In recent, novel technologies which apply bio-macromolecules to bio-nanodevices attract much attention. Particularly, DNAs have several desirable characteristics: complementary base pairs, self assembly, and electric conductivity. It is expected that high-speed DNA sequencers can be developed by using these specific characteristics of DNAs. In the present study, we develop a theoretical model to analyze the difference of DNA base molecules, in which electron scattering is simulated based on classical electrodynamics and scattering angles are evaluated. Consequently, it is found that scattering angles of the scattered electrons are clearly different from each other.

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