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Do piezoelectric fans count as being solid state too, then? If so, this one wouldn't be the first.
by defanor 4y ago
Do piezoelectric fans count as being solid state too, then? If so, this one wouldn't be the first.
- weinzierl 4y ago"Do piezoelectric fans count as being solid state too, then?" Not in my book. The first thing that comes to my mind when I hear "solid-state" and "cooling" in a sentence is "peltier element". The name "AirJet" gave it already away though, that this is likely something different.
- defanor 4y ago> The name "AirJet" gave it already away though, that this is likely something different. They mention that those are MEMS membranes in the presentation [1]. But it also sounds like Airjet developers (or marketers) count MEMS membranes as solid-state, and piezoelectric fans as not, while I wonder where the line is. [1] https://youtu.be/YGxTnGEAx3E?t=146 https://youtu.be/YGxTnGEAx3E?t=146
- weinzierl 4y ago> "They mention that those are MEMS membranes in the presentation [1]." This video was really insightful, thanks. Especially interesting was, that they use an effect called jet impingement that is also used in jet engines. > "But it also sounds like Airjet developers (or marketers) count MEMS membranes as solid-state, and piezoelectric fans as not, while I wonder where the line is." I think I can imagine where this distinction comes from. MEMS devices can usually be manufactured in facilities and with materials and processes very similar to those used for producing semiconductor chips like processors. Piezoelectric elements, on the other hand, require special materials and their production doesn't fit very well into the common semiconductor manufacturing process. Now, the step to call everything traditional semiconductor industry related "solid-state" is not that big.