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Selective surface-enhanced Raman scattering in a bulk nanoplasmonic Bi~2~O~3~-Ag eutectic composite by Kamil Szlachetko; Piotr Piotrowski; Katarzyna Sadecka; Paweł Osewski; Dobrosława Kasprowicz; Dorota A. Pawlak is a Engineering article available to read on EtoBox.

What is Selective surface-enhanced Raman scattering in a bulk nanoplasmonic Bi~2~O~3~-Ag eutectic composite about?

A recent surge of interest in surface-enhanced Raman scattering (SERS) has stimulated the search for new systems that can be utilized to fabricate high-performance optical devices. However, the two-dimensional design of the vast majority of SERS-based assemblies has significantly hindered their real-life applicability, motivating the development of three-dimensional volumetric materials. Here, we report selective SERS observed in a volumetric Bi 2 O 3 -Ag eutectic composite obtained by the micro-pullingdown method utilizing directional solidification of eutectics. The enhancement of the Raman signal originates from the localized surface plasmon resonance, LSPR, resulting from silver nanoparticles embedded in the composite. The plasmonic origin of the enhancement is confirmed by characteristic features, such as (i) an enhancement magnitude >10 3 , (ii) the correspondence between the Raman bands' intensity upon excitation by different wavelengths and the localized surface plasmon resonance (LSPR) intensity, and (iii) the occurrence of overtones, which are absent in the as-grown material that does not exhibit LSPR. The examined Bi 2 O 3 -Ag eutectic-based composite is obtained by dire

Who reads Selective surface-enhanced Raman scattering in a bulk nanoplasmonic Bi~2~O~3~-Ag eutectic composite?

Author

Kamil Szlachetko; Piotr Piotrowski; Katarzyna Sadecka; Paweł Osewski; Dobrosława Kasprowicz; Dorota A. Pawlak

Publisher

Walter de Gruyter GmbH

Published

2020

Language

EN

Field

Engineering (Physical Sciences)