A plasmonic biosensor array by block copolymer lithography

Dong Ok Shin, Jong Ryul Jeong, Tae Hee Han, Chong Min Koo, Hye Jeong Park, Yong Taik Lim, Sang Ouk Kim

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)

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 languageEnglish
Pages (from-to)7241-7247
Number of pages7
JournalJournal of Materials Chemistry
Volume20
Issue number34
DOIs
Publication statusPublished - 2010 Sep 14
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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