S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Journal Papers (저널논문_전기·정보공학부)
산소 플라즈마 처리와 격자 구조를 적용한 폴리이미드 구조물의 장기간 체내 안정성에 대한 연구
Effect of oxygen plasma treatment and grid design between polyimide layers for longterm implantation
- 김의태; 이승우; 김성준
- Issue Date
- 제36회 대한의용생체공학회 추계학술대회, 고려대학교, 2007년 11월 9일.
- Two years of polyimide based electrode structure implantation into the rabbit eye showed spatial features of local swellings and peeling off nearby electrode sites. In case of swelling and peeling off, it causes serious gradual deteoriation of polyimide structure and result in functional failure for electrode.
We suggest a reinforced structure with chemical, mechanical oxygen plasma treatment and geometrical grid design to prevent from swelling or peeling off of polyimide layer.
To show the effect of these structural modification, we introduced a reliability test method of layer adhesion, blister test. Designed samples were soaked into phosphate buffered saline(PBS) for accelerated aging study.
In this study, such a reinforcement showed an effectiveness of water absorption barrier and longer preservation of structure compared to a non-treated structure.