Berlin 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DS: Fachverband Dünne Schichten

DS 1: Layer properties: electrical, optical, and mechanical properties

DS 1.9: Vortrag

Montag, 26. März 2012, 11:30–11:45, H 0111

Electrical conductivity of CNT modified surfaces: Theoretical model — •Fedor Semeriyanov, Alexander Chervanyov, and Gert Heinrich — Leibniz Institute of Polymer Research Dresden, Dresden, Germany

We use a combination of the Monte Carlo simulations and self-consistent field theory in order to calculate electrical conductivity of non-uniform layer of carbon nanotubes (CNT) deposited onto a glass surface. As a first step, we determine density structure of this CNT layer by using the self-consistent field theory with the effect of CNT stiffness taken into account. The developed method makes it possible to study the dependence of the CNT layer density structure (including relative amounts of loops, tails and trains) on the affinity of the substrate surface for CNT's. Next, we incorporate the obtained density structure into the Monte Carlo simulations of the electrical conductivity of CNT modified surface. As a final step, we obtain the relation between the number of CNT-CNT contacts in the film with depth dependent density and its dc conductivity. This work is supported by DFG SPP1369.