8 ms·
Compact holographic sound fields enable rapid one-step assembly of matter in 3D
- motohagiography 4y agoWould this also work by using the accoustic field on the material that instead of air, was suspended in a liquid? It seems like it's using the relative densities of the materials anyway, so whether it's sound through air or another medium seems equivalent.
- fermuch 4y agoFigure 6 shows the method with gel particles. If I'm interpreting it right, it's suspended on a liquid (I most likely am wrong).
- triptych 4y agoOne step closer to transporter technology
- sdesalas 4y agoOne step closer to hologram technology... "Help me Obi-wan you're our only hope."
- dr_dshiv 4y agoThis is cymatics!
- AceJohnny2 4y agoWell I just found the name of my new sci-fi technology.
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- inanutshellus 4y agoTea. Earl Grey. Hot.
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- mkaic 4y agoObligatory https://xkcd.com/2570/ https://xkcd.com/2570/
- inanutshellus 4y agoThere really is an xkcd for everything!
- cwkoss 4y agoIt occurred to me last week that phrase is prompt engineering. He is giving the essential info to specify what he wants presumably because a shorter specification would yield a different result. I wonder if star trek replicators are deterministic. Does Picards frequent ordering of Tea Early Grey Hot make the probability of someone ordering "tea" more likely to be TEGH, and thus if Picard ordered TEGH frequently enough he would eventually be able to just say "tea"? Do replicators do continuous training or is the prompt inference engine static?
- yazaddaruvala 4y ago> I wonder if star trek replicators are deterministic. It seems like it would be deterministic (or similarly consistent to your fav cafe), or else Picard would no longer trust his prompt and try new ones (no different than you would try new local cafes instead). What isn't clear is if "Tea. Earl Grey. Hot." is the same as "Hot earl grey tea, please."
- martyvis 4y agoIt isn't different. It's just that the implication is that you need to talk to the replicator tersely rather than conversationally
- haupt 4y agoNobody tell Ted Faro.
- shadowgovt 4y agoThis is one of those cool ideas that is much easier to grasp with some animated visuals. I haven't found one for this specific application, but adjacent work in using sound to move small objects is seen at https://www.youtube.com/watch?v=XpNbyfxxkWE https://www.youtube.com/watch?v=XpNbyfxxkWE , https://www.youtube.com/watch?v=3MXVSdXZzpc https://www.youtube.com/watch?v=3MXVSdXZzpc , and https://www.youtube.com/watch?v=tzWP-NL3Lck https://www.youtube.com/watch?v=tzWP-NL3Lck Controlling the motion involves a lot of prediction and wave modeling, which should be a perfect application for high-performance computing.
- rsingla 4y agoIn the Supplementary Materials, there's a set of example videos of this work in action. In particular, the helix shape is pretty cool to see form in (essentially) the blink of an eye.
- xixixao 4y agohttps://www.science.org/doi/suppl/10.1126/sciadv.adf6182/suppl_file/sciadv.adf6182_movies_s1_to_s3.zip https://www.science.org/doi/suppl/10.1126/sciadv.adf6182/sup...
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- achalkley 4y agoReminds me of Kryptonian tech in Man of Steel
- aetherspawn 4y agoThis is exactly what this reminded me of. I can forsee high fidelity solid, textured holograms just being some kind of colour changing liquid that's controlled with sound waves. Perhaps 100 years into the future we will have dynamic furniture at a whim in our houses through some kind of similar technology .. or be able to materialize dynamic cooking pots exactly suitable for each dish, and then de materialize them afterwards (skip cleaning!), rather than store 20-odd differently sized pots.
- tanepiper 4y agoCool, Sonic Screwdrivers
- rdevsrex 4y agoOne more step on the road to programmable matter.
- calebio 4y agoThis kinda reminds me of Terence McKenna talking about his experience with DMT. He met "self-replicating machine elves". One of them told him, "don't be stuck in shock/wonder", and "do what we're doing". Then he noticed that these 'beings' were creating various 'physical' objects in front of him with sound. Like they were "singing" these objects into existence. He called it, "glossolalia", or "speaking in tongues". Through his DMT trips he apparently learned to use different sounds to create objects in front of him. Slight changes in the sound changed the appearance of the object. Not that I necessarily believe him, but it peaks my imagination in fun ways.
- RangerScience 4y agoThere was an art piece (at Burning Man, where else haha) that replicated this to some degree - simply a chill couch/bed thing that'd comfortably fit about five, with headset microphones and a projector, which'd visualize the sound. And... however they put it together, it was magic. You really did feel like you were singing shapes into existence with your friends.
- iseanstevens 4y agoOoh Fascinating! I definitely did not see that one! Any recollection about which year/camp/approximate location on playa/name of project/pics or similar?
- RangerScience 4y agoOh jeez. I think that was 2013, and I think outer playa, but not deep playa - past the temple where things get calmer and more isolated, but not way the fuck out there. I have no idea of the names involved :/ I might be able to recover it, as I think it was by some friends of friends.
- bburrito 4y agoPretty sure that is the Electric Lazy Lounge
- jakedub4d2 4y agoAll this math. Thank God for science.
- polishdude20 4y agoI can imagine this being used with some form of acoustically hardening resin. Put it in a container where the walls are ultrasonic transducers and then make the wave interact in such a way as to create acoustic hotspots that harden the material
- space_fountain 4y agoI've thought this would be cool to with radio heating. The wavelengths are smaller so you should be able to get better accuracy
- zan2434 4y agoI don't think that's even necessary! You could use this acoustic technique to shape ordinary light-curing resin and then flash with UV light to harden it.
- loa_in_ 4y agoThis combined with zero gravity seems most promising
- p1esk 4y agoWhat do you mean? For VR?
- lanternfish 4y agoSpace
- javiramos 4y agoCan someone summarize the advance relative to the prior art? There is quite a bit of previous work in this space including PixieDust (siggraph 2014) [0]. [0] https://youtu.be/NLgD3EtxwdY https://youtu.be/NLgD3EtxwdY
- ororroro 4y agoThe use of ultrasound holograms rather than an array of transducers. https://www.nature.com/articles/nature19755 https://www.nature.com/articles/nature19755
- midjji 4y agoThis is a very cool idea, I hope it scales
- julius 4y agoSo they are using sound waves to form very exact force-fields in 3D. But when you throw matter in there, would that not interact and reflect all the waves in unpredictable ways, destroying the very exact force-field pattern they are trying to achieve?
- shkolarac 4y agoAnd now just do it with microwave and you have instant 3d printer :)
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- nbpname 4y agoInteresting! The current design seems to uses 3 transducers at 2.25 MHz with a static phase shifter added on top of the transducers. Then they capture floating / dropping particles which are moving past the design that they want to be printing. I am currently working on building a similar mechanism as a pet project, inspired by the SonicSurface[1], with the goal of having a dynamic hologram while not requiring a huge computer hidden in the back. [1] https://www.instructables.com/SonicSurface-Phased-array-for-Levitation-Mid-air-T/ https://www.instructables.com/SonicSurface-Phased-array-for-...
- DennisP 4y agoDid everybody skip over the part about it working with biological cells? This seems like a big step towards printing organs.