Application Cases

In our previous article, we introduced experimental cases related to power amplifiers in fields such as ultrasonic non-destructive testing, ultrasonic atomization, and ultrasonic motors. In this issue, we will continue to provide an in-depth look at the applications of power amplifiers in ultrasonic processing, ultrasonic imaging, and other research areas.

Area 1: Ultrasonic Processing
Ultrasonic processing involves the application of ultrasonic energy to the surface or interior of materials, leveraging the mechanical vibration energy of ultrasonic waves to achieve processing objectives. In the manufacturing industry, it is commonly used for cutting, grinding, and polishing materials such as metals, ceramics, and glass.

Application of Power Amplifier in Ultrasonic-Assisted Punching of Polyurethane Microhole Arrays

This experiment aims to design an ultrasonic module compatible with an existing polyurethane microhole array punching device and conduct ultrasonic-assisted punching experiments. The goal is to summarize the optimizing effects of ultrasonic vibrations and verify their general optimization principles.

Application of Power Amplifier in Elliptical Ultrasonic-Assisted Mechanical Polishing

This experiment aims to achieve the effect of arranging four piezoelectric ceramic pieces side by side by segmenting electrodes on a large piece of piezoelectric ceramic. The electrode material is Ag, and the power amplifier drives the piezoelectric ceramic through a coating method applied to its surface. The piezoelectric ceramic and the 304 stainless steel substrate are bonded using epoxy resin adhesive to facilitate vibration transmission.

Application of Power Amplifier in the Processing of Flexible Electrodes Based on Piezoelectric Transducers

This experiment aims to use a high-voltage amplifier to amplify the driving voltage, enabling efficient mechanical vibration of the piezoelectric transducer. This achieves the goal of rolling graphite onto the surface of a flexible silicone film to form electrodes.

Area 2: Ultrasonic Imaging
Ultrasonic imaging is a non-invasive examination method that uses the propagation and reflection principles of ultrasonic waves to obtain images of internal structures in the human body. Power amplifiers can provide sufficient power output to ensure that ultrasonic waves penetrate tissues of varying densities and thicknesses, thereby acquiring clear images.

Application of Power Amplifier in Magnetoacoustic Imaging Using Ultrasonic Detection

To detect early-stage malignant tumors, this experiment proposes a magnetoacoustic imaging method based on low-frequency magnetic excitation and active ultrasonic detection. Color Doppler imaging technology is introduced to detect tissue vibrations induced by Lorentz forces. Active detection can utilize low-frequency signals as excitation, improving energy conversion efficiency.

Area 3: Ultrasonic Focusing
Ultrasonic focusing utilizes ultrasonic waves as an energy source, with multiple beams of ultrasonic waves emitted from outside the body and focused at a single point—typically a tumor—during propagation. Through the conversion of sound waves into thermal energy, a high-temperature treatment point of 70°C to 100°C is formed within 0.5 to 1 second.

The labeling agents used for cell magnetic labeling are mostly superparamagnetic iron oxide (SPIO) nanoparticles. Since both the cell membrane surface and the SPIO surface carry negative charges, they repel each other, making it difficult for cells to naturally uptake iron oxide particles. Dextran-coated ultrasmall superparamagnetic nanoparticles are currently the most widely used contrast agents for magnetic resonance imaging. When using larger dextran-coated SPIO particles for cell labeling, more Fe particles accumulate in the cytoplasm, resulting in better labeling efficiency.

This material has been compiled and published by Aigtek Electronics. For more cases and product details, please continue to follow us.