Re: Strings that can vibrate forever (almost)

On a sunny day (Thu, 23 May 2024 11:04:02 +0200) it happened Jeroen Belleman
<jeroen@nospam.please> wrote in <v2n0m9$1m371$2@dont-email.me>:

On 5/23/24 07:08, Jan Panteltje wrote:

Strings that can vibrate forever (kind of)
   https://www.sciencedaily.com/releases/2024/05/240522130402.htm
Source:
  Delft University of Technology
Summary:
  Researchers have engineered string-like resonators capable of vibrating longer at ambient temperature
  than any previously known solid-state object -- approaching what is currently only achievable near absolute zero
  temperatures.
  Their study pushes the edge of nanotechnology and machine learning to make some of the world's most sensitive mechanical
  sensors.
 
Interesting for inertial navigation!
 
Mechanical 214 kHz resonator with a Q of 6.6 billion at room temperature
  see paper:
   https://www.nature.com/articles/s41467-024-48183-7
    figure 4
  

>
Interesting, indeed, but this looks *very* fragile!

Yes, but maybe not enough free space to move so much it breaks?

I just hope they used a Faraday cage and kept it away from other sources and their harmonics in the 214 kHz range.
Wallwarts! bats? some other piezo stuff.