Tungsten Diselenide Nanoparticles Produced via Femtosecond Ablation for SERS and Theranostics Applications
Due to their high refractive index, record optical anisotropy and a set of excitonic transitions in visible range at a room temperature, transition metal dichalcogenides have gained much attention. Here, we adapted a femtosecond laser ablation for the synthesis of WSe<sub>2</sub> nanoparticles (NPs) with diameters from 5 to 150 nm, which conserve the crystalline structure of the original bulk crystal. This method was chosen due to its inherently substrate-additive-free nature and a high output level. The obtained nanoparticles absorb light stronger than the bulk crystal thanks to the local field enhancement, and they have a much higher photothermal conversion than conventional Si nanospheres. The highly mobile colloidal state of produced NPs makes them flexible for further application-dependent manipulations, which we demonstrated by creating substrates for SERS sensors.
Authors
- Alexander Melentev (ORCID: https://orcid.org/0000-0001-7998-9023)
- Andrei V. Kabashin (ORCID: https://orcid.org/0000-0003-1549-7198)
- N.M. Belozerova (ORCID: https://orcid.org/0000-0002-3386-605X)
- Alexey D. Bolshakov (ORCID: https://orcid.org/0000-0001-7223-7232)
- Gleb V. Tikhonowski (ORCID: https://orcid.org/0000-0003-4998-1631)
- Andrei Ushkov (ORCID: https://orcid.org/0000-0001-8962-1599)
- Gleb I. Tselikov (ORCID: https://orcid.org/0000-0002-6664-7881)
- A. I. Chernov (ORCID: https://orcid.org/0000-0002-6492-9068)
- Dmitry I. Yakubovsky (ORCID: https://orcid.org/0000-0003-1350-2416)
- Aleksey V. Arsenin (ORCID: https://orcid.org/0000-0002-7506-4389)
- Valentyn S. Volkov (ORCID: https://orcid.org/0000-0003-2637-1371)
- Anton A. Popov (ORCID: https://orcid.org/0000-0001-8902-0371)
- Ilya V. Martynov (ORCID: https://orcid.org/0000-0003-0811-4072)
- Alexander V. Syuy (ORCID: https://orcid.org/0000-0002-2373-8812)
- Daniil I. Tselikov (ORCID: https://orcid.org/0009-0002-6454-9353)
- Georgy A. Ermolaev (ORCID: https://orcid.org/0000-0002-0895-818X)
- Ivan S. Kazantsev
- Andrey A. Vyshnevyy (ORCID: https://orcid.org/0000-0003-1394-4169)
- Dmitriy Grudinin (ORCID: https://orcid.org/0000-0003-4038-5374)
- Dmitriy Dyubo
Institutions
- Centre National de la Recherche Scientifique (FR)
- St Petersburg University (RU)
- Yerevan State University (AM)
- Aix-Marseille Université (FR)
- Joint Institute for Nuclear Research (RU)
- Institute of Engineering Physics (RU)
- National Research Nuclear University MEPhI (RU)
Publication Details
- Journal
- Nanomaterials
- Published
- 2024-12-24
- DOI
- https://doi.org/10.3390/nano15010004
- Citations
- 8
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.94
Funders
- Ministry of Science and Higher Education of the Russian Federation