자기 조립 분자막의 윤활 특성에 관한 연구

Investigation of lubrication characteristics of self-assembled monolayer

The lubrication characteristics of SAM(self-assembled monolayer) have been investigated according to the change of surface group and surface temperature treatment with FDTS(1H, 1H, 2H, 2H-Perflurodecyltrichlorosilane) SAM and OTS(octadecyltrichlorosilane) SAM in micro scale. From the experimental results, it was found that OTS SAM gets destroyed at $200^{\circ}C$ and stiction and fiction coefficient increased, but FDTS SAM was stable up to $400^{\circ}C$. Also, it was found that the friction coefficient of normal OTS SAM is lower than that of FDTS SAM, but stiction is vice versa. This work shows the importance of surface group of self-assembled monolayer to control the lubrication characteristics and thermal stability.