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黑碳团簇气溶胶混合生长的红外吸收特性及长波辐射效应 被引量:2
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作者 郑利娟 程天海 吴俣 《物理学报》 SCIE EI CAS CSCD 北大核心 2017年第16期298-306,共9页
黑碳气溶胶是当前气溶胶辐射强迫评估中最不确定的因子.本文通过构建黑碳的微物理模型,分别模拟了新鲜状态的黑碳气溶胶和混合生长(老化)后被硫酸盐包裹的黑碳气溶胶,利用叠加T矩阵方法计算获得了具有团簇形态和多成分混合的黑碳气溶胶... 黑碳气溶胶是当前气溶胶辐射强迫评估中最不确定的因子.本文通过构建黑碳的微物理模型,分别模拟了新鲜状态的黑碳气溶胶和混合生长(老化)后被硫酸盐包裹的黑碳气溶胶,利用叠加T矩阵方法计算获得了具有团簇形态和多成分混合的黑碳气溶胶红外吸收特性,通过大气辐射传输模型模拟了黑碳气溶胶的长波辐射强迫,分析了典型理化参数的敏感性.发现黑碳混合生长可以显著增强其大气层顶的长波辐射强迫,最高可达3倍.而且,包裹黑碳的硫酸盐半径越大,将明显增强大气层顶的黑碳长波辐射强迫.这些发现将有助于降低黑碳气溶胶气候效应评估的不确定性. 展开更多
关键词 气溶胶 黑碳 长波辐射强迫 粒子吸收特性
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Synthesis of flowerlike nickel particles and their microwave absorbing properties 被引量:3
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作者 齐海萍 曹海琳 黄玉东 《Journal of Central South University》 SCIE EI CAS 2014年第8期3007-3012,共6页
Two kinds of nickel particles with flower-like struc~'es assembled with a number of nano-flakes were synthesized and the relationship of their morphology and microwave absorbing properties was studied. The electromag... Two kinds of nickel particles with flower-like struc~'es assembled with a number of nano-flakes were synthesized and the relationship of their morphology and microwave absorbing properties was studied. The electromagnetic parameters of these flower-like Ni were measured with vector network analyzer at 2-18 GHz frequency and the reflection losses (RL) with different sample thicknesses were calculated. The results indicate that the flower-like nickel-wax composites with the sample thickness less than 2 mm show excellent absorbing ability. This result is expected to play a guiding role in the preparation of the highly efficient absorber. 展开更多
关键词 NICKEL FLOWER-LIKE microwave absorbing properties
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