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Ultrasound Enables Remote 3-D Printing – Even in the Human Body
- _Microft 3y agoHere's a link to the paper [0]. It contains photos of printed objects shaped like letters, honeycombs, gears and other things. Maybe they should have included some of images in the reporting. [0] "Direct Sound Printing", https://www.nature.com/articles/s41467-022-29395-1 https://www.nature.com/articles/s41467-022-29395-1 (Open Access)
- jzemeocala 3y agoIm totally making me a sonic screwdriver.
- readthenotes1 3y agoIt's got me thinking of sonic blood clots in the pulmonary arteries but you do you and I'll worry about our ever increasing abilities to kill ourselves!
- omeid2 3y agoYou're being down-voted but both KGB and CIA have used similar tools already. Essentially, "remote poisoning guns". See page 6. https://www.cia.gov/readingroom/docs/CIA-RDP78T03194A000400010014-6.pdf https://www.cia.gov/readingroom/docs/CIA-RDP78T03194A0004000...
- fbdab103 3y agoGiven the relative infrequency with which high level leaders die in office, it does feel like these assassination tools are more James Bond than real world. Seems more straight-forward to arrange a car accident.
- BobaFloutist 3y agoSeems more straight-forward to arrange a car accident. Or just shoot someone.
- 082349872349872 3y ago<tinfoil> like Seymour Cray? </tinfoil>
- imchillyb 3y agoThe Mossad used small -targeted- explosives and motorcycles. They rode by a vehicle, attached the explosive, rode off and detonated. They’ve targeted and dispatched several nuclear scientists from Iran with this trick. Still a bit like a Bond plot.
- fbdab103 3y agoNow that seems needlessly elaborate. I am willing to imagine some amount of implausible hi-jinks occur when you are trying to make a death look like an accident. A car chase plus explosion does nothing to conceal the plot. Why not gun them down when they entered the car?
- jxramos 3y agovery interesting; I'm a bit stymied by this statement: "The effect of the poisonous vapors is such that the arteries which feed blood to the brain become paralyzed almost immediately." What in the world does it mean to have arteries become paralyzed? I thought paralysis was a skeletal muscle phenomenon. Arteries have a bit of smooth muscle for vasodilation and vasoconstriction. But what does paralysis mean here? I would think dilation, which would be the inactive state since constriction would require active energy exertion to effect.
- Jeff_Brown 3y agoIf we can build stuff with sound, it seems like taking blood clots apart with sound should be even easier. I wonder how long before people who take warfarin can stop taking it and instead subject themselves to a continuous scan that triggers clot destroying targeted sounds whenever it finds a clot. I suppose the continuous scan would be bad for you.
- derekmhewitt 3y agoThis is such a neat discovery, I'm having fun just thinking about all the amazing things you could do with this. Imagine in many years being able to inject, or deposit in some more elegant way, ceramic (or other abrasion resistant) medium into a worn bone joint and print it as cartilage tissue replacement.
- fnordpiglet 3y agoI’m not sure who is volunteering for the benchy calibration print, but god bless them.
- tommiegannert 3y ago> Complex geometries with zero to varying porosities and 280 μm feature size are printed by our method, > real printing is conducted with as low power as 20 W. The maximum streaming velocity is 20 mm/s for 210 W power, however, it is less than 3 mm/s for 20 W > The PDMS system used in this paper is Sylgard 184, which is a two component system. The elastomer and the curing agent contain vinyl-terminated siloxane and Si-H moieties, respectively. > Since we printed Sylgard-184 directly and purely without adding any toxic additives, the biocompatibility of the printed parts are expected. > The printed parts are washed with isopropanol alcohol (IPA) to remove the uncured materials (similar to SLA printed parts) from the surface of the printed parts. Then the parts are placed in a 40 °C oven for half an hour for drying the washed parts and complete the curing process. Cool tech. At 2.4 MHz, they're not joking calling it ultrasonic.
- emsign 3y agoMedical tricorders? It amazes me howmore and more Star Trek gadgets actually become real.
- czbond 3y agoUnrelated to the article: How is Scientific American as a 'source'? I'd like almost a "USA Today" of difficult topics. I'm quite interested in multi disciplinary science / engineering / bio innovations - but don't care to know the details.
- Filligree 3y agoI look forward to this becoming useful for hobbyists, once it falls out of patent in twenty years.
- shrubble 3y agoImagine being able to fix knee cartilage problems by 3D printing where the cartilage had worn away.