摘要
A double helix model of charge transport in DNA molecule is given and the transmission spectra of four DNA sequences are obtained.The calculated results show that the transmission characteristics of DNA are not only related to the longitudinal transport but also to the transverse transport of molecule.The periodic sequence with the same composition has stronger conduction ability.With the increasing of bases composition,the conductive ability reduces,but the weight of θ direction rises in charge transfer.
基金
supported by National Natural Science Foundation of China under Grant No.60571062
the Natural Science Foundation of Shandong Province under Grant No.Y2004G09
