ABSTRACT
Understanding the chemical reactions and electronic conduction
of DNA in the academic point of view as well as in engineering
and biochemical applications is essential. Although DNA has been
studied by various methods in various areas for as long as 60 years
since the discovery of the double-stranded structures of DNA [2],
it is still far from being well understood. Our goal is to find how
to calculate the electronic conduction of DNA [31, 177, 178]. For
this at first we have to solve the problem of quantum mechanics
of DNA as well as calculate the electronic states and electronic
spectrum of DNA. Calculating the electronic states of DNA through
quantum mechanics might sound simple in words, but practically
it is extremely difficult because DNA has a complementary double-
stranded helical structure made of complicated nucleotides, in
which there are many atoms and electrons. Obviously, it is not a
single-electron problem but a many-electron problem. In addition,
since DNA consists of genetic information, it has a very irregular
structure in itself. This means that we have to solve the Schro¨dinger
equation for electrons moving on the complicated double strand of
DNA.
