4 ms·

That gets to be a nitpicking distinction when you get to the level of micron moving parts. If a practical definition of solid state is that something can surv

That gets to be a nitpicking distinction when you get to the level of micron moving parts. If a practical definition of solid state is that something can survive, say, 20G of abuse, then an accelerometer in silicon, even with moving parts, is pretty indistinguishable from true "solid state".

boxfire 6y ago
Solid state as a term is a discipline of materials, practically speaking it's a bad idea to overload it with your imprecise generalization. Solid state as mentioned above specifically refers to a lack of moving parts (even at a micron level). In this space without multibody dynamics some wave properties are determinable in a much more deterministic sense.
- krastanov 6y ago
  Your semantic prescription does not seem to be the common semantic prescription in electrical engineering. MEMS seems to be typically called solid state for the reasons mentioned by OP. Example in practice (second paragraph): https://www.analog.com/en/technical-articles/mems-accelerometers-for-condition-monitoring.html# https://www.analog.com/en/technical-articles/mems-accelerome...
- Reelin 6y ago
  Quartz crystal oscillators make use of the piezoelectric effect. Do they not qualify as solid state? For that matter, capacitor whine is due to electrically induced mechanical vibration as well; I've never heard anyone claim they don't qualify as solid state components though. To me, moving parts generally refers to physically coupled but distinct pieces that move relative to one another. Otherwise heating anything that contained a piece of metal by a few degrees would disqualify it.
  - xxs 6y ago
    Electrolyte caps are not solid state and they leak - likely the most common electronic failure. I have not heard of ceramic or polypropylene caps whine. OTOH coils are solid state and they are a lot more common to cause 'whine' than any type of capacitors.

boxfire 6y ago

Solid state as a term is a discipline of materials, practically speaking it's a bad idea to overload it with your imprecise generalization. Solid state as mentioned above specifically refers to a lack of moving parts (even at a micron level). In this space without multibody dynamics some wave properties are determinable in a much more deterministic sense.

krastanov 6y ago
Your semantic prescription does not seem to be the common semantic prescription in electrical engineering. MEMS seems to be typically called solid state for the reasons mentioned by OP. Example in practice (second paragraph): https://www.analog.com/en/technical-articles/mems-accelerometers-for-condition-monitoring.html# https://www.analog.com/en/technical-articles/mems-accelerome...
Reelin 6y ago
Quartz crystal oscillators make use of the piezoelectric effect. Do they not qualify as solid state? For that matter, capacitor whine is due to electrically induced mechanical vibration as well; I've never heard anyone claim they don't qualify as solid state components though. To me, moving parts generally refers to physically coupled but distinct pieces that move relative to one another. Otherwise heating anything that contained a piece of metal by a few degrees would disqualify it.
- xxs 6y ago
  Electrolyte caps are not solid state and they leak - likely the most common electronic failure. I have not heard of ceramic or polypropylene caps whine. OTOH coils are solid state and they are a lot more common to cause 'whine' than any type of capacitors.