Open Access
Subscription Access
Open Access
Subscription Access
Capillary Force Models for Interactions of Several Tip/Substrate in AFM Based on the Energy Method
Subscribe/Renew Journal
In this paper, an analytical model is derived for computation of the capillary force between AFM tip and sample surface. Several tip geometries are considered with the both symmetric and asymmetric liquid/solid interfaces. To investigate the validity and efficiency of the derived models, we have performed numerical analysis and the effect of various physical parameters including air humidity, the distance between AFM tip and sample surface, AFM tip geometry and contact angles on the meniscus force are investigated. Finally, the derived model for AFM blunt tip is compared with the experimental measurement and the accuracy and precision of the presented approach is summarized. Based on the analytic mathematical models presented in this paper, the analysis of realistic physical situations and the study of chemistry influence of different substrates on the capillary force have been possible.In this paper, an analytical model is derived for computation of the capillary force between AFM tip and sample surface. Several tip geometries are considered with the both symmetric and asymmetric liquid/solid interfaces. To investigate the validity and efficiency of the derived models, we have performed numerical analysis and the effect of various physical parameters including air humidity, the distance between AFM tip and sample surface, AFM tip geometry and contact angles on the meniscus force are investigated. Finally, the derived model for AFM blunt tip is compared with the experimental measurement and the accuracy and precision of the presented approach is summarized. Based on the analytic mathematical models presented in this paper, the analysis of realistic physical situations and the study of chemistry influence of different substrates on the capillary force have been possible.
Keywords
Atomic Force Microscope, Tip, Substrate, Capillary Force, Energy Method.
Subscription
Login to verify subscription
User
Font Size
Information
Abstract Views: 237
PDF Views: 3