Current-voltage characterization has been made of circular deoxyribonucleic acid (DNA) bundle samples embedded in a water solution lying on a nylon porous membrane between vacuum-evaporated gold electrodes. The nonlinear behaviour observed at room temperature on samples of different molecular sizes and variable concentration has been interpreted as a long-range conduction mechanism that takes place by means of charge hopping through the network of molecules. A tunneling process acting as an additional transport channel inside single molecules between energetically appropriate bases has been inferred. Characteristic energies involved in the transport have also been reproducibly measured.
|Titolo:||DNA as a possible new material for electronics and photonics|
|Data di pubblicazione:||2008|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|