Effective collection and detection of airborne species using SERS-based detection and localized electrodynamic precipitation.

Lin, En-Chiang; Fang, Jun; Park, Se-Chul; Stauden, Thomas; Pezoldt, Joerg; Jacobs, Heiko O · Adv Mater · 2013

basic_science · Level V

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Abstract

Three different delivery concepts (standard diffusion, global electrodynamic precipitation, and localized nanolens-based precipitation) and three different SERS enhancement layers (a silver film, a nanolens-based localized silver nanoparticle film, and the standard AgFON) are compared. The nanolens concept is applied to increase the SERS signal: a factor of 633, when compared to a standard mechanism of diffusion, is observed.