Structural Analysis of Nanoparticles Formed via Laser Ablation of Porous Silicon and Silicon Microparticles in Water


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Abstract

Silicon nanoparticles with sizes of 50–300 nm have been formed via picosecond laser ablation of porous silicon and silicon microparticles in water using various targets. Raman spectroscopy has revealed the presence of a low amount of the amorphous phase in the obtained particles (10–12%) prepared from micro- and mesoporous silicon layers and almost a zero degree of crystallinity in the case of laser fragmentation of silicon micropowders in water. The results are promising for further application of the nanoparticles in photonics and biomedicine.

About the authors

S. V. Zabotnov

Department of Physics, Moscow State University; Moscow Physicotechnical Institute, Institute of Nano-, Bio-, Information,
Cognitive and Social Sciences and Technologies, Moscow Institute of Physics and Technology (National Research University); National Research Centre Kurchatov Institute

Author for correspondence.
Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 123098; Moscow, 123182

A. V. Kolchin

Department of Physics, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991

F. V. Kashaev

Department of Physics, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991

A. V. Skobelkina

Department of Physics, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991

V. Yu. Nesterov

Department of Physics, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991

D. E. Presnov

Department of Physics, Moscow State University; Skobeltsyn Research Institute of Nuclear Physics, Moscow State University; Center of Quantum Technologies, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991; Moscow, 119991

L. A. Golovan

Department of Physics, Moscow State University

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991

P. K. Kashkarov

Department of Physics, Moscow State University; Moscow Physicotechnical Institute, Institute of Nano-, Bio-, Information,
Cognitive and Social Sciences and Technologies, Moscow Institute of Physics and Technology (National Research University); National Research Centre Kurchatov Institute

Email: zabotnov@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 123098; Moscow, 123182


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