Development of a High Flow Rate 3-D Electroosmotic Flow Pump.

Area of Science:

• Microfluidics
• Electrokinetics
• Biomedical Engineering

Background:

• Electroosmotic flow (EOF) pumps offer precise fluid manipulation.
• Miniaturization is crucial for implantable biomedical devices.

Purpose of the Study:

• To propose and characterize a novel 3D parallel electroosmotic flow (EOF) pump.
• To investigate low-voltage operation and potential for implantable applications.

Main Methods:

• Fabrication of a 3D pump with parallel fluid channels between electrode layers.
• Utilized room temperature liquid metal for non-contact electrodes.
• Tested pumping performance using deionized water with fluorescent particles.

Main Results:

• Achieved a flow rate of 5.69 nL/min at a driving voltage of 2 V.
• Demonstrated successful operation with a compact design and minimal driving voltage.
• The structure allows for easy scalability to increase channel numbers and flow rates.

Conclusions:

• The developed 3D parallel EOF pump is a promising low-voltage fluidic device.
• Its small size and efficient performance indicate significant potential for implantable applications.
• The design is scalable for higher flow rate requirements.