Controlled assembly of sliver nanocap arrays with tunable gaps for molecular sensing using SERS

Author

Lang, Xianzhong ; Qiu, Teng ; Zhang, Wenjun ; Chu, Paul K.

Author_Institution

Dept. of Phys., Southeast Univ., Nanjing, China

fYear

2010

Firstpage

1347

Lastpage

1348

Abstract

A convenient nanotechnique for fabrication of highly ordered hemispherical silver nanocap arrays templated by porous anodic alumina membranes as robust and cost-efficient surface-enhanced Raman scattering (SERS) substrates is reported. This geometry exhibits a high Raman signal due to periodically hexagonal arrangements and gap control between the nanostructures in the sub-10 nm regime. The surface structure can further be tuned to optimize the enhancement factor according to optional porous anodic alumina fabrication and silver deposition parameters.

Keywords

nanofabrication; nanostructured materials; silver; surface enhanced Raman scattering; Ag; SERS substrates; controlled assembly; enhancement factor; gap control; high Raman signal; highly ordered hemispherical silver nanocap arrays; molecular sensing; nanostructures; periodically hexagonal arrangements; porous anodic alumina fabrication; porous anodic alumina membranes; silver deposition parameters; surface structure; surface-enhanced Raman scattering; tunable gaps; Assembly; Biomembranes; Fabrication; Geometry; Nanobioscience; Nanostructures; Physics; Raman scattering; Silver; Surface structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoelectronics Conference (INEC), 2010 3rd International

Conference_Location

Hong Kong

Print_ISBN

978-1-4244-3543-2

Electronic_ISBN

978-1-4244-3544-9

Type

conf

DOI

10.1109/INEC.2010.5424861

Filename

5424861