A plasmonic biosensor array by block copolymer lithography
- A plasmonic biosensor array by block copolymer lithography
- 신동옥; 정종렬; 한태희; 구종민; 박혜정; 임용택; 김상욱
- block copolymer; plasmonic sensor
- Issue Date
- Journal of materials chemistry
- VOL 20, NO 34, 7241-7247
- 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.
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