A plasmonic biosensor array by block copolymer lithography

Title
A plasmonic biosensor array by block copolymer lithography
Authors
신동옥정종렬한태희구종민박혜정임용택김상욱
Keywords
block copolymer; plasmonic sensor
Issue Date
2010-09
Publisher
Journal of materials chemistry
Citation
VOL 20, NO 34, 7241-7247
Abstract
Highly uniform and dense, hexagonal noble metal nanoparticle arrays were achieved on large-area transparent glass substrates via scalable, parallel processing of block copolymer lithography. Exploring their localized surface plasmon resonance (LSPR) characteristics revealed that the Ag nanoparticle array displayed a UV-vis absorbance spectrum sufficiently narrow and intense for biosensing application. A highly-sensitive, label-free detection of prostate cancer specific antibody (anti-PSA) with sub-ng ml-1 level detection limit (0.1~1 ng ml-1) has been accomplished with the plasmonic nanostructure. Our approach offers a valuable route to a low-cost, manufacture-scale production of plasmonic nanostructures, potentially useful for various photonic and optoelectronic devices.
URI
http://pubs.kist.re.kr/handle/201004/40617
ISSN
0959-9428
Appears in Collections:
KIST Publication > Article
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