NEWS
PUBLICATIONS

01/12/2003

Contact
nk@itis.ethz.ch

 

Suitability of FDTD Based TCAD Tools for RF Design of Mobile Phones

Nicolas Chavannes, Roger Tay, Neviana Nikoloski and Niels Kuster, IEEE Antennas and Propagation Magazine, Volume 45, Issue 6, pp. 52–66, December 2003

 

 
PUBLICATIONS

01/07/2003

Contact
nk@itis.ethz.ch

 

Correction of the Numerical Reflection Coefficient of the Finite-Difference Time-Domain Method for Efficient Simulation of Vertical-Cavity Surface-Emitting Lasers

Andreas Christ, Matthias Streiff, Andreas Witzig, Niels Kuster, and Wolfgang Fichtner, Journal of the Optical Society of America B, 2003, Volume 20, Issue 7, pp. 1401–1408, July 2003

 

 
PUBLICATIONS

01/05/2003

Contact
nk@itis.ethz.ch

 

Radio Frequency Electromagnetic Field Exposure in Humans: Estimation of SAR Distribution in the Brain, Effects on Sleep and Heart Rate

Reto Huber, Jürgen Schuderer, Thomas Graf, Kathrin Jütz, Alexander A. Borbély, Niels Kuster, and Peter Achermann, Bioelectromagnetics, Volume 24, Issue 4, pp. 262–276, May 2003

 

 
Effect of the Meniscus at the Solid/Liquid Interface on the SAR Distribution in Petri Dishes and Flasks
01/02/2003

Effect of the Meniscus at the Solid/Liquid Interface on the SAR Distribution in Petri Dishes and Flasks

Jürgen Schuderer and Niels Kuster, Bioelectromagnetics, Volume 24, Issue 2, pp. 103–108, February 2003


Several authors have reported that the meniscus as occurring at the walls of Petri dishes and flasks (solid–liquid interface) can significantly affect the SAR distribution in the entire dish and flask, while others have ignored this effect. In this study, this effect has been comprehensively analyzed by numerical means supported by theoretical considerations. The focus is on E polarization, which results in the most homogeneous exposure for monolayer cell cultures and therefore is the most often applied polarization in exposure setups for risk assessment studies. This includes setups based on TEM cells, waveguides, radial transmission lines (RTL), and HF chambers. The conclusion of this study is that the meniscus and its size have a significant effect on the strength and homogeneity of the induced SAR distribution. Hence, the meniscus needs to be accounted for in the determination of the averaged SAR as well as in the uncertainty assessment. It has also been demonstrated that a voxel size of less than 0.2 mm is needed to predict the SAR values for a monolayer of cells accurately.