Characteristics of localized surface plasmon resonance of nanostructured Au patterns for biosensing

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Title
Characteristics of localized surface plasmon resonance of nanostructured Au patterns for biosensing
Author(s)
J S Yu; M Kim; S Kim; D H Ha; Bong Hyun Chung; Sang Jeon Chung; J S Yu
Bibliographic Citation
Journal of Nanoscience and Nanotechnology, vol. 8, no. 9, pp. 4548-4552
Publication Year
2008
Abstract
Periodic arrays of pseudotetrahedal-shaped gold nanoparticles were fabricated using nanosphere lithography (NSL) and examined for localized surface plasmon resonance (LSPR). The dependence of the LSPR on particle size of the periodic gold nanostructures was explored for potential application as a new biosensor. With increasing size and height of the Au nanoparticles, the absorption peak of the LSPR shifts to the longer wavelength and becomes relatively sharper. With thinner metal deposition or finer Au nanostructure, the absorption signal varies more sensitively for the changes in the Au particle size. The binding affinity study for biotin-streptavidine system on the Au nanopatterns resulted in blue-shifted absorption signal, opening up the possibility of the nanostructured Au pattern as a new LSPR biosensor.
Keyword
BiosensorLocalized surface plasmon resonanceNanofabrication
ISSN
1533-4880
Publisher
Amer Scientific Publishers
DOI
http://dx.doi.org/10.1166/jnn.2008.IC20
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
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