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논문 기본 정보

자료유형
학술저널
저자정보
윤민아 (과학기술연합대학원대학교) 김찬 (과학기술연합대학원대학교) 원세정 (파동에너지극한제어연구단) 정현준 (파동에너지극한제어연구단) 김재현 (과학기술연합대학원대학교) 김광섭 (과학기술연합대학원대학교)
저널정보
한국트라이볼로지학회 Tribology and Lubricants 한국윤활학회지 제35권 제1호
발행연도
2019.2
수록면
9 - 15 (7page)

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Graphene is a fascinating material for fabricating flexible and transparent devices owing to its thickness and mechanical properties. To utilize graphene as a core material for devices, the transfer process of graphene is an inevitable step. The transfer process can be classified into wet and dry methods depending on the surrounding environment. The adhesion between graphene and a target substrate determines the success or failure of the transfer process. As the surface energy of graphene is an important parameter that provides adhesion, it is useful to estimate the surface energy to understand the mechanisms of the transfer process. However, the exact surface energy of graphene is still disputed because the wetting transparency of graphene depends on the polarity of the liquid and target substrate. Previously reported results use graphene transferred by the wet method. However, there are few reports on the surface energy of graphene transferred by the dry method. In this study, the surface energy of graphene transferred by the wet and dry methods is estimated. Wetting transparency occurs for certain combinations of liquids and substrates. For graphene on a polar substrate, the surface energy decreases by 25 and 35% for the wet and dry transfer methods, respectively. However, the surface energy of graphene on dispersive substrates decreases by ~10% regardless of the transfer method. In conclusion, the surface energy of graphene is 36~38 mJ/㎡, and differs depending on the transfer method and polarity of the substrate.

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Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
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