We conducted an electromagnetic-thermal analysis of Petri dishes filled with different medium volumes under different radio frequency exposure conditions with the aim of identifying linear and non-linear parameters that might explain contradictory results of many in vitro bioelectromagnetic experiments. We found that power loss density and temperature depend on shape, size, and orientation of the exposed sample with respect to direction of incident energy, showing that the liquid medium acts as a receiving antenna. In addition, we investigated the possibility of convection from thermodynamic principles within the liquid medium. For a 35mm diameter Petri dish, a 2 or 4ml medium volume is too small to support vertical convection. Conversely, horizontal convective motion is possible for H-polarization exposures at 1.8GHz.

In vitro exposure. Linear and non-linear thermodynamic events in Petri dishes / Paffi, Alessandra; Liberti, Micaela; Apollonio, Francesca; Sheppard, Asher; Balzano, Quirino. - In: BIOELECTROMAGNETICS. - ISSN 0197-8462. - STAMPA. - 36:7(2015), pp. 527-537. [10.1002/bem.21923]

In vitro exposure. Linear and non-linear thermodynamic events in Petri dishes

PAFFI, ALESSANDRA;LIBERTI, Micaela;APOLLONIO, Francesca;
2015

Abstract

We conducted an electromagnetic-thermal analysis of Petri dishes filled with different medium volumes under different radio frequency exposure conditions with the aim of identifying linear and non-linear parameters that might explain contradictory results of many in vitro bioelectromagnetic experiments. We found that power loss density and temperature depend on shape, size, and orientation of the exposed sample with respect to direction of incident energy, showing that the liquid medium acts as a receiving antenna. In addition, we investigated the possibility of convection from thermodynamic principles within the liquid medium. For a 35mm diameter Petri dish, a 2 or 4ml medium volume is too small to support vertical convection. Conversely, horizontal convective motion is possible for H-polarization exposures at 1.8GHz.
2015
Antennas; Convection; Numerical dosimetry; RF exposure; Thermal analysis
01 Pubblicazione su rivista::01a Articolo in rivista
In vitro exposure. Linear and non-linear thermodynamic events in Petri dishes / Paffi, Alessandra; Liberti, Micaela; Apollonio, Francesca; Sheppard, Asher; Balzano, Quirino. - In: BIOELECTROMAGNETICS. - ISSN 0197-8462. - STAMPA. - 36:7(2015), pp. 527-537. [10.1002/bem.21923]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/910208
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