Physics of Fluids Group University of Twente - 2014-10-13
The energy deposition in a liquid drop on a nanosecond time scale by impact of a laser pulse can induce various reactions, such as vaporization or plasma generation. The response of the drop can be extremely violent: The drop gets strongly deformed and propelled forward at several m/s, and subsequently breaks up or even explodes. These effects are used in a controlled manner during the generation of extreme ultraviolet (EUV) light in nanolithography machines for the fabrication of leading-edge semiconductor microchips. Detailed understanding of the fundamentals of this process is of key importance in order to advance the latest lithography machines. In this video we show the impact of a focused laser pulse onto a millimeter-size drop in a regime comparable to what can be found in lithography machines. The drop’s life was recorded for various impact conditions by high-speed imaging at 20 000 frames per second (FPS). The high reproducibility of the dynamics allowed us to use stroboscopic illumination with nanosecond exposure times leading to an effective frame rate of 10 million FPS. We present a scaling law and compare experimental results to numerical simulations, in order to show how the drop is propelled and deformed. Authors: Alexander L. Klein, Wilco Bouwhuis, Claas Willem Visser, Henri Lhuissier, Chao Sun, Jacco H. Snoeijer, Emmanuel Villermaux, Detlef Lohse, and Hanneke Gelderblom More info: http://arxiv.org/abs/1512.02415 http://arxiv.org/abs/1604.00214 Or just visit our website: http://pof.tnw.utwente.nl
I am providing informative feedback by being one of many dozens of people to obsessively post that XKCD linked here. The world is a better place for it. This may be sarcasm.
xkcd sent me there
Same
Looks like art for an indie platformer.
1:20 Water Jellyfish!
Such a cool video. Thank you xkcd for always referring me to cool stuff. Maybe we can re-purpose that water vaporizing laser for other mad science ideas someday. :D
-What if we tried more power?
-Not this again...
Thank you for this, XKCD!
I don't know what any of this means but it's so well-made and beautiful that I had to keep watching. 10/10
Oh Randall Munroe, how we love you so
This is very sweet science. Excellent presentation as well.
1:00 inky ghost horsey!
Wow, awesome experiment and a beautiful video - thanks!
that was nice :)
The 10^7 looks like a it would have been mid 90's music video
Plasma! Who'da thunk it. Amazing!
Beautiful!
Hello from xkcd!
Props to whoever edited this! Done very well.
I now want to make a laser/droplet based propulsion system. :D
@PoF Twente, could you tell the name of the song?
Incredible work! Thanks for sharing!
How did you make the drop a perfect sphere?
wow! what an interesting and beautiful video it explains it scientifuically but is so smooth and pretty its fascinating to watch!!
And suddenly: XKCD.
Hi! Nice video and experiments, just a partially OT question: which program have you used to make this presentation?
Thank you a lot!
@Luca Ferrantino Sure, no problem: Main program for overlaying, cutting and arranging video clips: Adobe
Premiere Pro; Animations and Sketches: Apple Keynote; Processing of
experimental and numerical data as well as visualization: Matlab. So I
create the different clips in Keynote and Matlab and overlay everything
in Adobe Premiere Pro.
Very clear presentation of results, besides being very cool in general. Wish my fluid dynamics class in college was one tenth as interesting.
so PoF Twente gotted their palsma laser, and blew up the droplet
I'm XKCD's cult following..
Sweet indeed!
What is this video about exactly?
Pretty cool Indeed.
This is a thing of beauty.
xkcd ftw!
How could people thumb down on this? It's awesome!
Pew, pew, pew!
Solid!.......I mean fluid........
What a wonderful video.
cool
like if you're here from xkcd
Quite interesting. What are the possible applications for these experiments?
I can't believe the Death Star just makes a lil explosion when lasers can make stuff like this happen!
Very cool.
Can someone explain the significance of this?
she got 1000+ new followers on her instagram... but for that she uses instaphamousDOTcom
Why do we see the laser pulse on the left immediately before it hits the droplet? Is it doing something to the air as it passes through, or to impurities in the air?
It would have been neat if this was also done using femtosecond lasers in addition to nanosecond lasers. I would anticipate very different results due to the lack of time for heat to be conducted away from the surface of the droplet during the pulse duration.
Cansionemes norteñas
Hi,
Sorry in advance if it's indicated and I didn't find it after a rather rapid search, but could you tell me what tools you used to make this great presentation?
Thanks!
fake.... and a waste of time
Aaron Reichert - 2014-11-14
XKCD brings me to the most interesting of places!
brick house - 2016-07-20
yep
zhaoyj2000 - 2019-03-23
Just imagine that ink droplet as your neighbor's house if the laser umbrella doesn't work too well.