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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Strings that can vibrate forever (almost)
Date: Sat, 25 May 2024 05:04:00 GMT
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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.