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Open AccessArticle

External Field-Controlled Ablation: Magnetic Field

1
Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, John Street., Hawthorn, VIC 3122, Australia
2
Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
3
Melbourne Center for Nanofabrication, Australian National Fabrication Facility, Clayton, VIC 3168, Australia
4
Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1662; https://doi.org/10.3390/nano9121662
Received: 21 October 2019 / Revised: 11 November 2019 / Accepted: 18 November 2019 / Published: 22 November 2019
(This article belongs to the Special Issue Laser Printing of Nanophotonic Structures)
The femtosecond laser ablation of silicon amidst an externally applied magnetic field in different orientations was investigated with respect to the scanning direction and polarisation of the laser beam, by observation of ablation patterns and debris displacement in a range of fluences, magnetic fields strengths, and geometries. Ultra-short 230 fs laser pulses of 1030 nm wavelengths were utilised in the single and multi-pulse irradiation modes. Ablation with an externally applied magnetic B-field B e x t 0.15 T was shown to strongly affect debris formation and deposition. The mechanism of surface plasmon polariton (SPP) wave can explain the ablated periodic patterns observed with alignment along the magnetic field lines. The application potential of external field controlled ablation is discussed. View Full-Text
Keywords: ablation; magnetic field; femtosecond laser fabrication ablation; magnetic field; femtosecond laser fabrication
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MDPI and ACS Style

Maksimovic, J.; Ng, S.H.; Katkus, T.; Cowie, B.C.C.; Juodkazis, S. External Field-Controlled Ablation: Magnetic Field. Nanomaterials 2019, 9, 1662.

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