Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/68666
Type: Artigo de periódico
Title: ON THE FORMATION OF DISSIPATIVE SPATIAL PATTERNS OF CHARGE-CARRIERS IN BIOSYSTEMS
Author: ESPERIDIAO, AS
VASCONCELLOS, AR
LUZZI, R
Abstract: It is shown that in systems like large aggregates of biological molecules, population inversion of charge carriers, for example as produced by photoexcitation processes, may have competitive advantage beyond critical levels of excitation to produce ordered spatial structures (morphological transitions). In our analysis electromagnetic radiation transfers electrons from bonding states into a continuum of itinerant antibonding states in a p-type doped sample. In this system, in which energy is pumped continuously by an external source, the interplay of collective and dissipative processes can be responsible for the condensation of a self-organized spatially ordered structure. The study we present here is carried out resorting to the powerful nonequilibrium statistical operator method, thus showing that it can be provide a mechano-statistical formalism at the microscopic level for the treatment of Prigogine's synergetic dissipative structures.
Country: Itália
Editor: Editrice Compositori Bologna
Rights: fechado
Identifier DOI: 10.1007/BF02484361
Date Issue: 1995
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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