纳米棒
材料科学
镍
棒
铝
各向异性
硅
复合材料
纳米技术
光学
光电子学
冶金
医学
物理
病理
替代医学
作者
Paul G. Evans,William Hendren,R. Atkinson,Gregory A. Wurtz,Wayne Dickson,A. V. Zayats,Robert Pollard
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2006-11-10
卷期号:17 (23): 5746-5753
被引量:140
标识
DOI:10.1088/0957-4484/17/23/006
摘要
Arrays of nickel and gold nanorods have been grown on glass and silicon substrates using porous alumina templates of less than 500 nm thickness. A method is demonstrated for varying the diameter of the nanorods whilst keeping the spacing constant. Optical extinction spectra for the gold nanorods show two distinct maxima associated with the transverse and longitudinal axes of the rods. Adding small quantities of oxygen to the aluminium before anodization is found to improve the sharpness of the extinction peaks. The spectral position of the longitudinal peak is shown to be sensitive to the nanorod diameter for constant length and spacing. For the nickel nanorods it is shown that the magnetic properties are governed by both interactions between the wires and shape anisotropy.
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