A Highly Efficient Low-Cost Flexible Neural Probe for Scalable Mass Fabrication

Area of Science:

• Neuroscience
• Bioengineering
• Materials Science

Background:

• Neural probes are crucial for brain-computer interfaces and neuroscience research.
• High fabrication costs and complex packaging hinder the adoption of conventional neural probes.
• There is a need for cost-effective, scalable neural probe solutions.

Purpose of the Study:

• To develop a low-cost, highly efficient, and mass-producible flexible neural probe.
• To overcome the limitations of traditional neural probe fabrication and packaging.
• To improve the accessibility of advanced neural recording technologies.

Main Methods:

• Utilized a standardized flexible printed circuit board (PCB) process for probe fabrication.
• Designed a probe with four independent flexible neural probes and a reusable interface PCB.
• Evaluated neural signal recording performance and scalability with eight electrodes.

Main Results:

• Achieved a production cost of $1.5 per unit with mass production capability (1000 units/3 days).
• Demonstrated neural signal recording performance comparable to traditional silicon-based probes.
• Confirmed scalability with eight electrodes for simultaneous measurements.

Conclusions:

• The developed flexible neural probe offers a cost-effective and scalable solution for neural recording.
• This innovation is expected to significantly increase the accessibility of neuroscience research and brain-computer interfaces.
• The standardized PCB process ensures high producibility and minimizes performance variations.