| 학회 |
한국재료학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 |
27권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Stretchable and Flexible Fiber Electrode for Measuring Neural Signal with Au Nanoparticles Conductive Networks |
| 초록 |
Brain chip can reveal connectivity between new brain regions that have not been revealed before through precise analysis of brain circuits, and furthermore, it is possible to find ways to treat brain diseases through brain circuit control. Therefore, the development of an improved brain chip can be used as an important technical element in the search for the cause of the ultimate disease, beyond the development of treatments for brain diseases that are on the rise in recent years. The proposed fiber electrode is simply fabricated by immersing polymer fibers into metal precursor chemical solutions. The AuNPs based fiber electrode had good conductivity like AgNPs, and the change in resistance is low during mechanical deformation. In terms of adaptability in various biological environment, we confirmed that more than 90% of the cells were alive in the fabricated fiber electrodes through the stem cell viability test. For the application of biosensors, a brain chip for measuring nerve signals was developed using AuNPs based fiber probes. The developed device was inserted into the brain of mouse to perform a brain nerve signal measurement, and the results were similar to nerve signals measured using conventional probes. The developed fiber electrode has reliable conductivity and uniform conductive networks after repetitive mechanical deformation. To measuring biosignal, the brain chip was developed with AuNPs embedded fiber electrode and wireless signal modules. Neural signals measured from mice showed high quality and low noise compared with conventional electrodes. The proposed devices have potential to improve the body interface functions that can be applied for a long-term without interfering with the activity of the human body. |
| 저자 |
Chihyeong Won1, Taeyoon Lee2
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| 소속 |
1Nanobio Device Laboratory, 2School of Electrical and Electronic Engineering |
| 키워드 |
Conductive fiber; Neural probes; Young's modulus; Au nanoparticles
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| E-Mail |
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