中国科学院南京地质古生物研究所机构知识库

Nanochannel arrays with constant nanochannel density but varying nanochannel diameters in different areas in one piece of anodic alumina membrane are achieved. Using this type of membrane as a template, ordered Pb nanowire arrays with constant nanowire density but diameters decreasing radially were obtained by electrodeposition. Scanning electron microscopy and transmission electron microscopy (TEM) images taken from different areas of the Pb nanowire arrays show that we can control the growth of aligned Pb nanowires with different diameters in a single process at one time. The individual Pb nanowires have been characterized using selected-area electron diffraction and high-resolution TEM. Nanometre-scale fibrils, rods, wires, and tubules of metal, semiconductor, carbon, and other materials with the same density but different diameters in different areas can be fabricated using this type of template, in combination with other fabrication techniques. The simultaneous integration of ordered nanowire structures with different diameters embedded in a single anodic alumina membrane could be useful in nanodevice manufacture as well as electronics, optoelectronics, and magnetics.