Dynamics of nonlinear excitations in soft-quasi-one-dimensional molecular chains

V. Yu. Makeev; Vladimir P. Poponin; V. A. Schzeglov

doi:10.1117/12.57336

1 May 1991 Dynamics of nonlinear excitations in soft quasi-one-dimensional molecular chains

V. Yu. Makeev, Vladimir P. Poponin, V. A. Schzeglov

Proceedings Volume 1403, Laser Applications in Life Sciences; (1991) https://doi.org/10.1117/12.57336
Event: Laser Applications in Life Sciences, 1990, Moscow, Russian Federation

Abstract

The problem of vibrational energy transfer in ordered quasi-one-dimensional molecular structures is considered. The model of nonlinear lattice of classical nonlinear oscillators is investigated numerically in a broad range of parameter variations (anharmonisity of vibron and phonon subsystems, and nonlinear coupling between them). The conditions for the formation of soliton-like excitation of different types from initial local disturbances are determined. A numerical simulation showed that new types of supersonic anharmonic two-component solitons in an anharmonical lattice of harmonic oscillators can be excited. This type of nonlinear soliton-like excitation can be important in understanding the electron and energy transport mechanisms in molecular crystals, molecular aggregates, molecular oriented films and biopolimers.

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V. Yu. Makeev, Vladimir P. Poponin, and V. A. Schzeglov "Dynamics of nonlinear excitations in soft quasi-one-dimensional molecular chains", Proc. SPIE 1403, Laser Applications in Life Sciences, (1 May 1991); https://doi.org/10.1117/12.57336

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