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Micromachines
Volume 12
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10.3390/mi12050583
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Article

Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond

by
Ahmed Abdelmalek
1,
Argyro N. Giakoumaki
2,3,
Vibhav Bharadwaj
2,3,*,
Belén Sotillo
4,
Thien Le Phu
2,3,
Monica Bollani
3,
Zeyneb Bedrane
1,
Roberta Ramponi
2,3,
Shane M. Eaton
3 and
Malik Maaza
5,6
1
Physics Department, Theoretical Physics Laboratory, Tlemcen University, Tlemcen 13000, Algeria
2
Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
3
Institute for Photonics and Nanotechnologies—CNR-IFN, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
4
Materials Physics Department, Faculty of Physics, Complutense University of Madrid, 28040 Madrid, Spain
5
UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk Ridge, P.O. Box 392, Pretoria 0001, South Africa
6
Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, P.O. Box 722, Somerset West, Western Cape 7129, South Africa
*
Author to whom correspondence should be addressed.
Micromachines 2021, 12(5), 583; https://doi.org/10.3390/mi12050583
Submission received: 15 April 2021 / Revised: 10 May 2021 / Accepted: 15 May 2021 / Published: 20 May 2021
(This article belongs to the Special Issue Femtosecond Laser Micromachining for Photonics Applications, Volume II)
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Abstract

High spatial frequency laser induced periodic surface structure (HSFL) morphology induced by femtosecond laser with 230 fs pulse duration, 250 kHz repetition rate at 1030 nm wavelength on CVD diamond surface is investigated and discussed. The spatial modification was characterized and analyzed by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and 2D-Fast Fourier Transform (2D-FFT). We studied the effect of pulse number and laser power on the spatial development of nanostructures, and also deduced the impact of thermal accumulation effect on their morphology. A generalized plasmonic model has been used to follow the optical evolution of the irradiated surface and to determine the periodic value of the nanostructures. We suggest that non-thermal melting and plasmonic excitation are the main processes responsible for the formation of HSFL-type nanostructures.
Keywords: femtosecond laser; LIPSS morphology; 2D-FFT; plasmonic excitation femtosecond laser; LIPSS morphology; 2D-FFT; plasmonic excitation

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MDPI and ACS Style

Abdelmalek, A.; Giakoumaki, A.N.; Bharadwaj, V.; Sotillo, B.; Le Phu, T.; Bollani, M.; Bedrane, Z.; Ramponi, R.; Eaton, S.M.; Maaza, M. Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond. Micromachines 2021, 12, 583. https://doi.org/10.3390/mi12050583

AMA Style

Abdelmalek A, Giakoumaki AN, Bharadwaj V, Sotillo B, Le Phu T, Bollani M, Bedrane Z, Ramponi R, Eaton SM, Maaza M. Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond. Micromachines. 2021; 12(5):583. https://doi.org/10.3390/mi12050583

Chicago/Turabian Style

Abdelmalek, Ahmed, Argyro N. Giakoumaki, Vibhav Bharadwaj, Belén Sotillo, Thien Le Phu, Monica Bollani, Zeyneb Bedrane, Roberta Ramponi, Shane M. Eaton, and Malik Maaza. 2021. "Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond" Micromachines 12, no. 5: 583. https://doi.org/10.3390/mi12050583

APA Style

Abdelmalek, A., Giakoumaki, A. N., Bharadwaj, V., Sotillo, B., Le Phu, T., Bollani, M., Bedrane, Z., Ramponi, R., Eaton, S. M., & Maaza, M. (2021). Morphological Study of Nanostructures Induced by Direct Femtosecond Laser Ablation on Diamond. Micromachines, 12(5), 583. https://doi.org/10.3390/mi12050583

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