Application Cases

With the continuous advancement of the electronics industry, the integration level of electronic devices is increasing, leading to stricter requirements for the precision of production equipment. Common issues such as circuit resonance and mutual inductance often arise due to insufficient control precision of circuit isolation adhesives. Therefore, integrating microfluidic technology into the electronics industry for precision manufacturing and processing is of paramount importance. The fundamental principle of microfluidic technology involves the movement of materials along the electric field direction driven by electrostatic forces, which necessitates the use of high-voltage equipment to output thousands of volts to generate sufficient electric field forces.

Aigtek’s ATA-7000 high-voltage amplifier can achieve a maximum output voltage of 40 kVpp and amplify AC waveforms of any type, meeting the testing requirements for various high-voltage electric fields.

Experiment Name: EHD Printing-Based Electronic Dispensing Technology

Experimental Principle: A high voltage is applied to the printing nozzle while the collection substrate is grounded, creating a strong electric field between the printing nozzle and the collection plate. The colloidal solution extruded from the nozzle tip generates free charges on its surface to counteract the intense electric field in the space. These charges move from high potential to low potential within the electric field, simultaneously driving the flow of the colloidal solution at the nozzle tip.

Experimental Block Diagram:

Experimental Setup Image:

Experimental Procedure:
Configure the signal generator to output a square wave with an amplitude of 0–4 V, a frequency of 50 Hz, and a duty cycle of 50%. The output signal from the signal generator is connected to the high-voltage amplifier. The amplified voltage signal’s positive electrode is connected to the printing nozzle, and the negative electrode is connected to the collection substrate. Subsequently, the 3D printer is activated, and the voltage is gradually increased. Under the influence of the electric field force, the adhesive solution forms a Taylor cone beneath the nozzle, with the stretching force at the tip of the cone continuously increasing, ultimately forming a jet.

Experimental Results:
By utilizing high voltage, the size of the Taylor cone formed by the adhesive solution can be precisely controlled, enabling precision processing in the dispensing process for electronic device circuits.

Role of the Power Amplifier:
As the core component of the entire experiment, the power amplifier provides a high-stability, low-distortion high-voltage signal in the range of 0–4000 V, which is used to generate the electric field force.

Power Amplifier Recommendations:
ATA-2000 Series High-Voltage Amplifier, ATA-7000 Series High-Voltage Amplifier

Figure: ATA-7000 Series High-Voltage Amplifier Specifications

Application Areas: Precision Electronic Instrument Manufacturing

Application Scenarios: Precision Circuit Design, Precision Instrument Processing, Microfluidic Chip Structure Testing

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