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International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 438962, 10 pages
Research Article

Culture Medium Geometry: The Dominant Factor Affecting In Vitro RF Exposure Dosimetry

1Sapienza University of Rome, 00184 Rome, Italy
2Asher Sheppard Consulting, 4960 Hoen Avenue, Santa Rosa, CA 95405, USA
3Motorola Solutions, Inc., Plantation, FL 33322, USA
4University of Maryland, Rm 2134, Kim Building, College Park, MD 20742, USA

Received 13 November 2014; Accepted 30 December 2014

Academic Editor: Diego Caratelli

Copyright © 2015 Alessandra Paffi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Biological experiments that expose living cells or tissues to RF energy must have an aqueous medium to provide essential water, ions, nutrients, and growth factors. However, as we show here, the medium inherently functions as a receiving antenna that conveys RF energy to the biological entity in a manner entirely determined by exposure vessel geometry, orientation to the incident RF flux, frequency, and dielectric properties of the medium. We show for two common experimental arrangements that basic antenna theory can predict electromagnetic energy patterns that agree well with those otherwise obtained by computationally intensive methods that require specialized resources.