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Related Experiment Video

Updated: Aug 29, 2025

Fabrication of Large-area Free-standing Ultrathin Polymer Films

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Published on: June 3, 2015

Manually wound coil fabrication process based on cyclic olefin copolymer substrate.

Tae Kyung Lee, Hyun Been Jeong, Chulhun Seo

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|September 10, 2022

Summary

This study introduces a novel, rapid coil fabrication method for neural implants, enhancing wireless power transmission efficiency. The manual winding technique on polymer substrates shows promise for future high-efficiency power systems.

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Area of Science:

Biomedical Engineering
Materials Science

Background:

Neural prostheses require efficient wireless power transmission for function recovery.
Current wireless power systems for neural implants face challenges in achieving high efficiency due to coil parameter sensitivity.
Manufacturing coils on polymer substrates for nerve implants remains underexplored.

Purpose of the Study:

To propose an easy and fast manufacturing process for coils on polymer substrates for neural implants.
To evaluate the feasibility and performance of a manually wound coil for wireless power transmission.

Main Methods:

A coil was fabricated by manually winding 200-micrometer copper wire.
The manually wound coil was encapsulated using Cyclic Olefin Copolymer (COC).
A feasibility test was performed to assess the performance of the fabricated coil.

Main Results:

The manually wound coil did not resonate at the expected frequency due to its small size and manual fabrication.
The fabricated coil is anticipated to offer higher efficiency compared to coils produced via the PCB process.
The results indicate potential for high-efficiency wireless power transmission with further refinement.

Conclusions:

A straightforward and rapid coil manufacturing process on polymer substrates was successfully demonstrated.
The manually wound coil shows potential for improved wireless power transmission efficiency in neural implants.
Further optimization of the fabrication process could lead to highly efficient coils for neural implant applications.