The disappearance and return of nanoparticles upon low energy ion irradiation

Choupanian S, Nagel A, Moeller W, Pacholski C, Ronning C (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Nanotechnology Institute of Physics: Hybrid Open Access

Book Volume: 33

Article Number: 035703

Journal Issue: 3

DOI: 10.1088/1361-6528/ac2dc3

Abstract

Ion irradiation of bulk and thin film materials is tightly connected to well described effects such as sputtering or/and ion beam mixing. However, when a nanoparticle is ion irradiated and the ion range is comparable to the nanoparticle size, these effects are to be reconsidered essentially. This study investigates the morphology changes of silver nanoparticles on top of silicon substrates, being irradiated with Ga+ ions in an energy range from 1 to 30 keV. The hemispherical shaped nanoparticles become conical due to an enhanced and curvature-dependent sputtering, before they finally disappear. The sputter yield and morphology changes can be well described by 3D Monte Carlo TRI3DYN simulations. However, the combination of sputtering, ion beam mixing, ion beam induced diffusion, and Ostwald ripening at ion energies lower than 8 keV results in the reappearance of new particles. These newly formed nanoparticles appear in various structures depending on the material and ion energy.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Universität Potsdam DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Choupanian, S., Nagel, A., Moeller, W., Pacholski, C., & Ronning, C. (2022). The disappearance and return of nanoparticles upon low energy ion irradiation. Nanotechnology, 33(3). https://doi.org/10.1088/1361-6528/ac2dc3

MLA:

Choupanian, Shiva, et al. "The disappearance and return of nanoparticles upon low energy ion irradiation." Nanotechnology 33.3 (2022).

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