(PDF) Superwicking Functionality of Femtosecond Laser ...- femtosecond laser-induced periodic surface structures revisited a comparative study on zno ,An advanced superwicking aluminum material based on a microgroove surface structure textured with both laser-induced periodic surface structures and fine microholes was produced by direct femtosecond laser nano/microstructuring technology. ... In our study, this structure is produced using laser fluence of 8.6 J/cm2, step between scanning lines ...Asymmetric femtosecond laser ablation of silicon surface ...The femtosecond laser ablation of silicon surface near the ablation threshold was investigated and the preferential ablation along different directions was observed in different stages. It was found that the ripples formed in the initial stage facilitate the ablation along the direction perpendicular to the ripples, leading to the formation of an elliptical ablation area. With …



Laser-induced periodic surface structures with ultrashort laser …

Nov 01, 2018· Abstract. Abstract. Laser-induced periodic surface structures (LIPSS) have a wide application prospect from sensing to solar power generation and photocatalysis mainly due to its nanoscale features and self-repetitive microscopic patterns. In this review we discuss various complex process of the interaction of ultrafast laser with matter during ...

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Real-time in situ study of femtosecond-laser-induced periodic structures …

Femtosecond-laser surface structuring on metals is investigated in real time by both fundamental and second harmonic generation (SHG) signals. The onset of surface modification and its progress can be monitored by both the fundamental and SHG probes. However, the dynamics of femtosecond-laser-induced periodic surface structures (FLIPSSs) formation …

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Influence of Bulk Temperature on Laser-Induced Periodic Surface Structures ...

Nov 27, 2019· Irradiating a flat surface of a solid with high intensity polarized laser light can lead to the manifestation of Laser-induced Periodic Surface Structures (LIPSS) (a list of abbreviations can be found at the end of the paper), which are nanometer-sized regular grooves [].LIPSS on polymers can be obtained with either nanosecond or picosecond pulsed laser …

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Laser-induced periodic surface structures on titanium upon …

Single- and two-color double-fs-pulse experiments were performed on titanium to study the dynamics of the formation of laser-induced periodic surface structures (LIPSS). A Mach-Zehnder inter-ferometer generated polarization controlled (parallel or cross-polarized) double-pulse sequences in two configurations – either at 800 nm only, or at 400 and 800 nm …

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(PDF) Femtosecond LIPSS on indium-tin-oxide thin films ...

Many of these comparative studies investigated the laser-induced periodic surface structure (LIPSS) generation both experimentally and theoretically. In general, LIPSS formations can be divided into two categories based on their periodicity compared to the laser wavelength.

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OSA | The morphological and optical characteristics of ...

We systematically study the morphological and optical characteristics of the large-area micro/nanostructures produced by femtosecond laser irradiation on GaAs, Si, and brass. The experimental results demonstrate that along with the increase of laser fluence, significant changes in the surface morphology can be observed, and the most prominent phenomenon is …

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Frontiers | High-Performance Birefringence of Periodic ...

Introduction. Femtosecond laser-induced periodic surface structures (LIPSS) have been studied extensively for many types of materials, such as metals, semiconductors, dielectric solids, and thin films [1–14].Owing to its versatility and flexibility, femtosecond LIPSS has become an efficient processing technique for fabricating functional devices, for structural color, absorption …

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Femtosecond laser-induced surface nanostructures for ...

7.1.1. Femtosecond laser-induced periodic surface structures (fs-LIPSS) Since the turn of the new millennium, a remarkable amount of research has been devoted to the formation mechanisms of LIPSS after irradiation by ultrashort laser pulses (see [4–10] and references therein).Typically, two distinct types of LIPSS are observed on irradiation of solids with linearly …

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Generating Nanodot Structures on Stainless-Steel Surfaces ...

ered femtosecond laser induced periodic surface structures on metals. J Appl Phys 108:073523 25. Dufft D, Rosenfeld A, Das SK, Grunwald R, Bonse J(2009) Femtosecond laser-induced periodic surface structures revisited: a comparative study on ZnO. J Appl Phys 105:034908 26. Ling EJYï odusch N, Gauvin R, Servio P, Kietrig AM

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[PDF] Femtosecond laser irradiation of synthetic single crystal …

Oct 01, 2012· This thesis explores the ablation and texturing of synthetic single crystal diamond under ultrashort laser pulse irradiation in rough vacuum ambient conditions. The study has two main themes. First, the production of ordered periodic nanostructures, called ripples, on the diamond surface is characterized and the periodicity of these structures is analyzed against …

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Ultrafast Laser Applications in Manufacturing Processes: A ...

Feb 06, 2020· Abstract. With the invention of chirped pulse amplification for lasers in the mid-1980s, high power ultrafast lasers entered into the world as a disruptive tool, with potential impact on a broad range of application areas. Since then, ultrafast lasers have revolutionized laser–matter interaction and unleashed their potential applications in manufacturing …

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[PDF] Femtosecond laser irradiation of synthetic single crystal …

Oct 01, 2012· This thesis explores the ablation and texturing of synthetic single crystal diamond under ultrashort laser pulse irradiation in rough vacuum ambient conditions. The study has two main themes. First, the production of ordered periodic nanostructures, called ripples, on the diamond surface is characterized and the periodicity of these structures is analyzed against …

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Superwicking Functionality of Femtosecond Laser Textured ...

An advanced superwicking aluminum material based on a microgroove surface structure textured with both laser-induced periodic surface structures and fine microholes was produced by direct femtosecond laser nano/microstructuring technology. The created material demonstrates excellent wicking performance in a temperature range of 23 to 120 °C.

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Femtosecond laser-induced periodic surface structure on fused silica surface ...

Feb 01, 2016· Single and 10-pulse laser-induced surface damage behaviors of fused silica were investigated using a linearly polarized 40-fs Ti: sapphire laser system operating at a central wavelength of 800 nm.After the sample was subjected to single-shot laser irradiation, it displayed a typically damaged crater, and two types of laser-induced periodic surface structures …

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Femtosecond laser-induced periodic surface structures

Jul 16, 2012· The formation of laser-induced periodic surface structures (LIPSS) in different materials (metals, semiconductors, and dielectrics) upon irradiation with linearly polarized fs-laser pulses (τ ∼ 30–150 fs, λ ∼ 800 nm) in air environment is studied experimentally and theoretically. In metals, predominantly low-spatial-frequency-LIPSS with periods close to the laser …

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Asymmetric femtosecond laser ablation of silicon surface ...

The femtosecond laser ablation of silicon surface near the ablation threshold was investigated and the preferential ablation along different directions was observed in different stages. It was found that the ripples formed in the initial stage facilitate the ablation along the direction perpendicular to the ripples, leading to the formation of an elliptical ablation area. With …

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‪Dr. Susanta Kumar Das‬ - ‪Google Scholar‬

Femtosecond laser-induced periodic surface structures revisited: A comparative study on ZnO. D Dufft, A Rosenfeld, SK Das, R Grunwald, J Bonse ... Journal of Applied Physics 105 (3), 034908, 2009. 367: 2009: Formation of laser-induced periodic surface structures on fused silica upon multiple cross-polarized double-femtosecond-laser-pulse ...

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Prospects of target nanostructuring for laser proton ...

Mar 14, 2017· We used laser-induced periodic surface structures generated in-situ as a very fast and economic way to produce nanostructured targets capable of high-repetition rate applications. Both in ...

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Femtosecond laser-induced periodic surface structures: Journal of Laser ...

Jul 16, 2012· The formation of laser-induced periodic surface structures (LIPSS) in different materials (metals, semiconductors, and dielectrics) upon irradiation with linearly polarized fs-laser pulses (τ ∼ 30–150 fs, λ ∼ 800 nm) in air environment is studied experimentally and theoretically. In metals, predominantly low-spatial-frequency-LIPSS with ...

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Growth of high spatial frequency periodic ripple ...

We present experimentally and theoretically the evolution of high spatial frequency periodic ripples (HSFL) fabricated on SiC crystal surfaces by irradiation with femtosecond laser pulses in a vacuum chamber. At early stages the seed defects are mainly induced by laser pulse irradiation, leading to the reduction in the ablation threshold fluence. By observing the …

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Deep-subwavelength ripples on the ZnO surface obtained via …

Jan 30, 2022· 1. Introduction. The laser-induced periodic surface structure (LIPSS) or ripples on the structure of solid materials have motivated extensive research since their first observation in 1965 by Birnbaum .With the rapid development of femtosecond laser-based science and technology, femtosecond laser-induced periodic surface subwavelength ripples have been …

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Laser-induced periodic surface structures: Arbitrary ...

Jun 23, 2020· We demonstrate that the finite-difference time-domain (FDTD) method can be used to study the formation of laser-induced periodic surface structures (LIPSSs) under oblique incidence and arbitrary polarization states. The inhomogeneous energy absorption below a rough surface at oblique incident angle is studied by the FDTD method and compared to the …

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Laser-Induced Periodic Surface Structures— A Scientific ...

Oct 03, 2016· Abstract: Laser-induced periodic surface structures (LIPSS, ripples) are a universal phenomenon and can be generated on almost any material upon irradiation with linearly polarized radiation. With the availability of ultrashort laser pulses, LIPSS have gained an increasing attraction during the past decade, since these structures can be generated in a …

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The effects of femtosecond laser-textured Ti-6Al-4V on …

To study the biological activity effects of femtosecond laser-induced structures on cell behavior, TA6V samples were micro-textured with focused femtosecond laser pulses generating grooves of various dimensions on the micrometer scale (width: 25-75μm; depth: 1-10μm). LIPSS (Laser Induced Periodic Su …

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