N ph

ed for line 1 Different types of self-assembled DNA networks were obtained and characterized by tapping mode atomic force microscopy The molecular self-assembly on solid substrates has through the extended-stack of the DNA helix [10]. It is leads to different interactions with small molecules. concentration of DNA and the procedure adopt for im-mobilization. A better understanding of these factors is necessary for sensor development. In this paper, tapping mode AFM was used to characterize the surface morphology of a DNA-base