No.5（2010）7.Electromagnetic shielding material containing plant micro-coils

Takeshi Ueno, Shota Takemura, Takeshi Kobayashi, Masahiro Shimada, Noriaki Sugamoto, Yasunori Yamanobe, Atsushi Yamada

  Micro-coils can be prodeced from a spiral organ of plant origin (Spirulina, a type of vascular and algae) by electroless plating. The electromagnetic properties of silicone sheets containing copper-plated micro-coils have been investigated to evaluate their possibility as an electromagnetic absorption material. Permeability measurements indicated a substantial increase in the specific permeability in contrast to sheets without the micro-coils. 3mm-thick sheets indicated an electromagnetic absorption of 20dB at the maximum in the measured frequency range of 1 to 40GHz.

Keywords

Micro Coil, Spirulina,EMC

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