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Transition metal dichalcogenide nanospheres for high-refractive-index nanophotonics and biomedical theranostics

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dc.contributor.authorTselikov, G. I.
dc.contributor.authorErmolaev, G. A.
dc.contributor.authorPopov, A. A.
dc.contributor.authorTikhonowski, G. V.
dc.contributor.authorKlimentov, S. M.
dc.contributor.authorПопов, Антон Александрович
dc.contributor.authorТихоновский, Глеб Валерьевич
dc.contributor.authorКлиментов, Сергей Михайлович
dc.date.accessioned2024-12-25T08:53:10Z
dc.date.available2024-12-25T08:53:10Z
dc.date.issued2022
dc.description.abstractRecent developments in the area of resonant dielectric nanostructures have created attractive opportunities for concentrating and manipulating light at the nanoscale and the establishment of the new exciting field of all-dielectric nanophotonics. Transition metal dichalcogenides (TMDCs) with nanopatterned surfaces are especially promising for these tasks. Still, the fabrication of these structures requires sophisticated lithographic processes, drastically complicating application prospects. To bridge this gap and broaden the application scope of TMDC nanomaterials, we report here femtosecond laser-ablative fabrication of water-dispersed spherical TMDC (MoS 2 and WS 2 ) nanoparticles (NPs) of variable size (5 to 250 nm). Such NPs demonstrate exciting optical and electronic properties inherited from TMDC crystals, due to preserved crystalline structure, which offers a unique combination of pronounced excitonic response and high refractive index value, making possible a strong concentration of electromagnetic field in the NPs. Furthermore, such NPs offer additional tunability due to hybridization between the Mie and excitonic resonances. Such properties bring to life a number of nontrivial effects, including enhanced photoabsorption and photothermal conversion. As an illustration, we demonstrate that the NPs exhibit a very strong photothermal response, much exceeding that of conventional dielectric nanoresonators based on Si. Being in a mobile colloidal state and exhibiting superior optical properties compared to other dielectric resonant structures, the synthesized TMDC NPs offer opportunities for the development of next-generation nanophotonic and nanotheranostic platforms, including photothermal therapy and multimodal bioimaging.
dc.identifier.citationTransition metal dichalcogenide nanospheres for high-refractive-index nanophotonics and biomedical theranostics / Tselikov, G.I. [et al.] // Proceedings of the National Academy of Sciences of the United States of America. - 2022. - 119. - № 39. - 10.1073/pnas.2208830119
dc.identifier.doi10.1073/pnas.2208830119
dc.identifier.urihttps://www.doi.org/10.1073/pnas.2208830119
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85139311015&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/27474
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of America
dc.titleTransition metal dichalcogenide nanospheres for high-refractive-index nanophotonics and biomedical theranostics
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue39
oaire.citation.volume119
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