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 journalArticle

70 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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  • Cite this

    Shin, D. O., Jeong, J. R., Han, T. H., Koo, C. M., Park, H. J., Lim, Y. T., & Kim, S. O. (2010). A plasmonic biosensor array by block copolymer lithography. Journal of Materials Chemistry, 20(34), 7241-7247. https://doi.org/10.1039/c0jm01319f