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그래핀의 습윤성 및 제어기술 : Wettability of graphene and its control
손장엽(Jangyup Son) 한국세라믹학회 2020 세라미스트 Vol.23 No.2
The wettability is one of the most fundamental properties of a material surface. Especially, graphene, twodimensional (2D) surface material in which all the carbon atoms are exposed to the environment, is the best choice of template to study about the surface wettability. However, most studies have focused on the mechanical and electrical properties of graphene, not the surface wettability. This review article covers the wettability of graphene and provides recent research regarding the engineering of the surface wettability. This paper would be helpful for researchers working in this field and provides perspective for future carbon-liquid interacting applications.
Soft Magnetic Properties of Conetic Co-Sputtered with Aluminum
Jongkoo Lim,손장엽,홍종일 대한금속·재료학회 2014 METALS AND MATERIALS International Vol.20 No.3
Conetic (Ni77Fe14Cu5Mo4) and conetic co-sputtered with aluminum thin films are prepared and their softmagnetic properties are examined in order to investigate their eligibility for application in the free layer ofspin valve-based magnetic sensors. As the aluminum concentration increases, the coercivity and anisotropyfield of the film is reduced by more than 60%, which indicates that the soft magnetism is significantlyimproved. The thermal treatment further enhances the soft magnetic properties. This improvement can be attributedto the enhanced random anisotropy that results from the reduction in the grain size, which is caused by theincorporation of the aluminum into the conetic. These encouraging results imply that the conetic co-sputteredwith Al is sufficiently magnetically soft to be applied in spin valve-based sensors.