The Lutetium Project
The Lutetium Project
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The puzzling physics of sand
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: ua-cam.com/video/Mg3E5JzS37o/v-deo.html
Subscribe to the channel: ua-cam.com/users/thelutetiumproject
Follow us on Twitter: TheLuProject
Visit our website: 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),
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),
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,
www.belin-editeur.com/sables-emouvants
Science étonnante #44, on the chaine ScienceEtonnante of David Louapre (2017), in French,
ua-cam.com/video/1Uhbki--UPw/v-deo.html
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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,
blog.espci.fr/evelyne/home/
Collective Effects in Soft Matter team, Gulliver laboratory, for the high-speed camera www.ec2m.espci.fr/home/
Paul Boniface, Espace des Sciences Pierre-Gilles de Gennes,
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 - www.univ-psl.fr
ESPCI Paris - www.espci.fr
Espace des sciences Pierre-Gilles de Gennes - www.espgg.org
ESPCI Alumni - espci.alumni.paris
Fonds ESPCI Paris - www.fonds-espci-paris.org/
Переглядів: 6 328

Відео

Walking grains
Переглядів 2 тис.3 роки тому
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↓ ­ LINKS: French version: ua-cam.com/video/DPmXvM0DfqA/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follo...
Light at your fingertips
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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 ↓ ­ LINKS: French version: ua-cam.com/video/alU3JbNmhhM/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumpr...
How to make a miniature river
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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: ua-cam.com/video/yY76LOO4P0E/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow u...
Waltzing defects
Переглядів 1,6 тис.3 роки тому
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! ↓ ­ LINKS: French version: ua-cam.com/video/V-RdcIlFwn0/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuProject Visit our website...
The orderly beauty of liquid crystals
Переглядів 39 тис.3 роки тому
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! ↓ ­ LINKS: French version: ua-cam.com/video/BwISZPGoDcM/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuProject ...
Warm light versus cold light
Переглядів 2 тис.3 роки тому
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! ↓ ­ LINKS: French version: ua-cam.com/video/AvSyiW7i1KU/v-deo.html Subscribe to the channel: ua-cam.com/users/thelutetiumproject Follow us on Twitter: TheLuProject Vi...
Impacting droplets
Переглядів 3,1 тис.3 роки тому
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! ↓ ­ LINKS: French version: ua-cam.com/video/inwdKC3qUrc/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : t...
Microfluidics Interviews #2: Paper-based microfluidics
Переглядів 7 тис.3 роки тому
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 ↓ ­ LINKS: French version: ua-cam.com/video/tEx7jjKFbDg/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuPr...
Microfluidics Interviews #1: In situ chemistry
Переглядів 3,5 тис.3 роки тому
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 ↓ ­ LINKS: French version: ua-cam.com/video/MaVk_xWRtCU/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuProject Visit...
We're back for Season 2!
Переглядів 2,8 тис.3 роки тому
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! ↓ ­ LINKS : French version: ua-cam.com/video/dUsZRMjdsto/v-deo.html Follow us on Twitter : TheLuProject Visit our website : www.lutetium.paris/en ­ CREDITS : Directed and...
Swimming droplets
Переглядів 6 тис.6 років тому
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! ↓ ­ LINKS: French version: ua-cam.com/video/Oa61pQV7LzA/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : The...
Microfluidics Adventures #3: Microfluidic chips
Переглядів 112 тис.6 років тому
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 ↓ ­ LINKS: French version: ua-cam.com/video/wyWGcL3_d00/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuPro...
Microfluidics Adventures #2: How to build a miniature world
Переглядів 35 тис.7 років тому
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 ↓ ­ LINKS: French version: ua-cam.com/video/7mptrk-Pmts/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitter : TheLuProject Visit our website...
Microfluidics Adventures #1: Physics at the microscale
Переглядів 34 тис.7 років тому
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 ↓ ­ LINKS: French version: ua-cam.com/video/oPJfXSb5QYw/v-deo.html Subscribe to the channel : ua-cam.com/users/thelutetiumproject Follow us on Twitt...
Bursting droplets
Переглядів 29 тис.7 років тому
Bursting droplets
Droplets with a twist
Переглядів 19 тис.7 років тому
Droplets with a twist
On the surface of liquids
Переглядів 9 тис.7 років тому
On the surface of liquids
The transition to turbulence
Переглядів 38 тис.7 років тому
The transition to turbulence
Dual walkers: drops and waves
Переглядів 9 тис.7 років тому
Dual walkers: drops and waves
Never-ending bouncing droplets
Переглядів 24 тис.7 років тому
Never-ending bouncing droplets
The Lutetium Project: Teaser
Переглядів 7 тис.7 років тому
The Lutetium Project: Teaser

КОМЕНТАРІ

  • @rubaethhossain4893
    @rubaethhossain4893 2 місяці тому

    Very nice, I think microfluidics is the future. Imagine a bio-chip that reads off your current health status, that would be very cool.

  • @NyamtsetsegTour
    @NyamtsetsegTour 2 місяці тому

    so beautiful art and physics, easily subscribed <3 Thanks for keep inspiring us

  • @ZeranZeran
    @ZeranZeran 3 місяці тому

    Thank you for the subtitles, it is much appreciated.

  • @householdemail1305
    @householdemail1305 3 місяці тому

    It will become fluid exchange circuits.

  • @Shrimzys_Buttplug
    @Shrimzys_Buttplug 3 місяці тому

    what is this witchcraft

  • @mriidulbhatia
    @mriidulbhatia 4 місяці тому

    wow. a pristine example of visual arts at its finest.

  • @kateyelkovan
    @kateyelkovan 5 місяців тому

    this video is so cool

  • @dashinggamerz9236
    @dashinggamerz9236 6 місяців тому

    It is Schrodinger's bi Billi(Cat)

  • @federicocorvisieri5521
    @federicocorvisieri5521 7 місяців тому

    Can someone tell me which is the song’s name please? that is very beautiful

  • @leonardodeangelis4403
    @leonardodeangelis4403 7 місяців тому

    You deserve more subscribers

  • @Movieclip.s589
    @Movieclip.s589 8 місяців тому

    God of physics is here 😍

  • @user-th7fb2pg9q
    @user-th7fb2pg9q 9 місяців тому

    Good en well explained thanks

  • @pukegirl
    @pukegirl 9 місяців тому

    I'm tripping balls great video

  • @FabienCharles108
    @FabienCharles108 10 місяців тому

    Fantastic video!!!

  • @williamfraser
    @williamfraser 10 місяців тому

    Loved it, thanks.

  • @rohitvangari7721
    @rohitvangari7721 10 місяців тому

    approx.. how much it will cost to fabricate this type of chips.

  • @thejoojoo9999
    @thejoojoo9999 11 місяців тому

    Great video ! Very clear and concise, and beautiful visuals and animations.

  • @salah3beed
    @salah3beed Рік тому

    This is absolutely adorable!

  • @o1ken_ez
    @o1ken_ez Рік тому

    im watching this on an LED display

  • @omkarrj360
    @omkarrj360 Рік тому

    Soothing

  • @mohammednasiruwana8741
    @mohammednasiruwana8741 Рік тому

    Very exciting work. Can you help connect with the lab

  • @nano7586
    @nano7586 Рік тому

    Microfluidics is so interesting. But I'm worried about the accuracies and precisions when mixing liquids. What's the progress here?

  • @lelsewherelelsewhere9435
    @lelsewherelelsewhere9435 Рік тому

    Really great video!! Going to use this as my go to when explaining to others.

  • @Re3tard
    @Re3tard Рік тому

    Thank you for the info.

  • @mmicoski
    @mmicoski Рік тому

    Amazing

  • @salmagamal5676
    @salmagamal5676 Рік тому

    Very very well explained thank you!

  • @jameslockwood8008
    @jameslockwood8008 Рік тому

    4:51 for a reminder of your mortality

  • @geckolantern
    @geckolantern Рік тому

    This video is incredibly clear and concise. Thank you!

  • @v.prestorpnrcrtlcrt2096
    @v.prestorpnrcrtlcrt2096 Рік тому

    Do you screw with sound because you're a nut? up down up down

  • @voila8562
    @voila8562 Рік тому

    Hello to your young team ! Very nice channel and very clean and educational content. I'm discovering it too late :) I have a question to ask you about microfluidics, which I've been interested in recently. For the moment, I think that these "lab on a chip" are mainly used to replace the Petri dishes of the laboratories, a kind of culture system more close to the living conditions and thus more reliable to monitor the evolution of a drug in the body. But could we make real chips, real electronic circuits with it ? So far, I have the impression that it is a plumbing system on a micrometer scale, but if this plumbing were crossed by a electronically conductive material, wouldn't we have an electronic "chip" ? For example, couldn't we also make a MEA (Multi Electrode Array) with microfluidics ? If you have any information on this, I would be very interested. Thanks again for your hard work :)

  • @GUmesh-gu9ho
    @GUmesh-gu9ho Рік тому

    Simply amazing !!!👌👌👌

  • @asapfilms2519
    @asapfilms2519 Рік тому

    Hi I am 40 and I am falling in love with this field of science. Is it possible for me to work in this field?

  • @paulphilpott2232
    @paulphilpott2232 Рік тому

    How does this not visually explain the existence of matter? No, go ahead. Change my mind. I'll wait.

  • @Ritternkreis
    @Ritternkreis Рік тому

    If you are last year PhD student or PostDoc and you discover something unexpected and cool outside your Research project, DO NOT share it with your Supervisor. Keep it for your self and built your own research line from there 😁.

  • @AntiheroYouth
    @AntiheroYouth Рік тому

    4:55 Not sure implying I’m going to disappear or my defects will disappear. Both are true, I guess.

  • @virtuallysarvad
    @virtuallysarvad Рік тому

    Such a good explanation. Sad that you'll stopped uploading :(

  • @brunolopes7311
    @brunolopes7311 Рік тому

    please....MORE!!! :) (im new here....)

  • @nguyenlephuong9489
    @nguyenlephuong9489 Рік тому

    could you teach us how to design a microfluidic chip using softwares such as autocad?

  • @Crasy24Hours
    @Crasy24Hours Рік тому

    💖valubal inform mam 💖

  • @MasterTicTac1
    @MasterTicTac1 Рік тому

    Great explanation of the basics of surface tension and some cool visuals! Good sci com guys! Looking forward to all the ways you use it in microfluidics!

  • @thirandieamaratunga7278
    @thirandieamaratunga7278 Рік тому

    Wonderful work! Helps understand a complex concept in a simple, intriguing way.

  • @sillittig
    @sillittig 2 роки тому

    beautiful and amazing , frantic

  • @gegedepardi3486
    @gegedepardi3486 2 роки тому

    C'est une approche très théorique et universitaire des cristaux liquides, un petit show des différentes interfaces des années 60, utilisant les cristaux liquides aurais apporté une petite approche ingénieur au sujet. Surtout que niveau ingé lcd avant le pixel c'est très "cru" très visuel comme technologie. C'est plus simple que nos lcd d'aujourd'hui on peu les décortiquer et apprendre comment l'ingénieur à adapter les cristaux liquides sans notre tendance à miniaturiser. Je critique parceque la vidéo est quasiment parfaite c'est incroyable. Trop trop fort la qualité, la maîtrise du sujet, tout est carré. C'est vraiment de la vidéo de qualité félicitations !

  • @plumnuts
    @plumnuts 2 роки тому

    absolutely incredible how much i learned from this low-key video. everybody should see this. i'm talking core curriculum.

  • @NilanjanMondalbluemotions
    @NilanjanMondalbluemotions 2 роки тому

    amazing to watch

  • @yaghiziad1034
    @yaghiziad1034 2 роки тому

    How do we get 256 different shades of color on a subpixel ? Does the liquid crystal change the intensity of the light that passes through aswell ?

  • @sollinw
    @sollinw 2 роки тому

    <3

  • @christianprice4049
    @christianprice4049 2 роки тому

    Amazing!

  • @MrDieselakias
    @MrDieselakias 2 роки тому

    if we increase the flow rate in a microfluidic channel, wont we get a turbulent flow at some point?

  • @zgjimmustafa6572
    @zgjimmustafa6572 2 роки тому

    Can you recommend a Programm for the Design of This chip?