Growth and properties of gold and nickel nanorods in thin film alumina

被引：122

作者：

Evans, P. ^{[1
]}

Hendren, W. R. ^{[1
]}

Atkinson, R. ^{[1
]}

Wurtz, G. A. ^{[1
]}

Dickson, W. ^{[1
]}

Zayats, A. V. ^{[1
]}

Pollard, R. J. ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Phys & Mat, Ctr Nanostruct Media, Belfast BT7 1NN, Antrim, North Ireland

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 23期

关键词：

D O I：

10.1088/0957-4484/17/23/006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

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.

引用

页码：5746 / 5753

页数：8

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