The polarization direction and vibration direction of the piezoelectric ceramics are along the thickness direction. Therefore, the input and output part of the piezoelectric ceramic resonator of the thickness vibration mode piezoelectric ceramics are longitudinal vibration modes, and the thickness

Piezoelectric ceramics discs oscillators resonate from both a mechanical point of view and an electrical point of view, and have a series of resonant frequencies. We refer to the first occurrence of the resonant frequency at the low frequency end as the fundamental frequency (referred to as the fund

If two thick PZT5 material piezo disks sheets having the same thickness and polarized electrodes are bonded together, when an externally applied exciting electric field can elongate one of the sheets and the other piece is shortened, bending vibration can be generated. For the sheets bonded in the o

Piezoelectric ceramic vibrators have a wide range of applications. Piezoelectric ceramic transformers and piezoelectric ceramic filters are processed or combined by piezoelectric vibrators in a certain way. The parameters of the piezoelectric ceramics transducer depends largely on the vibration of t

A piezoelectric ceramic is a resonant body, and when it is used as a piezoelectric element, it is called a piezoelectric vibrator or a piezoelectric ceramic vibrator. With the resonance characteristics, many devices can be fabricated, such as filters, piezoelectric ceramic transformers, and so on.P

Piezoelectric ceramics can produce electrostrictive effects under the action of alternating electric field. Piezoelectric ceramic ultrasonic transducers can generate vibration under the action of alternating electric field, and can generate strong ultrasonic waves during resonance. Since piezoelectr

The performance indicators describing the transducer are operating frequency, electroacoustic efficiency, and transmitted sound power. The performance of the HIFU ceramic transducers is described below, and the performance of the four in vitro focused transducers is described separately. (1) Operati

High intensity focused ultrasound HIFU is an emerging in vitro non-invasive treatment of tumor technology. The physical principle of treatment is: through a certain form of ultrasound focusing transducer, the ultrasound energy is focused on the target tissue, and the target tissue is rapidly heated

Experimental principleThis experiment utilizes the positive piezoelectric effect of piezoelectric ceramics. Using the piezoelectric ceramics installed in the guitar resonance box, the seven sounds from the center C to B (including B) in the C major scale are plucked by the player, and the electric s

This study utilized the principle of piezoelectric effect of piezoelectric ceramics and consisted of two parts of experiments. The first part is to use the positive piezoelectric effect of piezoelectric ceramics, install piezoelectric ceramic sheets in the resonance box of the guitar, and pluck the

A hydrophone is a transducer that converts an underwater sound pressure signal into an electrical signal. When the pressure (acoustic disturbance) on the piezoelectric material piezo ceramic tubes changes, the charge distribution inside the piezoelectric material changes proportionally and is reflec

The polarized PZT piezo ceramic becomes an ordered arrangement due to the polarization electric field forcing the disordered 90°domain and 180°domain steering in the unit cell, and the spontaneous polarization axis in the unit cell is longer than the non-spontaneous polarization axis. When the 90°do

The temperature of the lead oxide volatilization hydrothermally synthesized PZT piezo ceramicpowder is 944.71°C, and the reaction temperature between the particles is 811.26° C; the reaction temperature between the solid phase synthetic PZT powder particles is 1243.47 ° C, and the volatilization tem

The first is the separation of nucleation and growth process,which is promoting nucleation and controlling growth,to ensure that the nucleation rate is greater than the growth rate, that is, ensuring that the PZT materials piezo ceramic powder precursor is formed under a large degree of supercooling