Tungsten Diselenide Nanoparticles Produced via Femtosecond Ablation for SERS and Theranostics Applications

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> nanopar...

Full description

Saved in:
Bibliographic Details
Main Authors: Andrei Ushkov, Dmitriy Dyubo, Nadezhda Belozerova, Ivan Kazantsev, Dmitry Yakubovsky, Alexander Syuy, Gleb V. Tikhonowski, Daniil Tselikov, Ilya Martynov, Georgy Ermolaev, Dmitriy Grudinin, Alexander Melentev, Anton A. Popov, Alexander Chernov, Alexey D. Bolshakov, Andrey A. Vyshnevyy, Aleksey Arsenin, Andrei V. Kabashin, Gleb I. Tselikov, Valentyn Volkov
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Nanomaterials
Subjects:
tungsten diselenide
laser ablation
nanoparicles
optical scattering
photoheating
SERS
Online Access:https://www.mdpi.com/2079-4991/15/1/4
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2079-4991

Similar Items