On 6/20/13 4:57 PM, Gary wrote:
A common scheme in metal deposition measurement is to measure the frequency of
a crystal prior to starting the deposition process, then monitoring the
frequency shift of the crystal as the metal is sputtered.
I was told crystals are tuned this way at the factory, but don't know this for
a fact.
it's also how particle counters based on "piezobalance" work. The
particles hit the crystal and stick, lowering its frequency.
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