Cylindrical attraction
This experiment measures the Casimir force between two gold-coated cylinders positioned at right angles to one another.
The upper cylinder can be lowered using the piezoelectric tube, which changes shape when a voltage is applied. The lower cylinder is mounted on a piezoelectric deflection sensor (known as a bimorph spring) that generates a charge when it is bent. When the two cylinders are close together, the Casimir force causes the lower cylinder to be attracted to the upper one, thereby deflecting the spring in the process.
The linearly variable displacement transducer (LVDT) monitors the nonlinear expansion of the piezotube.