Development of in vitro exposure setups for experiments on nonthergal biological effects of modulated high intensity radiofrequency electromagnetic fields.

我们开发了微波暴露系统，用于微波体外生物效应实验。由于本研究的特别兴趣是移动电话设备局部暴露于头部对健康的影响，因此需要在非热条件下的强内场制备了梳状微电极。电池被放置在电极之间。一种利用掩膜将细胞放置在适当位置的技术被开发出来。该电极系统实现了对细胞的高强度暴露。研制了一种圆波导曝光系统。该系统可以在所需条件下暴露大量细胞。通过数值和实验方法对该装置进行了暴露评估进一步改进了曝光系统。设计了一种带横向狭缝的矩形波导。这种设置在输入功率为1W的情况下实现了30 W/kg的高强度曝光。

1 We developed microwave exposure systems for experiments on biological effects of microwaves in vitro. Strong internal field in the athermal condition was required as the special interest in this research was the health effect of localized exposure on the head by mobile telephone devices.2 Comb-type microelectrocles were fabricated. Cells were placed between the electrocles. A technique to place cells at proper positions was developed using a mask. This electrode system achieved the high intensity exposure on cells.3. A circular waveguide exposure system was developed. This system could expose a large number of cells in the required condition. The exposure assessment of this setup was made by means of numerical as well as experimental approaches.4 Further developments were made to improve the exposure system. A rectangular waveguide with a transversal slit was designed. This setup achieved very high intensity exposure of 30 W/kg for the input power of 1W.