Growth and optical properties of silver nanostructures obtained on connected anodic aluminum oxide templates

被引：17

作者：

Giallongo, G. ^{[1
,2
]}

Durante, C. ^{[1
,2
]}

Pilot, R. ^{[1
,2
]}

Garoli, D. ^{[3
]}

Bozio, R. ^{[1
,2
]}

Romanato, F. ^{[3
]}

Gennaro, A. ^{[1
,2
]}

Rizzi, G. A. ^{[1
,2
]}

Granozzi, G. ^{[1
,2
]}

机构：

[1] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy

[2] Univ Padua, INSTM Res Unit, I-35131 Padua, Italy

[3] LaNN Lab Nanofabricat Nanodevices, Padua, Italy

来源：

NANOTECHNOLOGY | 2012年 / 23卷 / 32期

关键词：

SERS; DEPOSITION; FABRICATION; NANORODS; NICKEL; ARRAYS;

D O I：

10.1088/0957-4484/23/32/325604

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ag nanostructures are grown by AC electrodeposition on anodic alumina oxide (AAO) connected membranes acting as templates. Depending on the thickness of the template and on the voltage applied during the growth process, different Ag nanostructures with different optical properties are obtained. When AAO membranes about 1 mu m thick are used, the Ag nanostructures consist in Ag nanorods, at the bottom of the pores, and Ag nanotubes departing from the nanorods and filling the pores almost for the whole length. When AAO membranes about 3 mu m thick are used, the nanostructures are Ag spheroids, at the bottom of the pores, and Ag nanowires that do not reach the upper part of the alumina pores. The samples are characterized by angle resolved x-ray photoelectron spectroscopy, scanning electron microscopy and UV-vis and Raman spectroscopies. A simple NaOH etching procedure, followed by sonication in ethanol, allows one to obtain an exposed ordered array of Ag nanorods, suitable for surface-enhanced Raman spectroscopy, while in the other case (3 mu m thick AAO membranes) the sample can be used in localized surface plasmon resonance sensing.

引用

页数：10

共 42 条

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