射频刺激应用于含有生物源磁铁矿纳米晶体的悬浮液:吸收的能量转换

2018 International Conference and Exposition on Electrical And Power Engineering (EPE) Pub Date : 2018-10-01 DOI:10.1109/ICEPE.2018.8559675

S. Miclaus, P. Bechet, G. Mihai, C. Moisescu, I. Ardelean, L. Barbu-Tudoran, T. Radu, S. Oancea, M. Răcuciu

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引用次数: 0

摘要

磁性细菌(MTB)的水基悬浮液中含有磁性小体(MS)形式的磁铁矿(Fe3O4)纳米晶体，这些纳米晶体被链在细菌细胞内，研究人员将其暴露在射频场中，目的是观察电磁能量如何转换并以热效应或非热效应表示。通过施加连续波刺激，测试了较宽的频带(0.1-2.9)GHz。通过使用GTEM细胞和适当的暴露剂量测量仪器，提供并表征了显著的场强成分。测量了悬浮液的升温速率。由于记录值非常低，因此通过扫描透射电子显微镜方法、各种光谱方法和电导率测定进一步研究了能量转换的非热表达。已发现明显的非热效应，有待进一步研究。

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Radiofrequency Stimuli Applied to Suspensions Containing Biogenic Magnetite Nanocrystals: Absorbed Energy Conversion

Water-based suspensions of magnetotactic bacteria (MTB) containing magnetite (Fe3O4) nanocrystals in the form of magnetosomes (MS) chained inside the bacteria cells have been exposed to radiofrequency fields with the aim of observing how the electromagnetic energy is converted and expressed as thermal or non-thermal effects. A wide frequency band was tested, (0.1-2.9) GHz, by applying continuous wave stimuli. Significant field strength components were provided and characterized, by using a GTEM cell and adequate expo-dosimetric instruments. The heating rates of the suspensions were measured. Because the recorded values were very low, non-thermal expression of energetic conversion was further investigated by scanning-transmission electron microscopy methods, by various spectroscopic means and by electrical conductivity determinations. Clear non-thermal effects were revealed, which need further research.

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2018 International Conference and Exposition on Electrical And Power Engineering (EPE)

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