Multi-modal laser-fabricated nanocomposites with non-invasive tracking modality and tuned plasmonic properties

0575775 - FZÚ 2024 RIV CH eng J - Journal Article
Ryabchikov, Yury V.
Multi-modal laser-fabricated nanocomposites with non-invasive tracking modality and tuned plasmonic properties.
Crystals. Roč. 13, Sep (2023), č. článku 1381. ISSN 2073-4352. E-ISSN 2073-4352
R&D Projects: GA MŠMT EF15_003/0000445
EU Projects: European Commission(XE) 897231 - LADENTHER
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institutional support: RVO:68378271
Keywords : silicon nanoparticles * gold nanoparticles * composite nanoparticles * nanocomposites * laser ablation * pulsed laser ablation in liquids * plasmonic nanomaterials
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.7, year: 2022
Method of publishing: Open access

Ultrapure composite nanostructures combining semiconductor and metallic elements as a result of ultrafast laser processing are important materials for applications in fields where high chemical purity is a crucial point. Such nanocrystals have already demonstrated prospects in plasmonic biosensing by detecting different analytes like dyes and bacteria.However, the structure of the nanocomposites, as well as the control of their properties, are still very challenging due to the significant lack of research in this area. In this paper, the synthesis of silicon–gold nanoparticles was performed using various approaches such as the direct ablation of (i) a gold target immersed in a colloidal solution of silicon nanoparticles and (ii) a silicon wafer immersed in a colloidal solution of plasmonic nanoparticles. The formed nanostructures combine both plasmonic (gold) and paramagnetic (silicon) modalities observed by absorbance and electron paramagnetic resonance spectroscopies, respectively.
Permanent Link: https://hdl.handle.net/11104/0345500