Sputtering and redeposition of ion irradiated Au nanoparticle arrays : direct comparison of simulations to experiments

Visa fullständig post



Permalänk

http://hdl.handle.net/10138/178863

Citation

Holland-Moritz , H , Ilinov , A , Djurabekova , F , Nordlund , K & Ronning , C 2017 , ' Sputtering and redeposition of ion irradiated Au nanoparticle arrays : direct comparison of simulations to experiments ' , New Journal of Physics , vol. 19 , 013023 . https://doi.org/10.1088/1367-2630/aa56eb

Titel: Sputtering and redeposition of ion irradiated Au nanoparticle arrays : direct comparison of simulations to experiments
Författare: Holland-Moritz, Henry; Ilinov, Andrey; Djurabekova, Flyura; Nordlund, Kai; Ronning, Carsten
Upphovmannens organisation: Department of Physics
Datum: 2017-01-20
Språk: eng
Sidantal: 11
Tillhör serie: New Journal of Physics
ISSN: 1367-2630
DOI: https://doi.org/10.1088/1367-2630/aa56eb
Permanenta länken (URI): http://hdl.handle.net/10138/178863
Abstrakt: Ion beam processing of surfaces is well known to lead to sputtering, which conventionally is associated only with erosion of atoms from the material. We show here, by combination of experiments and a newly developed Monte Carlo algorithm, that in the case of nanoparticles in a regular two-dimensional array on surfaces, the redeposition of sputtered atoms may play a significant role on the system development. The simulations are directly compared to in situ experiments obtained using a dual focused Ga+ ion beam system and high resolution scanning electron microscopy, and explain the size evolution by a combination of sputtering and redeposition of sputtered material on neighboring particles. The effect is found to be dependent on the size of the nanoparticles: if the nanoparticle size is comparable to the ion range, the reposition is negligible. For larger nanoparticles the redeposition becomes significant and is able to compensate up to 20% of the sputtered material, effectively reducing the process of sputtering. The redeposition may even lead to significant growth: this was seen for the nanoparticles with the sizes much smaller than the ion range. Furthermore, the algorithm shows that significant redeposition is possible when the large size neighboring nanoparticles are present.
Subject: sputtering
redeposition
ion beam modification
nanoparticles
BEAM EROSION
MONTE-CARLO
NANOSTRUCTURES
FILMS
CODE
114 Physical sciences
Referentgranskad: Ja
Licens: cc_by
Användningsbegränsning: openAccess
Parallelpublicerad version: publishedVersion


Filer under denna titel

Totalt antal nerladdningar: Laddar...

Filer Storlek Format Granska
Holland_Moritz_2017_New_J._Phys._19_013023.pdf 2.363Mb PDF Granska/Öppna

Detta dokument registreras i samling:

Visa fullständig post