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Plasma effects in electromagnetic field interaction with biological tissue

Published online by Cambridge University Press:  08 March 2010

R. P. SHARMA ,
KARUNA BATRA  and
PETER S. EXCELL
R. P. SHARMA
Affiliation:
Center for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India (karunab2009@gmail.com)
KARUNA BATRA
Affiliation:
Center for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India (karunab2009@gmail.com)
PETER S. EXCELL
Affiliation:
Center for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India (karunab2009@gmail.com)
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Abstract

Theoretical analysis is presented of the nonlinear behavior of charge carriers in biological tissue under the influence of varying low-intensity electromagnetic (EM) field. The interaction occurs because of the nonlinear force arising due to the gradient of the EM field intensity acting on free electrons in the conduction band of proteins in metabolically active biological cell membrane receptors leading to a redistribution of charge carriers. Field dependence of the resulting dielectric constant is investigated by a suitable modification to include an additional electronic contribution term to the three-term Debye model. The exogenous EM field propagating in this nonlinear cellular medium satisfies the nonlinear Schrödinger equation and can be affected significantly. Resulting field effect can be substantially augmented and effective rectification/demodulation can occur. Possible implications of this modification on biological processes in white and grey matter are discussed.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 1 , February 2011 , pp. 117 - 132
Copyright
Copyright © Cambridge University Press 2010

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