| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
신진연구자 특별 심포지움 |
| 제목 |
Surface Energy Driven Marangoni Flow in Polymer Films to Generate Topographic Patterns |
| 초록 |
The Marangoni effect describes how fluid flows in response to gradients in surface energy. In this presentation, we will report a photochemical strategy for preprograming surface energy spatial patterns in solid, glassy polystyrene (PS) thin films. UV irradiation through a photo-mask selectively dehydrogenates the PS backbone locally, thus increasing surface energy in the UV exposed regions compared to the unexposed regions. The flow, then, is shown to occur from regions of low surface energy to regions of high surface energy when a polymer film possessing the spatially defined surface energy pattern is heated to the liquid state. To quantify and verify this phenomenon, a theoretical model that gives a more thorough understanding of the physics of this process will also be presented along with comparisons between simulative predictions and experimental observations. |
| 저자 |
김채빈1, Roger T. Bonnecaze2, Christopher J. Ellison3
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| 소속 |
1한국과학기술(연), 2Univ. of Texas at Austin, 3Univ. of Minnesota Twin Cities |
| 키워드 |
thin film; patterning; Marangoni effect
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| E-Mail |
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