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Estimation of Nanomechanical Properties of Nanosurfaces Using Phase Contrast Imaging in Atomic Force Microscopy  

Ahn, Hyo-Sok (서울산업대학교 나노아이티공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.5, 2007 , pp. 115-121 More about this Journal
Abstract
Phase contrast imaging in atomic force microscopy showed a promise as an effective tool for better understanding of micromechanical properties of surfaces at nano scale. A qualitative estimation model for phase contrast images obtained with a tapping mode AFM was developed. This investigation demonstrated the high efficiency of combined analysis of topography and phase contrast images for characterizing nanosurfaces. Phase contrast images allowed estimation of relative stiffness(elastic modulus) of the sample surface. The phase contrast images revealed a significant inhomogeneity of the nano scale worn surfaces. Phase contrast images are also capable of revealing the formation of tribofilms.
Keywords
Phase contrast; AFM; Tapping mode; Transfer film; Diamond-like carbon coating;
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