... i have some ten of the first
'piezolegs' and built 2D- and 3D-stages with them.
The simple drivers have only step-propagation, where one single step is around 150 nanometers and varies with load, so you need feedback for better accuracy and precision.
With 'bending' drivers you can move the bars with the same accuracy as with common piezo-stages, what's in the sub-nm range - but here too you need a measuring system for feedback, what's defining the price of the stages ...
Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [
reprap.org] -- Deutsche Facebook-Gruppe - [
www.facebook.com]
Call for the project "garbage-free seas" - [
reprap.org]
