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Compact holographic sound fields enable rapid one-step assembly of matter in 3D

science.org

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Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#61

Post by upwardbound »

nomel wrote: post #32
shadowgovt wrote: post #12

This 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=3MXVSdXZzpc , and https://www.youtube.com/watch?v=tzWP-NL3Lck Controlling the motion involves a lot of prediction and wave modeling, whi…

Here's a kit you can buy, for a single point version: https://a.co/d/bZVnuOS

Neat! The paper slightly reminds me of imagining what would happen if you tossed a big handful of dry sand into the path of the ultrasound in the product you linked.

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#62

Post by bburrito »

RangerScience wrote: post #23
calebio wrote: post #21

This 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". T…

There 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.

Pretty sure that is the Electric Lazy Lounge

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#63

Post by Roverlord »

inanutshellus wrote: post #9

Tea. Earl Grey. Hot.

"I'm sorry, but I am an AI language model and do not have the ability to make or serve tea. Is there anything else I can assist you with?"

But since it gives different results for different people, has anyone actually received a cup of tea?

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#64

Post by julius »

So 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?

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#67

Post by 6510 »

cwkoss wrote: post #18
inanutshellus wrote: post #9

Tea. Earl Grey. Hot.

It 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 enoug…

My theory is that hot and earl gray require specific instruction every time because they are dangerous and disgusting. It should never serve earl gray by default no matter how often it is ordered.

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#68

Post by nbpname »

Interesting!

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-...

Re: Compact holographic sound fields enable rapid one-step assembly of matter in 3D

#70

Post by taneq »

upwardbound wrote: post #61
nomel wrote: post #32

Earlier quoted context omitted.

Here's a kit you can buy, for a single point version: https://a.co/d/bZVnuOS

Neat! The paper slightly reminds me of imagining what would happen if you tossed a big handful of dry sand into the path of the ultrasound in the product you linked.

I’d guess you’d be politely but firmly asked to leave the lab. :P
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