Can LIGHT pick stuff up and assemble it? -
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- Опубликовано: 11 сен 2024
- #VeritasiumContest
I am posting this video in response to a contest announced by Veritasium challenging educators to explain a counter intuitive concept in one minute or less (www.veritasium....
Since the prize money is coming from a UCLA professor who lost a physics bet to Derek from Veritasium, this is my attempt as a fellow UCLA professor to redeem my university’s reputation.
This video is about how laser beams, called optical tweezers, can be used to assemble tiny spheres within microgranular crystals of any packing tessellation. My group at UCLA built our own custom machine to build these crystals using purely automated algorithms. A Nobel prize was recently award to Arthur Ashkin for inventing the concept of optical tweezers and using them to manipulate DNA.
If you'd like to learn more about this topic, be sure to see this invited conference talk:
• Manufacturing Micro-gr...
My work pertaining to this topic is previously published in the following journal listed here:
-Chizari, S., Lim, M.P., Shaw, L.A., Austin, S.P., Hopkins, J.B., 2020, “Automated Optical-tweezers Assembly of Engineered Microgranular Crystals,” Small, 16(25): 2000314 (6 pages)
-Porter, M.D., Giera, B., Panas, R.M., Shaw, L.A., Shusteff, M., Hopkins, J.B., 2018, “Experimental Characterization and Modeling of Optical Tweezer Particle Handling Dynamics,” Applied Optics, 57(22): pp. 6565-6571
-Shaw, L.A., Chizari, S., Hopkins, J.B., 2018, “Improving the Throughput of Automated Holographic Optical Tweezers,” Applied Optics, 57(22): pp. 6396-6402
-Shaw, L.A., Panas, R.M., Spadaccini, C.M., Hopkins, J.B., 2017, “Scanning Holographic Optical Tweezers,” Optics Letters, 42(15): pp. 2862-2865
If you are interested in learning more about this work, check out my RUclips Channel, “The FACTs of Mechanical Design”
/ thefactsofmechanicalde...
Acknowledge: This work would not have been possible without the help of my students, Luke Shaw, Samira Chizari, Michael Porter, Miles Lim, and Amin Farzaneh! Also special thanks to Carlos Portela and Julia Greer for helping to make the mechanical testing video.
Donate to help support my channel:
If you’d like to make a one-time donation, you can use the following link:
PayPal.me/FACTsMechDesign
Thank you for your support! It is much appreciated and helps enable me to make more content.
Disclaimer: Responsibility for the content of this video is my own. The University of California, Los Angeles is not involved with this channel nor does it endorse its content.
So.... You're telling us you've invented some sort of tractor beam? That's legitimately one of the most impressive things I've ever seen!
What an excellent contribution to the field of mechanical engineering!!!
Question: Have you tried to use the spheres as intermediate manipulators for objects that can't be manipulated via the optical tweezers?
Woah. Incredible. Tell us more!
That was enjoyable and informative. I especially like the practical application application shown at the end.
A marvellously clear explanation of a property of light that is now being utilized to assemble spheres, and hopefully specific atoms and ions some day soon, into complex new structures.
00:30 so basically UFO technology very cool
So good! I need more of you!
Love this video. I am learning so much.
Holy moley - you're putting out a bunch of these 1 minute videos and doing a really nice job of them. I recall seeing something about this before. Perhaps that was you as well.
do you have an actual paper describing the process? i would love to read more about it
brilliant !!
Optical tweezers have been around for decades :)
It's very interesting.. Lets print a benchy with atoms !!!
It's the topic someone won nobel prize for
Amazing, I've never seen images of this that are so cool
Amazing.. I love science and music... let's grow together! All the best
Holy crap...
That is amazing!
min blowing, well done!
This reminds me of the Danger Room from X-Men
Holy crap this is impressive!!
This is so cool!
Ummm ok. Proof that you took a time machine from the future Professor Hopkins. Give it up where is it? I want to go for ride. Show me the future. So cool.
This is amazing!
That's actually crazy 😲
Wavelength of the lasers?
That's fascinating. How big of objects can it move?
😱
you said light produces a force? what kind of force is that? AFAIK from physics books, we have 4 main forces: 1)strong force 2)weak force 3) electromagnetic force, 4) gravitational force. So which force is it? It can't be electromagnetic because we don't have electric current, so ... is that some new fifth force?
No, its electromagnetic. Light is an oscillating electric and magnetic field that interacts with the electrons in matter to produce a momentum transfer.
Make 3D printer with it. Awesome.
there already is a ight 3D printer, but this tech is the reverse of that and much more interesting , look at 00:30 again and think aliens
Tractor beam!?
Yep!
If the moon gets hit with massive Snooker astroid, and is sent right at us for some 'game over' points?! This will be handy to save the Earth _ 💪🌐
And they say a God made of light can't make man from the dust of the Earth! Science disagrees!