background music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir...

Microfluidics Adventures #2: How to build a miniature world

The Lutetium Project 2017-05-30 | The Microfluidics Adventures of the Lutetium Project, part two! Microfabrication 101: you’ll discover how microfluidics systems are made, from start to finish!
↓ More infos and links in the description ↓

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LINKS:

French version: youtu.be/7mptrk-Pmts
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 BOOK:

Patrick Tabeling, Introduction to microfluidics, Oxford University Press (2005) https://books.google.fr/books?id=S9AT...

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IMAGES:

Microfluidic chip from Institut Pierre-Gilles de Gennes, Laurent Ollier institut-pgg.com

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ACKNOWLEDGEMENTS:

MécaWet team, PMMH lab https://www.pmmh.espci.fr/~jbico/page_perso_en.html
Mathilde Reyssat, Bruno Teste, Kamel Khelloufi, EC2M team, Gulliver lab https://www.ec2m.espci.fr/home/
Perrine Franquet, Institut Pierre-Gilles de Gennes pour la microfluidique institut-pgg.com

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STRUCTURE OF THE VIDEO:

00:00 A lab on a chip?
01:16 Fabrication steps
02:50 Making the mold in a clean room
03:57 Molding the circuit into PDMS
04:55 Gluing the circuit onto glass with plasma
05:23 Conclusion

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CREDITS:

Host:
Marie Boulez

Directing, animation:
Hoon Kwon

Scenario:
Guillaume Durey, Mathias Kasiulis, Arnaud Reitz

Editing:
Léa Bello, Hoon Kwon

Studio, visual identity:
Juliette Nier

Theme music, background music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir...

Microfluidics Adventures #1: Physics at the microscale

The Lutetium Project 2017-05-02 | The Microfluidics Adventures of the Lutetium Project, part one! In this first video, we’ll tackle the physics of the microscopic world. You’ll know why the laws of physics seem so weird at the microscale...
↓ More infos and links in the description ↓

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LINKS:

French version: youtu.be/oPJfXSb5QYw
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 BOOK:

Patrick Tabeling, Introduction to microfluidics, Oxford University Press (2005) https://books.google.fr/books?id=S9ATDAAAQBAJ

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MEMs IMAGES FROM:

Bojan Ilic, Harold Craighead, Slava Krylov, Wageesha Senaratne, Christopher Ober, Pavel Neuzil, Attogram detection using nanoelectromechanical oscillators, Journal of Applied Physics 95, 3694 (2004) http://aip.scitation.org/doi/abs/10.1063/1.1650542

Louis Laberge Lebel, Brahim Aissa, My Ali El Khakani, Daniel Therriault, Ultraviolet-Assisted Direct-Write Fabrication of Carbon Nanotube/Polymer Nanocomposite Microcoils, Advanced Materials 22, 592 (2010) http://onlinelibrary.wiley.com/doi/10.1002/adma.200902192/abstract

Sandia National Laboratories News Releases, New five-level layering process pioneered by Sandia promises more reliable, complex micromachines (1999) http://www.sandia.gov/media/NewsRel/NR1999/layer.htm

Cornell Chronicle, Smallest guitar, about the size of a human blood cell, illustrates new technology for nano-sized electromechanical devices (1997) http://www.news.cornell.edu/stories/1997/07/worlds-smallest-silicon-mechanical-devices-are-made-cornell

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IMAGES:

Microfluidic chip from Institut Pierre-Gilles de Gennes, Proxima institut-pgg.com
Blood vessels, The Franklin Institute https://www.fi.edu/heart/blood-vessels
Closeup of skeeterbugs floating on the water surface, Daniel Schweinert, Shutterstock shutterstock.com/video/clip-11013299-stock-footage-closeup-of-skeeterbugs-floating-on-the-water-surface.html
Suncus Etruscus, Wikimedia Commons, Trebol-A commons.wikimedia.org/wiki/File:Suncus_etruscus.jpg
Gear with ant for scale, Wikimedia Commons, Denis Elbl, KIT commons.wikimedia.org/wiki/File:Ant_with_gear.jpg

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STRUCTURE OF THE VIDEO:

00:00 Microfluidics: what is it?
00:41 Scaling laws and size effects
02:00 Physics at the microscale
03:48 Conclusion

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CREDITS:

Host:
Marie Boulez

Directing, animation:
Hoon Kwon

Scenario:
Guillaume Durey, Mathias Kasiulis, Arnaud Reitz

Editing:
Léa Bello, Hoon Kwon

Studio, visual identity:
Juliette Nier

Theme music, background music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/le-fonds-de-l-espci/

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Bursting droplets

The Lutetium Project 2017-03-07 | Music for a mesmerizing research experiment, which just made the cover of the journal Physical Review Letters, and which you can even do at home!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/h3iUy4Wg8lg
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:

Ludovic Keiser, Hadrien Bense, Pierre Colinet, José Bico and Étienne Reyssat,
Marangoni Bursting: Evaporation-Induced Emulsification of Binary Mixtures on a Liquid Layer
Physical Review Letters, 118, 074504, 2017
DOI: 10.1103/PhysRevLett.118.074504
journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.074504

Physique et Mécanique des Milieux Hétérogènes, UMR CNRS 7636, ESPCI Paris, UPMC, Paris Diderot,
https://www.pmmh.espci.fr/~jbico/Research_en.html

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RELATED VIDEO:

Learn more on surface tension with our previous video: youtu.be/sdOp2X9HLFA

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CREDITS:

Original footage:
Ludovic Keiser, Hadrien Bense, Guillaume Durey, Hoon Kwon

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:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/le-fonds-de-l-espci/

Droplets with a twist

The Lutetium Project 2017-01-24 | Always dreamed of coiling thin fibers around tiny droplets? You’ll end up a specialist of elastocapillarity after our first interview! Featuring Pr. Kari Dalnoki-Veress.
↓ More infos and links in the description ↓

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LINKS:

French version: youtu.be/6I138-zs04k
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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MORE ABOUT THE INTERVIEWEE :

Kari Dalnoki-Veress has been a Professor at McMaster University, Ontario, since 2010. There, he leads the Dalnoki-Veress Lab, a research group that studies experimental soft matter, and in particular the properties of polymers and living systems.
The topics he has worked on range from the mechanical properties of nematods like C. Elegans, to the glass transition of polymers, but also include elastocapillarity in fibers and films of polymers.

Kari Dalnoki-Veress on Twitter: twitter.com/kdalnokiveress
Kari's personal page: http://kdvlab.net/kdv
The Dalnoki-Veress Lab: http://kdvlab.net

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FEATURED ARTICLE:

Rafael D. Schulman, Amir Porat, Kathleen Charlesworth, Adam Fortais, Thomas Salez, Elie Raphaël & Kari Dalnoki-Veress, Elastocapillary bending of microfibers around liquid droplets, Soft Matter (2017) http://pubs.rsc.org/en/content/articlelanding/2016/sm/c6sm02095j

Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada http://kdvlab.net

Physico-Chimie Théorique, Gulliver, UMR CNRS 7083, ESPCI Paris, PSL Research University https://www.gulliver.espci.fr/

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RELATED WORKS:

Hervé Elettro, Sébastien Neukirch, Fritz Vollrath & Arnaud Antkowiak, In-drop capillary spooling of spider capture thread inspires hybrid fibers with mixed solid–liquid mechanical properties, PNAS (2016) http://www.pnas.org/content/113/22/6143

José Bico, Benoît Roman, Loïc Moulin & Arezki Boudaoud, Adhesion: Elastocapillary coalescence in wet hair. Nature 432, 690 (2004) http://www.nature.com/nature/journal/v432/n7018/full/432690a.html

Romain Labbé & Camille Duprat, Drainage between two elastic fibers (in preparation)

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STRUCTURE OF THE VIDEO:

00:00 Solids and elasticity
01:51 Principle of elastocapillarity
04:22 Wetting
05:56 Coiling a fiber around a droplet
07:12 A few other experiments
09:25 Coiling a fiber around... a bubble !
12:32 Conclusion

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CREDITS:

Host:
Guillaume Durey

Researcher:
Kari Dalnoki-Veress

Scenario:
Guillaume Durey, Mathias Kasiulis

Directing, animation:
Hoon Kwon

Editing:
Hoon Kwon, Léa Bello

Studio, visual identity:
Juliette Nier

Theme music, background music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

This video was shot on June 2nd, 2016.

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris
le Fonds ESPCI Paris – https://www.espci.fr/fr/nous-soutenir/le-fonds-de-l-espci/

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On the surface of liquids

The Lutetium Project 2016-12-07 | Why does a jet of water break into droplets? How do you make perfectly spherical droplets? We’re talking surface tension in this first video in our studio! Come back to us next year in early January for our first interview!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/UKtz9VdYPDc
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 ARTICLES :

Pierre-Gilles de Gennes, Françoise Brochard-Wyart & David Quéré, Capillarity and wetting phenomena: drops, bubbles, pearls, waves. Springer (2004) http://www.springer.com/us/book/9780387005928

Christophe Clanet, Cours de mécanique des fluides, ESPCI Paris

Antonin Marchand, Joost H. Weijs, Jacco H. Snoeijer & Bruno Andreotti, Why is surface tension a force parallel to the interface? American Journal of Physics, 79, 999 (2011) http://aapt.scitation.org/doi/10.1119/1.3619866

Michael V. Berry, The molecular mechanism of surface tension, Physics Education 79, 79 (1971) http://iopscience.iop.org/article/10.1088/0031-9120/6/2/001

Joseph Plateau, Mémoire sur les phénomènes que présente une masse liquide et soustraite à l’action de la pesanteur, Nouveaux mémoires de l’Académie Royale des Sciences et Belles-Lettres de Bruxelles, 16, 1 (1843) https://books.google.fr/books?id=b1kTAAAAQAAJ&pg=PA3&lpg=PA3&ots=ynxnWosqjK&sig=kqVt9-duwGPRYqU3G6UkrawWfbU&hl=fr&sa=X&ved=0ahUKEwilm4L619zQAhWGECwKHYUTDjEQ6AEIMTAG#v=onepage

Masahiro I. Kohira, Yuko Hayashima, Masaharu Nagayama & Satoshi Nakata, Synchronized self-motion of two camphor boats, Langmuir 17, 7124 (2001) http://pubs.acs.org/doi/abs/10.1021/la010388r

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STRUCTURE OF THE VIDEO:

00:00 The surface tension of liquids
01:30 Gravity versus surface tension
02:09 Plateau droplets
02:42 Rayleigh-Plateau instability
03:15 Why surface "tension"?
05:00 Surfactants and Marangoni flows
07:03 Conclusion

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CREDITS:

Host:
Julie Godefroid

Director, editor, animator:
Hoon Kwon

Script:
Quentin Magdelaine, Guillaume Durey

Science supervisor:
Marc Fermigier

Studio, visual identity:
Juliette Nier

Theme music, background music:
Pierre David

Production:
Guillaume Durey, Mathias Kasiulis

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FOOTAGE:

Liquid Ping Pong in Space, NASA Ultra High Definition youtube.com/watch?v=TLbhrMCM4_0

Plateau’s experiment was conducted with the team from the MOOC « interfacial hydrodynamics » by PSL: Lucie Domino, Martin Coux, Marc Fermigier

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ACKNOWLEDGMENTS:

Team MécaWet, PMMH laboratory, for the DSLR camera https://www.pmmh.espci.fr/~jbico/Research_en.html/

Team Effets Collectifs et Matière Molle, Gulliver laboratory, for the high-speed camera https://www.ec2m.espci.fr/

Ramiro Godoy-Diana, PMMH laboratory, for the searchlights https://blog.espci.fr/ramiro/

Emmanuel Fort's lab, Langevin Institute, for the ThorLabs https://blog.espci.fr/efort/

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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ERRATA:

A group of agitated molecules in a disordered state is the definition of a fluid phase, meaning that it applies both to liquids and gases. A more precise definition of liquids would be the following: a dense group of agitated molecules in a disordered state, where the intermolecular distance is of the same order of magnitude as the molecular size.

Carlo Marangoni is not actually the first to study the so-called "Marangoni flows". James Thomson explained correctly these flows for the first time in 1855, and some works could even date back to 1686. Source: L. E. Scriven & C.V. Sternling, The Marangoni Effects, Nature, 187, 186 (1960) nature.com/articles/187186a0

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Dual walkers: drops and waves

The Lutetium Project 2016-10-25 | Here's the second episode in our series "Experiments in music", where bouncing droplets become walkers! Come back to us in three weeks for the next episode!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/QCiTD_9lE_0
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:

Couder, Y., & Fort, E. (2012). Probabilities and trajectories in a classical wave-particle duality. In Journal of Physics: Conference Series (Vol. 361, No. 1, p. 012001). IOP Publishing.
http://iopscience.iop.org/article/10.1088/1742-6596/361/1/012001

Learn more at: dualwalkers.com

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CREDITS:

Original footage:
Yves Couder and coworkers

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Mathias Kasiulis

Directed and edited by:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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Never-ending bouncing droplets

The Lutetium Project 2016-10-04 | Here's the first episode in our series "Experiments in music", focusing on crystals of bouncing droplets! Come back to us in three weeks for the next episode!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/pHpsLboMni8
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:

Eddi, A., Decelle, A., Fort, E., & Couder, Y. (2009). Archimedean lattices in the bound states of wave interacting particles. EPL (Europhysics Letters), 87(5), 56002.
http://iopscience.iop.org/article/10.1209/0295-5075/87/56002

Learn more at: dualwalkers.com

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CREDITS:

Images:
Antonin Eddi, Emmanuel Fort, Yves Couder

Original soundtrack:
Julien Mazet

Visual identity:
Juliette Nier

Theme music:
Pierre David

Written and produced by:
Guillaume Durey, Mathias Kasiulis

Directed and edited by:
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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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The Lutetium Project: Teaser

The Lutetium Project 2016-09-16 | And here we go! Here's a quick teaser of what you can expect to see on the Lutetium Project YouTube channel every three weeks!
↓ More infos and links in the description! ↓

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LINKS:

French version: youtu.be/8w3O4enMx7A
Follow us on Twitter : twitter.com/TheLuProject
Visit our website: https://www.lutetium.paris/en

---------------------------------------------------------------------
CREDITS:

Directed and edited by:
Hoon Kwon

Written by:
Hoon Kwon, Mathias Kasiulis

Hosted by:
Mathias Kasiulis

Produced by:
Guillaume Durey, Mathias Kasiulis

Visual identity, set design:
Juliette Nier

Original music, opening titles:
Pierre David

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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 Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – espgg.org
ESPCI Alumni – https://espci.alumni.paris

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