Reusable Localized Surface Plasmon Sensors Based on Ultrastable Nanostructures

Nicolas Vogel, Mathieu Jung, Noelia Bocchio, Markus Retsch, Maximilian Kreiter, Ingo Koper

    Research output: Contribution to journalArticle

    49 Citations (Scopus)

    Abstract

    Nanoparticle arrays created by nanosphere lithography are widely used in sensing applications since their localized surface plasmon resonances are extremely sensitive to changes in the local dielectric environment. A major drawback for any biologically oriented sensing application of conventionally produced particle arrays is the lack of stability of the nanoparticles in aqueous media and buffer solutions. Here, a robust and reusable nanoscale sensing platform based on localized surface plasmon resonances of gold nanoparticles embedded in a silicon dioxide matrix is presented. The architecture exhibits extremely high stability in aqueous environments and can be regenerated several times by simple mechanical cleaning of the surface. The platforms surface is ultraflat by design, thus making it an ideal substrate for any bio-oriented sensing application.

    Original languageEnglish
    Pages (from-to)104-109
    Number of pages6
    JournalSmall
    Volume6
    Issue number1
    DOIs
    Publication statusPublished - 4 Jan 2010

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