A slight noncircular shape in the holder aperture allows the mirror to be kinetically clamped. The mirror surface is normally placed toward the front of the aperture and located above a slotted mounting hole. Fine pitch screws are provided for mounting stability. 3 degree range. Thin wires allow for linear motion as well as bidirectional rotation.
Linear motion is achieved by applying the same scan pulses to each of the outer piezo tubes.
In rotation, the three outer piezo tubes each moves tangential to the microscope disk. See figure 2. To achieve surface scan, the microscope remains stationary on the sample ring. The bending of the outer piezo tubes moves the microscope disk back and forth. For motion in the x-y plane, an area of a few square millimeters can be covered, which depends on the width of the ramps and the size of the microscope.