Revista Facultad de Ingeniería - Universidad de Tarapacá
versão On-line ISSN 0718-1337
TORRES SILVA, Héctor e ZAMORANO LUCERO, Mario. CHIRAL MULTIPHOTON ABSORPTION AND INVERSE SKIN EFFECT IN WLAN SYSTEMS. Rev. Fac. Ing. - Univ. Tarapacá [online]. 2005, vol.13, n.3, pp.122-130. ISSN 0718-1337. http://dx.doi.org/10.4067/S0718-13372005000300017.
A model formed by chiral bioplasma with a set of macromolecules of DNA, which represents the human head inner structure, makes possible to analyze its behavior, when it is radiated by a microwave electromagnetic field from cellular phones and WLAN's at frequencies of 2.4 and 5.2 GHz is presented. The finite difference time domain, FDTD, numeric technique is used under multiphoton regime deduced from Maxwell equations. The numerical results of the Specific Absorption Rate, SAR, show the SAR behavior in function of input power and the chirality factor. The main conclusions of our work are: a) the microwave absorption from cellular phones or WLAN's is enhanced, compared with classical models, when values of the normalized chiral factor are of order of one which appear under multiphoton regime ; b) a phenomena like an “inverse skin effect” in 5.2 GHz, with respect to a 2.4 GHz source, was observed. c) In the metamaterial region we show that the absorption rate always is positive.
Palavras-chave : Chirality; brain tissue; Maxwell; FDTD; SAR.