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.
Original language | English |
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Pages (from-to) | 7241-7247 |
Number of pages | 7 |
Journal | Journal of Materials Chemistry |
Volume | 20 |
Issue number | 34 |
DOIs | |
Publication status | Published - 2010 Sep 14 |
Externally published | Yes |
ASJC Scopus subject areas
- Chemistry(all)
- Materials Chemistry