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运用双流体理论,在同时考虑了碳纳米管中低温氢等离子体的电子碰撞吸收和氢离子碰撞吸收的基础上,理论导出了铁催化高压歧化生成的碳纳米管中低温氢等离子体的微波吸收系数公式,数值计算了不同条件下的微波吸收系数.模拟结果表明,铁催化高压歧化生成的碳纳米管中低温氢等离子体对2.45GHz的微波产生强烈吸收.理论结果与实验数据相吻合.

Using double-fluid theory, a microwave absorption coefficient of cold hydrogen plasma in CNTs, which were grown by iron-catalyzed high-pressure disproportionation (HiPco), is deduced theoretically. In this paper, the both electron collision absorption and ion collision absorption of cold hydrogen plasma in CNTs are considered at the same time. Then microwave absorption coefficient is calculated under different condition. The Simulations results show that cold hydrogen plasma in HiPco CNTs exhibit the strong microwave( around 2. 45 GHz) absorption, numerical result is in good agreement with the experimental data.

参考文献

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[2] Ye Z;Deering WD;Krokhin A;Roberts JA .Microwave absorption by an array of carbon nanotubes: A phenomenological model[J].Physical review, B. Condensed matter and materials physics,2006(7):5425-1-5425-5-0.
[3] 彭志华,彭延峰,宁艳桃,彭景翠,郭燕春.碳纳米管的本征微波吸收特性研究[J].河南科学,2010(12):1526-1529.
[4] 彭志华,彭景翠,欧玉,汪洁洋,石晓燕.碳纳米管微波损耗机理的探讨[J].功能材料,2006(04):621-623.
[5] 彭志华,龚学余,彭延峰,贾鹏,刘桂华,郭燕春.碳纳米管中氢等离子体的介电特性及微波吸收机理研究[J].南华大学学报(自然科学版),2010(04):28-32.
[6] 贾鹏,郭萍,彭志华,刘桂平,郭燕春.碳纳米管/聚合物复合材料的微波介电特性[J].河北理工大学学报(自然科学版),2010(02):63-67,74.
[7] 刘桂平,郭萍,彭志华,贾鹏,郭燕春.铁磁性粒子填充碳纳米管的改进型交换共振模型[J].湖南工业大学学报,2010(06):27-30.
[8] 彭志华 .碳纳米管材料的微波吸收机理研究[D].湖南大学,2010.
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