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Facile laser synthesis of multimodal composite silicon/gold nanoparticles with variable chemical composition

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Abstract

Multimodal contamination-free composite silicon/gold nanoparticles are synthesized by “green” laser ablation approach. Their concentration-dependent size distribution and chemical composition are studied by means of transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy. The influence of applied laser fluence on both size distribution and chemical composition is also investigated. The size-dependent chemical composition of formed nanocomposites is analyzed. Optoelectronic properties of silicon/gold nanoparticles as well as their ability to molecule detection using surface-enhanced Raman scattering are studied as well.

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Acknowledgments

This research work was financially supported from the Excellence Initiative of the German Research Foundation of Free University, Berlin (0503121810), from the European Regional Development Fund and the state budget of the Czech Republic (Project BIATRI: CZ.02.1.01/0.0/0.0/15_003/0000445), from the Ministry of Education, Youth and Sports (Programs NPU I-Project no. LO1602) and from the COST project (ECOST-STSM-BM1205-120416-072252). The author also thanks Prof. J. Behrends for performing experiments; Prof. M. Štěpánek and A. Murmiliuk for kind assistance with DLS and Z-potential measurements; and Dr. Al. Popov, Dr. M. Kögler, Dr. S. Uusitalo, and Dr. A. Kabashin for helpful discussions.

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Correspondence to Yury V. Ryabchikov.

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Ryabchikov, Y.V. Facile laser synthesis of multimodal composite silicon/gold nanoparticles with variable chemical composition. J Nanopart Res 21, 85 (2019). https://doi.org/10.1007/s11051-019-4523-4

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  • DOI: https://doi.org/10.1007/s11051-019-4523-4

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