, Volume 5, Issue 3, pp 501-504,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 04 Feb 2010

Polaron Hopping in Nano-scale Poly(dA)–Poly(dT) DNA


We investigate the current–voltage relationship and the temperature-dependent conductance of nano-scale samples of poly(dA)–poly(dT) DNA molecules. A polaron hopping model has been used to calculate the I–V characteristic of nano-scale samples of DNA. This model agrees with the data for current versus voltage at temperatures greater than 100 K. The quantities G 0 , i 0 , and T 1d are determined empirically, and the conductivity is estimated for samples of poly(dA)–poly(dT).