Abstract: Based on three Hamaker hypothesizes and Lennard-Jones potential, the model of rigid sphere-panel nano-contact is presented to solve the micromechanic "microcollision" and "nanocontact" problems, and the adhesion equations between the sphere and the first layer atom or the N layer atom of the panel are obtained by continuum method. The conclusion shows that the principal atoms affecting nanocotact force are the minority layers closing the contact zone.

Key words: micromechanic, hamaker hypothesizes, nano-contact