Environmentally friendly improvement of plasmonic nanostructure functionality towards magnetic resonance applications

Authors

M. Flimelová, Y. V. Ryabchikov, J. Behrends, N. M. Bulgakova

Laboratory / Department
Scientific Laser Applications
Citation
Nanomaterials 2023, 13(4), 764
DOI
10.3390/nano13040764
Year
2023

The application performance of single-element nanoparticles (NPs) can be substantially improved by synthesizing multi-element nanostructures. 

However, merging semiconductor and metallic features in nanosized objects still represents a challenge. This research explores the formation of gold-silicon composite NPs with novel modalities by ultrashort laser ablation of gold in water containing silicon NPs. It considers the formation of NPs not only in cavitation bubbles but also outside of it taking into account the complexity of the system silicon/gold/oxygen/water.

Left: Dependence of the chemical composition of AuSiNPs on the concentration of Si NPs in water (a). Size distributions of bare Au and hybris AuSi NPs (b). Right: Optoelectronic properties of Au-based NPs: absorbance (a) and Electron Paramagnetic Resonance (b) spectra.
Left: Dependence of the chemical composition of AuSiNPs on the concentration of Si NPs in water (a). Size distributions of bare Au and hybris AuSi NPs (b). Right: Optoelectronic properties of Au-based NPs: absorbance (a) and Electron Paramagnetic Resonance (b) spectra.