用多重分形方法研究了透射电镜(TEM)观察到的α-MoO3纳米纤维的形貌.TEM观察表明,样品中纳米纤维的分布和均匀程度都随着HNO3浓度的增加而增大,形貌由纤维状向带状过渡.多重分形谱的分析显示,随着HNO3浓度的增加,Δf从0.4345增大到2.4530,样品中纳米纤维的最大概率分布的数目多于最小概率分布的数目,说明纳米纤维数目和宽度均增加;分形谱宽Δα愈来愈小,表明纳米纤维的分布愈来愈均匀.因此,多重分形谱可以很久地表征α-MoO3纳米纤维的分布特性.
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