银纳米线的TEM表征

通过交流电沉积的方法,以多孔铝阳极氧化膜（Al2O3/Al）为模板,制备金属银纳米线.透射电子显微镜（TEM）分析表明, 银纳米线长度平均约为5 μm, 直径25 nm；银纳米线在多孔Al2O3/Al孔内互相平行,显示凸凹相间的条纹结构.选区电子衍射（SAED）证实,银纳米线具有面心立方（FCC）的多晶结构,探讨了银纳米线凸凹相间条纹结构的形成机理.

Electrochemically Assembled Silver Nanowire Arrays and Its Structural Characterization

Aluminum specimens were first anodized in a sulfuric acid bath to prepare the porous aluminum anodic oxide template, and then silver was electrodeposited into pores of the anodized aluminum by using alternating current (AC). The morphology of the silver in pores of anodized aluminum was characterized by transmission electron microscopy (TEM), and the micrographs exhibited that silver was assembled in the form of nanowires with a diameter of ac 25 nm. and length up to 5 um. The nanowires have a structure of parallel bright stripes alternating with parallel dark stripes (see Fig. 2 (e)). Silver nanowires are parallel to each other in the pores of the porous aluminum anodic oxide template. Selected area electron diffraction (SAED) pattern revealved that silver nanowire is of polycrystalline structure. Additionally, the formation mechanism of the structure of parallel bright stripes alternating with parallel dark stripes was discussed.