Details
| Original language | English |
|---|---|
| Article number | 113103 |
| Journal | Applied physics letters |
| Volume | 112 |
| Issue number | 11 |
| Publication status | Published - 12 Mar 2018 |
Abstract
A technique to increase nanosecond laser based production of ferric nanoparticles by elevating temperature of the iron target and controlling its surface exposure to oxygen is reported. High power near-infrared laser ablation of the iron target heated up to 600 °C enhances the particle generation efficiency by more than tenfold exceeding 6 μg/J. Temporal and thermal dependencies of the particle generation process indicate correlation of this enhancement with the oxidative processes that take place on the iron surface during the per spot interpulse delay. Nanoparticles, produced using the heat-assisted ablation technique, are examined using scanning electron and transmission electron microscopy confirming the presence of 1-100 nm nanoparticles with an exponential size distribution that contain multiple randomly oriented magnetite nanocrystallites. The described process enables the application of high power lasers and facilitates precise, uniform, and controllable direct deposition of ferric nanoparticle coatings at the industry-relevant rates.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Applied physics letters, Vol. 112, No. 11, 113103, 12.03.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Thermally assisted nanosecond laser generation of ferric nanoparticles
AU - Kurselis, K.
AU - Kozheshkurt, V.
AU - Kiyan, R.
AU - Chichkov, B.
AU - Sajti, L.
N1 - Funding information: The research was funded by the German Research Foundation (DFG) within the project SFB/TRR123 PlanOS–Planar Optronic Systems. This scientific work has also been supported by the Grant RSF No. 16-13-10528 (in the field of plasma plume and nanoparticle generation studies). V. Kozheshkurt is grateful to German Academic Exchange Service (DAAD) and Federal Ministry of Education and Research (BMBF) for funding his visit to Laser Zentrum Hannover e.V. under the program IP@Leibniz. The authors also thank the Laboratory of Nano and Quantum Engineering (LNQE), Hannover for TEM imagery.
PY - 2018/3/12
Y1 - 2018/3/12
N2 - A technique to increase nanosecond laser based production of ferric nanoparticles by elevating temperature of the iron target and controlling its surface exposure to oxygen is reported. High power near-infrared laser ablation of the iron target heated up to 600 °C enhances the particle generation efficiency by more than tenfold exceeding 6 μg/J. Temporal and thermal dependencies of the particle generation process indicate correlation of this enhancement with the oxidative processes that take place on the iron surface during the per spot interpulse delay. Nanoparticles, produced using the heat-assisted ablation technique, are examined using scanning electron and transmission electron microscopy confirming the presence of 1-100 nm nanoparticles with an exponential size distribution that contain multiple randomly oriented magnetite nanocrystallites. The described process enables the application of high power lasers and facilitates precise, uniform, and controllable direct deposition of ferric nanoparticle coatings at the industry-relevant rates.
AB - A technique to increase nanosecond laser based production of ferric nanoparticles by elevating temperature of the iron target and controlling its surface exposure to oxygen is reported. High power near-infrared laser ablation of the iron target heated up to 600 °C enhances the particle generation efficiency by more than tenfold exceeding 6 μg/J. Temporal and thermal dependencies of the particle generation process indicate correlation of this enhancement with the oxidative processes that take place on the iron surface during the per spot interpulse delay. Nanoparticles, produced using the heat-assisted ablation technique, are examined using scanning electron and transmission electron microscopy confirming the presence of 1-100 nm nanoparticles with an exponential size distribution that contain multiple randomly oriented magnetite nanocrystallites. The described process enables the application of high power lasers and facilitates precise, uniform, and controllable direct deposition of ferric nanoparticle coatings at the industry-relevant rates.
UR - http://www.scopus.com/inward/record.url?scp=85043753968&partnerID=8YFLogxK
U2 - 10.1063/1.5021763
DO - 10.1063/1.5021763
M3 - Article
AN - SCOPUS:85043753968
VL - 112
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 11
M1 - 113103
ER -