This section uses the PZT--5H piezoelectric ceramic material that has been polarized, using the filling method to PZT The material is cut into a piezoelectric ceramic of its polarization direction, and the cross-sectional area is square, and the column width is 36.03 um.The piezoelectric ceramic pil

In this section, two kinds of piezoelectric ceramics composite materials with a center frequency of around 50 MHz are prepared to prepare two kinds of poly. Focused ultrasonic transducers in the form of a focal point are spherical focus and cylindrical line focus, respectively. The schematic diagram

Researching on acoustic transducer layer materials began in the 1980s. In 1998, Kim Yeonbo and Roh Yongrae uses the method of time domain analysis to theoretically give a suitable for broadband, it is high energy ultrasound structure of the energy device and the best acoustic impedance matching valu

The prepared l-3 type piezoelectric ceramics composite was tested using the Agllent E499lA RF impedance/material analyzer manufactured by Agilent. Compared to traditional network analyzers, the frequency impedance/material analyzer has a wide measurement range. The measurable frequency range is from

Since the its density of general piezoelectric material piezoelectric ceramics is often much higher than that of the non-piezoelectric phase (usually Polymer) the density of the material, so when the volume fraction of the piezoelectric phase increases, the density of the composite tends to the volu

In the practical applications, the piezoelectric materials piezo ceramic transducer needs to have a high electromechanical cohesion coefficient Kt to effectively convert electrical energy and mechanical energy each other, at the same time, it is necessary to expand the dielectric coefficient as high

Ultrasonic transducers, what kind of pulses do they need to generate or obtain ultrasound? How to confirm the resonance frequency ?About ultrasonic transducer, the pulse required is a high-frequency pulse signal, and is determined by its driving frequency. As for the resonant frequency of the trans

What’s the common method for measuring the speed of ultrasonic transducers?Among the method about measuring speed of Ultrasonic distance measuring transducer, a resonance method is commonly used, transducers emit similar sound wave of plane wave and then reflected and superimposed by the sound wave

Main applications of high frequency high intensity focused ultrasound at home and abroad. With the development of transducer materials and mechanical fabrication techniques, the frequency of ultrasonic transducers is now increasing. In general, higher frequency sound waves can resolve finer biologic

In the 1970s, scientists use piezoelectric ceramic materials(PZT) and non-piezoelectric materials (polymers compound) according to a certain arrangement, thereby forming a combination of piezoelectric materials and non-piezoelectric materials.Piezoelectric composites have their own shortcomings, for

Since 1880, French physicists P. Curie and J. Curie have discovered the Piezoelectric effect piezo element.The current piezoelectric effect materials can be roughly divided into three categories,it is piezoelectric single crystals, including ferroelectric Piezoelectric discs transducer,non-ferroelec

The ultrasonic transducer is a sound pressure-electrical conversion device that can convert the surface acoustic energy and electrical energy.Since 1917, the French scientist Paul Langevin discovered the inverse piezoelectric effect, it is using quartz crystals as piezoelectric materials.The first p

The propagation of vibration sensor in the medium is referred to as wave. There are two conditions for generating wave: vibration (generated by the wave source) and propagation (need to propagate the medium). According to the generation of fluctuations, it can be divided into mechanical waves and el

Importance of medical ultrasond transducer shown in the whole ultrasonic imaging system,which can directly affect the image performance of the ultrasonic imaging system.As the development of piezoelectric materials,the improvement of production process and computer,the frequency of ultrasonic diagno