| 학회 | 한국화학공학회 |
| 학술대회 | 2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터) |
| 권호 | 23권 2호, p.2039 |
| 발표분야 | 재료 |
| 제목 | Hierarchical structures with immensely durable superhydrophobic surface in dynamic and underwater conditions |
| 초록 | Non-wetting states with high durability in dynamic and underwater conditions are desirable for practical applications in various fields. Despite increasing demands for dual stability of non-wetting surfaces, studies investigating both the impact dynamics and underwater stability are very rare. In this study, we performed water droplet impact dynamics and underwater stability studies using ZnO/Si hierarchical nanostructures. The effects of the surface structure on the non-wetting states in dynamic conditions were first studied by comparing various surface structures. The transition of wetting states occurs on ZnO/Si HNs as the impact velocity increases. Measurement of the critical We number during transition enables us to determine the parameters of wetting pressure using a simple model. Moreover, compared to other structures exhibit increased air pocket life-times in underwater conditions. Our study indicates that optimally designed hierarchical surfaces have remarkably high durability non-wetting states in both dynamic and underwater conditions, expanding the potential application of non-wetting surfaces. |
| 저자 | 백승현 1 , 한기덕 2 , 용기중 2 |
| 소속 | 1 포항공과대, 2 postech |
| 키워드 | 화공소재 전반 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
