Silver nanoislands based SERS-active substrates for DNAs detection

Hyerin Song; Seunghun Lee; Taeyoung Kang; Kyujung Kim

doi:10.1117/12.2079003

11 March 2015 Silver nanoislands based SERS-active substrates for DNAs detection

Hyerin Song, Seunghun Lee, Taeyoung Kang, Kyujung Kim

Proceedings Volume 9340, Plasmonics in Biology and Medicine XII; 93400Y (2015) https://doi.org/10.1117/12.2079003
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

Surface enhanced Raman spectroscopy (SERS) based on plasmonic colocalization between DNA attached gold nanoparticles and silver nanoislands substrates. Raman spectra measured on a silver nanoislands substrate were observed 20 and 1.8 folds signal enhancements relative to them on a film substrate with high and low numerical apertures of lenses, respectively. By comparison between calculations and experiments results, we proved that distinct differences of the signal enhancements came from changing field of view on random nanoislands substrate. Consequently, we show that nanoislands substrates with a precise position control can be a good candidate for a SERS substrate which can achieve significant signal enhancements without a complicated lithographic process.

Citation Download Citation

Hyerin Song, Seunghun Lee, Taeyoung Kang, and Kyujung Kim "Silver nanoislands based SERS-active substrates for DNAs detection", Proc. SPIE 9340, Plasmonics in Biology and Medicine XII, 93400Y (11 March 2015); https://doi.org/10.1117/12.2079003

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