暴露于电磁场的人类头部模型与各种金属物体在6 GHz以下频率的频率
Niyazi İl, Kayhan Ateş1, Şükrü Özen1
1Department of Electrical and Electronics Engineering, Akdeniz University, Antalya, Turkey.
Electromagnetic biology and medicine
|June 4, 2023
概括
像耳环和眼镜这样的金属物体可以增加5G设备在人脑中的电磁能量吸收. 然而,这些特定吸收率 (SAR) 值仍然低于安全限值.
科学领域:
- 生物医学工程 生物医学工程
- 电磁学 电磁学 电磁学 电磁学
- 计算物理 计算物理
背景情况:
- 第五代 (5G) 技术利用高达6 GHz的频率,引发了人们对人体吸收电磁能量的担忧.
- 金属植入物或配件与5G电磁场之间的相互作用需要调查,以评估潜在的健康风险.
- 之前的研究集中在一般的5G暴露,不太关注金属外体引起的局部影响.
研究的目的:
- 为了评估人类头部模型中的特定吸收率 (SAR),用金属物体暴露于5G频率.
- 分析金属框架眼镜,牙科植入物和耳环对电磁场暴露的影响.
- 为了确定金属物体是否会改变生物组织中电磁能量的吸收.
主要方法:
- 使用有限集成技术 (FIT) 进行数值模拟的商业软件.
- 模拟一个现实的人类头部,结合各种金属物体 (眼镜,植入物,耳环).
- 在多个5G频率 (0.9,1.8,2.1,2.45,3.5和5 GHz) 上分析SAR和电场强度.
主要成果:
- 14 × 10−5 W/kg (10g平均组织) 的最大SAR发生在2.45GHz的耳环.
- 最高的电场强度为0.52V/m,在所有金属物体存在的1.8GHz时观察到.
- 金属物体在表面组织中增加了SAR,但对更深层组织起到了屏蔽作用.
结论:
- 眼镜和耳环等金属物体可以增强人类头部组织中的局部SAR值.
- 金属物体对更深层组织的屏蔽作用需要进一步研究.
- 观察到的SAR值在已确定的国际安全限值内,这表明这些特定相互作用不会立即引起健康问题.
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