Magneto-plasmonic nanoparticles for SERS

Valdas Šablinskas; Agnė Zdaniauskienė; Sonata Adomavičiūtė-Grabusovė; Evaldas Stankevičius; Vita Petrikaitė; Tatjana Charkova; Lina Mikoliūnaite; Romualdas Trusovas; Algirdas Selskis; Gediminas Niaura

doi:10.1117/12.2597199

6 August 2021 Magneto-plasmonic nanoparticles for SERS

Valdas Šablinskas, Agnė Zdaniauskienė, Sonata Adomavičiūtė-Grabusovė, Evaldas Stankevičius, Vita Petrikaitė, Tatjana Charkova, Lina Mikoliūnaite, Romualdas Trusovas, Algirdas Selskis, Gediminas Niaura

Author Affiliations +

Proceedings Volume 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX; 117972B (2021) https://doi.org/10.1117/12.2597199
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Conference Poster

Abstract

The goal of this study is development of ultra-sensitive and reproducible SERS platform based on novel magnetoplasmonic nanoparticles produced by laser ablation. The magnetic part of hybrid nanoparticles ensures manipulation of the nanoparticles by magnetic field by arranging them at biological surfaces in a special geometry resulting in high and reproducible SERS. Magneto-plasmonic Au-Fe nanoparticles in colloidal suspension were prepared by picosecond laser ablation of evaporated iron and gold films on glass. The nanoparticles were characterized by UV-visible extinction, high resolution electronic microscopy, and Raman spectroscopy. EDX analysis revealed that the shell of nanoparticles (2−20 nm) consist of iron and the core is composed mostly of gold. The plasmonic behavior of nanoparticles was accessed by analysis of SERS spectra from adsorbed adenine as probe ligand. The fabrication of hybrid nanoparticles by laser ablation offers a new possibility for construction of SERS substrates with tunable optical and magnetic properties for biomedical sensing.

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Valdas Šablinskas, Agnė Zdaniauskienė, Sonata Adomavičiūtė-Grabusovė, Evaldas Stankevičius, Vita Petrikaitė, Tatjana Charkova, Lina Mikoliūnaite, Romualdas Trusovas, Algirdas Selskis, and Gediminas Niaura "Magneto-plasmonic nanoparticles for SERS", Proc. SPIE 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX, 117972B (6 August 2021); https://doi.org/10.1117/12.2597199

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