Piezoelectric ceramic tube

Working method and principle

Piezoelectric ceramic tubes with relatively thin wall thickness, radial polarization, four electrodes on the outer wall, and integrated or partitioned electrodes on the inner wall. When a positive voltage is applied to a certain area from the outside, the ceramic tube shrinks in the vertical direction, causing the top of the ceramic tube to compare Large tilt and simultaneous application of voltage will cause the ceramic to expand and contract axially or radially.

Piezoelectric ceramic tube scanner

It is a thin round tube of radially polarized piezoelectric material, with four external electrodes and continuous internal electrodes. When a voltage is applied to one of the external electrodes, the actuator tube wall in the corresponding area expands, which causes vertical contraction and large lateral deflection of the tube tip. Circumferential electrodes can be used for vertical or radial expansion and contraction. Piezoelectric tube scanners are widely used in applications such as scanning probe microscopes, fiber stretching, and beam scanning. Custom sizes and specifications can be provided according to requirements.

Connection line

Conductive epoxy or standard solder and rosin flux can be used to connect the leads. After applying the flux, it is recommended to contact the iron at 300°C for one second.

Piezo tubes can also provide connecting wires.

Install

The common installation configuration is a cantilever type with a fixed base and a free end. The substrate can be directly bonded to the insulating surface with two-part epoxy or high-viscosity cyanoacrylate. Piezotubes can also be bonded to conductive surfaces by removing a small amount of electrodes, as described in “Electrodes” below.

electrode

Piezoelectric ceramic tubes are equipped with nickel film electrodes. The inner electrode is continuous, and the outer electrode is four-partitioned. The surface electrode can be removed by etching with dilute nitric acid. Customized electrode configuration can be provided upon request.

In applications requiring high magnetic fields, nickel electrodes can be replaced with copper or gold. Copper is an economical choice, but Jindian has excellent corrosion resistance and electrical conductivity.