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National Technical University of Ukraine
This is an abstract for a poster to be presented at the Fifth Foresight Conference on Molecular Nanotechnology.
The problem of investigations of charge density dynamics in 2-D molecular structures is actual for the development of future molecular information processing devices. The model of the charge transport has been investigated for the structures which consists of such molecular chains: donor- mediator chain- acceptor organized in Langmuir-Blodgett films on the substrate. It is assumed that strong nonlinear charge carrier - conformation interaction is presented for molecular donor and acceptor.
The initial Hamiltonian of the system's model has been reduced to 3 nonlinear equations for homogenous systems (nonlinear diffusion equations for heterogeneous ones) with the formalism of density matrix. Their solutions were obtained by digital computer modeling and phase space method.
It is shown that it is possible to initiate by optic pump some dynamic effects of changing of charge density in the film with presence of external electric field. Particularly, in homogenous systems the following modes has been investigated:
In heterogeneous systems with well-defined parameters the number of nonlinear waves (autowaves) and non-equilibrium structures are possible to be initiated by the external optic pump. Particularly, the following ones has been investigated:
All effects above could be demonstrated in a view of computer
animation. Stability of numerical solutions of the model equations
has been investigated as well.
Victor Yu. Chekh,16 Polytechnichna Str., Design Office "Storm", National Technical University of Ukraine 252056 Kiev, Ukraine, ph: +038-044-274-0295, fax : +038-044-274-1015, email : email@example.com
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