Razor-thin silk 'dampens noise by 75%' — could be game-changer for sound-proofing homes and offices


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The fabric contains a "piezoelectric" material woven through the silk that produces an electrical signal when the material is deformed — with the fibers reacting to movements as small as the vibrations caused by sound waves.

 

Razor-thin silk 'dampens noise by 75%' — could be game-changer for sound-proofing homes and offices
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It can also be a game changer when it comes to covert surveillance. Imagine what you could hear if you turned it into a microphone.

 

Razor-thin silk 'dampens noise by 75%' — could be game-changer for sound-proofing homes and offices
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'Sounds' like it's very frequency selective and I'm leary of any article published on April 1.

https://onlinelibrary.wiley.com/doi/10.1002/adma.202313328
Single Layer Silk and Cotton Woven Fabrics for Acoustic Emission and Active Sound Suppression
Grace H. Yang, Jinuan Lin, Henry Cheung, Guanchun Rui, Yongyi Zhao, Latika Balachander, Taigyu Joo, Hyunhee Lee, Zachary P. Smith, Lei Zhu, Chu Ma, Yoel Fink
First published: 01 April 2024 https://doi.org/10.1002/adma.202313328

The vibration-mediated suppression is enabled by the vibrational modes on the fabric excited by the fiber matching with those excited by the external sound source. At the right relative phase, when the external sound wave impacts the fabric, the energy is not imparted to it, and the sound wave is reflected back. In order to suppress multifrequency sound waves originating from multiple sources, advanced signal processing and the development of complex control algorithms will be needed for the applications of both direct acoustic suppression and vibration-mediated suppression to be feasible in real-world scenarios. There is opportunity to face this challenge by using the additional degrees of freedom that the fabric emitter system offers, as multiple fibers and fabrics of various sizes and orientations could be used in a single system to suppress more complex sound.

Sounds like the usual: It works in the lab under artificial conditions but will not be practical for real-world applications.

 

and I'm leary of any article published on April 1.

Totally missed that.

 

Published "Yesterday"? Am I in a time warp? Still haven't found anywhere that it might suggest this was published 4/1.

 

Published "Yesterday"? Am I in a time warp? Still haven't found anywhere that it might suggest this was published 4/1.

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The actual paper that article is about, always go to the source if possible for a evaluation of pop-sci articles: https://onlinelibrary.wiley.com/doi/10.1002/adma.202313328
Single Layer Silk and Cotton Woven Fabrics for Acoustic Emission and Active Sound Suppression
Grace H. Yang, Jinuan Lin, Henry Cheung, Guanchun Rui, Yongyi Zhao, Latika Balachander, Taigyu Joo, Hyunhee Lee, Zachary P. Smith, Lei Zhu, Chu Ma, Yoel Fink
First published: 01 April 2024

It looks fine at first glance as a serious paper but I did lookup "Zachary P. Smith".

 

Never give up. Never surrender.

 

Never give up. Never surrender.

Wow! ... was that real?

 

 

Wow! ... was that real?

I don't know. But it looks real to me.

 

 

Visited Puttshack in Scottsdale this weekend, was good fun. The golf balls are somehow tracked and the system can count each player's score and number of hits all automatically, was quite impressed.

Puttshack.

 

 

https://www.youtube.com/live/2Q-t6XiO-PU?si=HIwWvNVG4MPf1g63

A talk about the 8 Second Juneteenth Rodeo

 

Volkspod: Mini motorbike fashioned from old VW Beetle fender


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Along with the fender, the machine features a custom-built frame, 79cc petrol engine, diddy 13 x 6-inch tyres, headlight, taillight, handlebars and seat.

 

MIT spinoff’s superconducting cables promise 10x power, reduced footprint


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VEIR plans to launch its first large-scale pilot by 2026. It aims to serve utility companies, data centers, industrial sites, and renewable energy developers as key customers. The initial product line boasts impressive capabilities, with transmission capacities of up to 400 megawatts and voltages reaching 69 kilovolts.

 

MIT spinoff’s superconducting cables promise 10x power, reduced footprint
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Saw that elsewhere, they are raising money.

https://twitter.com/i/web/status/1772591570740515083

The total cost is a major consideration on how practical the system is and if the source generation power levels can utilized the added capacity.

Today VEIR’s system is passively cooled with nitrogen, which runs through a vacuum-insulated pipe that surrounds a superconducting cable. Heat exchange units are also used on some transmission towers.

 

Saw that elsewhere, they are raising money.

https://twitter.com/i/web/status/1772591570740515083

The total cost is a major consideration on how practical the system is and if the source generation power levels can utilized the added capacity.

Yeah, it seems like the real thing. I find the system's maintenance of concern too. I wonder how demanding it's going to be.

 

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I have watched quite a few videos of this school's band and it's been quite impressive!! I can say as a former "band geek" in school they take a lot of pride in what they do and put a lot of effort in to it. It's hard enough just walking and playing at the same time in some cases then you add in jumps, dancing, and everything else they do and it's something to see.