Golden Vaterite as a Mesoscopic Metamaterial for Biophotonic Applications

Roman E. Noskov*, Andrey Machnev, Ivan I. Shishkin, Marina V. Novoselova, Alexey V. Gayer, Alexander A. Ezhov, Evgeny A. Shirshin, Sergei V. German, Ivan D. Rukhlenko, Simon Fleming, Boris N. Khlebtsov, Dmitry A. Gorin, Pavel Ginzburg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Mesoscopic photonic systems with tailored optical responses have great potential to open new frontiers in implantable biomedical devices. However, biocompatibility is typically a problem, as engineering of optical properties often calls for using toxic compounds and chemicals, unsuitable for in vivo applications. Here, a unique approach to biofriendly delivery of optical resonances is demonstrated. It is shown that the controllable infusion of gold nanoseeds into polycrystalline sub-micrometer vaterite spherulites gives rise to a variety of electric and magnetic Mie resonances, producing a tuneable mesoscopic optical metamaterial. The 3D reconstruction of the spherulites demonstrates the capability of controllable gold loading with volumetric filling factors exceeding 28%. Owing to the biocompatibility of the constitutive elements, “golden vaterite” paves the way to introduce designer-made Mie resonances to cutting-edge biophotonic applications. This concept is exemplified by showing efficient laser heating of gold-filled vaterite spherulites at red and near-infrared wavelengths, highly desirable in photothermal therapy, and photoacoustic tomography.

Original languageEnglish
Article number2008484
JournalAdvanced Materials
Volume33
Issue number25
DOIs
StatePublished - 24 Jun 2021

Funding

FundersFunder number
Educational School of Lomonosov Moscow State University
Horizon 2020 Framework Programme802279
Horizon 2020 Framework Programme
Naomi Foundation
European Research Council
Ministry of Science, Technology and Space79518
Ministry of Science, Technology and Space
Russian Foundation for Basic Research18‐29‐08046
Russian Foundation for Basic Research
Tel Aviv University
Russian Science Foundation20‐45‐08004, 19‐13‐00332
Russian Science Foundation
PAZY Foundation01021248
PAZY Foundation

    Keywords

    • 3D reconstruction
    • Mie resonances
    • composite nanostructures
    • photoheating
    • spherulites

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