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

En-Chiang Lin; Jun Fang; Se-Chul Park; Thomas Stauden; Joerg Pezoldt; Heiko O Jacobs

doi:10.1002/adma.201300472

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

Adv Mater. 2013 Jul 12;25(26):3554-9. doi: 10.1002/adma.201300472. Epub 2013 May 31.

Authors

En-Chiang Lin¹, Jun Fang, Se-Chul Park, Thomas Stauden, Joerg Pezoldt, Heiko O Jacobs

Affiliation

¹ University of Minnesota, Electrical and Computer Engineering, Rm. 4-178, 200 Union St. SE, Minneapolis, MN 55455, USA.

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.

Keywords: electrodynamic precipitation; hybrid molecular arrays; nanolenses; surface patterning; surface-enhanced Raman spectroscopy (SERS).

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.