Research Progress of Capacitive Ultrasonic Transducers in the Medical Field 2

2、 Research progress of capacitive ultrasound transducers in the medical field

1. Material research: The performance of capacitive ultrasonic transducers is closely related to the piezoelectric materials used. At present, commonly used piezoelectric materials include zinc lead-acid, PZT (lead niobate zirconate titanate), and PZT-5H (composite material of lead niobate zirconate titanate and barium niobate). Researchers improve the performance of transducers by altering the composition and structure of piezoelectric materials, such as increasing sensitivity and frequency response.  diode

2. Structural optimization: The structure of capacitive ultrasonic transducers also has a significant impact on their performance. Researchers improve the sensitivity and resolution of transducers by optimizing their structure, such as changing the electrode shape, adjusting the thickness and shape of piezoelectric materials, etc.

3. Frequency modulation technology: In order to achieve better imaging results, researchers have developed frequency modulation technology. This technology can adapt to different imaging depths and resolution requirements by changing the operating frequency of capacitive ultrasound transducers.

4. Multivariate array technology: In order to improve the speed and quality of imaging, researchers have proposed multivariate array technology. This technology arranges multiple capacitive ultrasound transducers in an array, which can simultaneously emit and receive ultrasound waves, thereby improving the resolution and speed of imaging.  diode