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[[Category: Equipment |Etch DRIE]]
[[Category: Equipment |Etch DRIE]]
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= Process optimization using the Picoscope =
= Process optimization using the Picoscope =
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Before going into details on why it makes sense to optimize the processes using the picoscope process monitoring, we need to have a look at how monitoring processes is usually done.
Before going into details on why it makes sense to optimize the processes using the picoscope process monitoring, we need to have a look at how monitoring processes is usually done.
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=== Process D4 ===
=== Process D4 ===


After a few years in its original configuration, we decided to upgrade Pegasus 1 with the [[Specific Process Knowledge/Etch/DRIE-Pegasus/showerheadchange|High flow plenum]] upgrade to improve the fast switching performance. As a result, the original recipe Process D was changed to Process D4 with faster cycles. The process parameters are listed in the table below.
After a few years in its original configuration, we decided to [[Specific Process Knowledge/Etch/DRIE-Pegasus/showerheadchange|'''upgrade Pegasus 1''']] to improve the fast switching performance. As a result, the original recipe Process D was changed to Process D4 with faster cycles. The process parameters are listed in the table below.


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: https://doi.org/10.1016/j.mee.2018.01.034
: https://doi.org/10.1016/j.mee.2018.01.034


; Bingdong Chang et al.: DREM2: a facile fabrication strategy for freestanding three dimensional silicon micro- and nanostructures by a modified Bosch etch process
; Bingdong Chang et al.: DREM2: A facile fabrication strategy for freestanding three dimensional silicon micro- and nanostructures by a modified Bosch etch process
:  2018 J. Micromech. Microeng. 28 105012
:  2018 J. Micromech. Microeng. 28 105012
: https://doi.org/10.1088/1361-6439/aad0c4
: https://doi.org/10.1088/1361-6439/aad0c4