The piezoelectric ceramic shear sheet can provide transverse displacement, and the multiple shear sheets are bonded into a stack with epoxy resin and copper foil, which can provide greater transverse displacement. By superimposing shear stacks and Z-axis moving piezoelectric ceramics, XY/XZ/YZ/XYZ multi-axis moving stacks can be formed.
The piezoelectric ceramic shear stack consists of a plurality of discrete piezoelectric ceramic shear chips bonded by epoxy resin and copper foil. A single stack moves either positively or negatively along a single lateral axis by applying a positive or negative bias. A positioner that provides displacement along two transverse axes engages the upper plate of one piezoelectric ceramic shear stack with the lower end plate of the other.
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