PIEZO INTEGRATE

The continuously optimized formulation design enables us to produce porous piezoelectric ceramics with fine and uniformly distributed pores. These materials are suitable for MHz-band applications that were previously difficult to achieve.
In the MHz range, ultrasonic transducers are commonly used in scenarios such as medical imaging, probes, and underwater detection.
Due to the presence of pores, porous piezoelectric ceramics exhibit significantly reduced acoustic impedance, which allows better matching with low-impedance materials such as water, biological tissue, and polymers. This reduces acoustic reflection, enhances energy transmission efficiency, and enables high-frequency applications that were previously challenging to couple.
At high frequencies, piezoelectric elements often suffer from lateral mode interference, resulting in spectral impurities or blurred signals. The porous structure helps absorb part of the lateral mode energy, effectively acting as a natural mechanical filter that improves the purity of the main vibration mode and enhances frequency response.
When used in composite structures (e.g., 1-3 piezoelectric composites), porous ceramics provide improved overall strength and easier machinability, while retaining high-frequency responsiveness and excellent beam control. Such configurations have proven superior to conventional bulk ceramics, particularly in high-frequency medical ultrasound probes (20–40 MHz).
Flexible electrical properties
The piezoelectric constants and acoustic impedance can be tuned by adjusting the porosity.
Low mechanical Q factor, with dh exceeding 200 at 30 MPa.
The low mechanical Q factor enables wide bandwidth and short-pulse outputs, contributing to high axial resolution.