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Article Dans Une Revue Journal of Materials Chemistry C Année : 2023

Tunable optical properties of transition metal dichalcogenide nanoparticles synthesized by femtosecond laser ablation and fragmentation

Kirill S Khorkov

Résumé

Manipulation of resonant dielectric nanostructures is of paramount importance for next-generation photonic devices. Traditionally, researchers use two-dimensional or phase-change materials for this purpose. However, the former leads to small efficiency, while the latter lacks continuous changes. Here, we provide an alternative approach through laser-induced modification. Specifically, via a laser ablation process we synthesized molybdenum disulfide (MoS 2) nanoparticles (NPs), the composition of which we then controlled through laser fragmentation. It causes a transformation of MoS 2 into its oxide MoO 3Àx , which, in turn, results in pronounced modification of the optical response, owing to a large difference between their optical constants. In addition, laser-fragmented NPs have a several times larger photothermal response, compared to the original MoS 2 and classical silicon NPs. Thus, our MoS 2-based laser-tunable NPs open up a new perspective for resonant nanophotonics, in particular, photothermal therapy.
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Dates et versions

hal-04305494 , version 1 (12-04-2024)

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Anton S Chernikov, Gleb I Tselikov, Mikhail Yu Gubin, Alexander V Shesterikov, Kirill S Khorkov, et al.. Tunable optical properties of transition metal dichalcogenide nanoparticles synthesized by femtosecond laser ablation and fragmentation. Journal of Materials Chemistry C, 2023, 11, pp.3493 - 3503. ⟨10.1039/d2tc05235k⟩. ⟨hal-04305494⟩

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