Application Cases

Application of Power Amplifiers in Biomedical Testing Research

Biomedical testing involves using biological and engineering techniques to study and solve problems in life sciences, particularly in medicine. It is an important engineering field related to improving medical diagnostics and human health. Power amplifiers, as key components in experimental platforms within the biomedical field, play a crucial role in biomedical research. Aigtek has compiled a selection of past experimental cases into a collection, hoping to assist those engaged in biomedical research.

Direction 1: Microfluidic Testing

Microfluidic testing is a technology that precisely controls and manipulates fluids at the microscale. It is a novel scientific technique characterized by fluid control within micro/nano-scale spaces, enabling basic laboratory functions such as biological and chemical analyses.

Application of Power Amplifiers in Microfluidic Chip Testing

This experiment focuses on the metabolic product amino acids, studying the characteristics of picoliter-sized microdroplets encapsulating amino acids. Research on these microdroplets lays the foundation for applying droplet microfluidic chip systems in amino acid detection, high-throughput screening of corresponding production strains, and directed evolutionary engineering.

Application of Power Amplifiers in Droplet Microparticle Sorting via Microfluidic Technology

This experiment designed and fabricated a chip suitable for biological sample analysis and detection using soft lithography. Experiments were conducted in a sodium alginate solution environment, with different microparticles used to simulate the role of biological molecules. For detecting biological molecules, it is necessary to screen microdroplets, selecting target droplets from a large population, thereby significantly improving detection efficiency and accuracy.

Application of Power Amplifiers in Controlled Fusion of Multi-Component Microdroplets under AC Electric Fields

This experiment utilized a controlled microdroplet fusion system where electric field force served as the fusion driving force. Different electrode designs and waveform configurations were employed to achieve controlled fusion of microscale droplets. Parameters such as flow rate, component ratio, surface tension, dielectric constant, and conductivity were systematically studied.

Application of Voltage Amplifiers in Microelectrode-Based Microfluidic Chip Research

This experiment used microelectrodes to transmit external electrical signals into the chip, enabling functions such as electrophoresis, dielectrophoresis, electroporation, and electrofusion. The electrodes also acted as sensors, converting internal environmental parameters of the chip into electrical signals for external transmission, allowing detection of parameters like pH, pressure, concentration, temperature, and impedance within the microfluidic chip.

Direction 2: Dielectrophoresis Testing

Dielectrophoresis (DEP) is a biomolecular manipulation technique applied in microfluidic chips and novel separation/detection technologies. Electrodes distributed on the surface of dielectric materials can separate or arrange target substances into specific patterns under electric field action. DEP primarily relies on differences between the applied electric field and the intrinsic dielectric properties of materials to achieve separation.

Power Amplifiers for Multi-Stage Cell Sorting via Dielectrophoretic Force

This experiment aimed to address the common clogging issues in microfiltration methods using dielectrophoretic force. By varying the signal source frequency, the frequency ranges where cells experience positive or negative dielectrophoretic forces were observed to determine the optimal signal frequency for the experiment. Ultimately, sustainable multi-stage sorting of particles and cells under dielectrophoresis was achieved.

Application of Power Amplifiers in Dielectrophoretic Microalgae Separation Chip Research

This experiment used a separation system to test the movement of single particle types in the separation chip, the separation of two different-sized particles, and the separation of microalgae cells from particles. Finally, the separation functionality of the chip for microalgae cells was validated, achieving highly efficient, automated, and continuous separation of microalgae cells from similarly sized polystyrene particles.

Direction 3: Photoelectric Performance Testing

Photoelectric performance testing refers to the process of quantitatively analyzing and evaluating the photoelectric characteristics of objects through a series of tests and measurements. It holds significant importance for the production, research, development, and application of photoelectric devices, providing insights into their performance and reliability, thereby offering basis and reference for product improvement and process optimization.

Application of Power Amplifiers in Studying the Influence of Electric Field Frequency on Electro-Optic Properties

In this experiment, the crude product was purified via silica gel column chromatography using dichloromethane as the eluent, yielding a final white powder after drying. Polyethylene terephthalate (PET) film was used as the spacer for the liquid crystal cell, eliminating the need for a surface alignment layer. The liquid crystal was filled into the cell in its isotropic state via capillary action. By applying electric fields of different frequencies, the organizational structure and transmittance were observed.

Other Directions:

Application of ATA-2022H Dual-Channel Power Amplifier in Acoustic-Optic Drive Testing

This experiment used a microcontroller to trigger a pulse stimulation sequence with random time intervals. The pulses were amplified to specified voltage amplitudes by the power amplifier to observe whether the required electrical stimulation intensity was achieved, enabling acoustic, optical, and electrical stimulation in experimental mice to induce hypertension. As shown in the figure above, the power amplifier outputs were used: Channel 1 for generating the electrical stimulation part in the platform, and Channel 2 for driving the acoustic-optic stimulation.

Experimental Study on Bone Surface Temperature Rise under Alternating Electric Fields Using High-Voltage Amplifiers

This experiment aimed to study the electromechanical properties of bone under alternating electric fields by investigating changes in its temperature and other aspects, thereby exploring bone growth in depth. Comparing the temperature changes and deformation of classical dielectrics revealed that the temperature rise in classical dielectrics under alternating electric fields is very low, within the measurement error of the thermometer. In contrast, the applied electric field caused both temperature rise and bending deformation in bone.

Xi'an Aigtek Electronics is a high-tech enterprise specializing in the research, development, production, and sales of electronic measurement instruments, including power amplifiers, high-voltage amplifiers, power amplifier modules, power signal sources, RF power amplifiers, preamplifiers for small signals, high-precision voltage sources, and high-precision current sources, providing users with competitive testing solutions. Aigtek has become a large-scale instrument supplier with a wide range of product lines in the industry, and demo units are available for free trial.