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Proceedings Paper

Fabrication of Au nanostructures by pulsed laser deposition in air
Author(s): Rumen G. Nikov; Anna Og. Dikovska; Nikolay N. Nedyalkov; Petar A. Atanasov
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Paper Abstract

Results on fabrication of Au nanostructures by laser ablation in open air are presented. The ablation of the Au target is performed in air environment by nanosecond laser pulses delivered by Nd:YAG laser system operated at λ = 355 nm. Due to the high density of the ambient atmosphere, the intensive collisions of the plume spices result in formation of nanoparticles and aggregates by condensation close to the target. The produced nanoagregates are deposited on a quartz substrate where grow in a specific nanostructure. Diagnostics of the laser-generated plasma for the laser fluences used in this study is performed. Study based on change of ambient conditions shows that the increase of the air pressure from 10 Torr to atmospheric one leads to transition from thin film to porous structures. It is found that the surface morphology of the structures produced by pulsed laser deposition (PLD) in open air strongly depends on the substrate-target distance. The electrical properties of the obtained structures are studied by measurement of their electrical resistance. It is found that the conductivity of the structures strongly depends on their morphology. The fabricated structures have potential for application in the field of electronics and sensors.

Paper Details

Date Published: 5 January 2017
PDF: 7 pages
Proc. SPIE 10226, 19th International Conference and School on Quantum Electronics: Laser Physics and Applications, 102260F (5 January 2017); doi: 10.1117/12.2262274
Show Author Affiliations
Rumen G. Nikov, Institute of Electronics (Bulgaria)
Anna Og. Dikovska, Institute of Electronics (Bulgaria)
Nikolay N. Nedyalkov, Institute of Electronics (Bulgaria)
Petar A. Atanasov, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 10226:
19th International Conference and School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Albena Daskalova; Alexandros Serafetinides, Editor(s)

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