Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Gate Voltage Control of Long DNA Coherent Transport on Insulator
  Surface   We investigate the coherent transport properties of a DNA chain on a
substrate which is subjected to a uniform electric field perpendicular to the
surface. On the basis of the effective tight-binding model which simulates
charge transport through DNA, the transmission coefficient, Lyapunov exponent,
and localization length are numerically calculated by using the transfer-matrix
method. It is found that an isolated extended state may appear at the Fermi
level for a certain gate voltage when the interaction strength between the
chain and the substrate is position dependent but independent of the base-pair
sequence, leading to the gate voltage induced Metal-insulator transition (MIT).
Moreover, conductance and current-voltage characteristics are also calculated.
The relationship of Lyapunov exponent distribution to the current-voltage
characteristics is discussed. Two different conduction mechanisms are proposed
depending on effectively delocalized states and isolated extended states,
respectively. These results may provide perspectives for experimental work
aimed at controlling charge transport through DNA-based nanodevices.

8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph